2,024 water companies registered with the Colorado Secretary of State and 129 special water districts on file with the Department of Local Affairs, with their standing and home city.
| Company | Standing | City | Since |
|---|---|---|---|
| "C" DITCH COMPANY | Good Standing | Crawford | 2010 |
| 113 Grand Canal LLC | Good Standing | Centennial | 2024 |
| 11819 E. Canal Drive, LLC | Good Standing | Denver | 2024 |
| 11857 e canal dr llc | Good Standing | Aurora | 2026 |
| 14-114 WATER USERS ASSOCIATION | Good Standing | Grand Junction | 2002 |
| 1480 W. Canal Ct., LLC | Delinquent | Littleton | 2022 |
| 1510 West Canal, LLC | Delinquent | Lodi | 2008 |
| 1631 W Canal Circle 827 LLC | Voluntarily Dissolved | Somersworth | 2020 |
| 1632 West Canal Circle 935, LLC | Good Standing | Highlands Ranch | 2021 |
| 1661 Canal LLC | Voluntarily Dissolved | Littleton | 2017 |
| 1671 West Canal Circle LLC | Good Standing | Littleton | 2021 |
| 1672 W Canal 411 LLC | Delinquent | Highlands Ranch | 2019 |
| 1672 W. Canal Circle #421, LLC | Good Standing | Littleton | 2026 |
| 1672 W. Canal Circle #427, LLC | Good Standing | Littleton | 2026 |
| 1672 W. Canal Circle #428, LLC | Good Standing | Littleton | 2026 |
| 1691 W. Canal Circle #1127, LLC | Good Standing | Littleton | 2026 |
| 1692 Canal LLC | Good Standing | Centennial | 2012 |
| 1692 West Canal, LLC | Good Standing | Aurora | 2019 |
| 1900 Road Irrigators Lateral Ditch Company | Delinquent | Delta | 2012 |
| 20 Canal Street LLC | Good Standing | Greeley | 2022 |
| 20/20 RESERVOIR RESOURCES, INC. | Voluntarily Dissolved | Denver | 2000 |
| 25957 CANAL ROAD, LLC | Voluntarily Dissolved | Denver | 2023 |
| 2River Reservoir Company LLC | Delinquent | Brighton | 2018 |
| 3050 Lake Canal, LLC | Good Standing | Fort Collins | 2024 |
| 3665 CANAL DRIVE OFFICE PARK ASSOCIATION | Good Standing | Windsor | 1996 |
| 3665 CANAL DRIVE, LLC | Good Standing | Windsor | 2001 |
| 3800 Canal Drive, LLC | Good Standing | Fort Collins | 2017 |
| 3824 Canal, LLC | Voluntarily Dissolved | Fort Collins | 2015 |
| 555 Lateral Company | Delinquent | Gill | 2020 |
| ABRAMS LATERAL DITCH COMPANY | Exists | 1926 | |
| Ace Collateral Inspections, Inc. | Delinquent | Denver | 2007 |
| ACME DITCH COMPANY | Exists | 1911 | |
| ADAMS-PHILLIPS DITCH NONPROFIT CORPORATION | Good Standing | Canon City | 2000 |
| ADOBE CREEK CANAL AND RESERVOIR COMPANY | Exists | 1890 | |
| Adobe Creek Falls Irrigation Company | Delinquent | Fruita | 2005 |
| Advance Reservoir Solutions | Voluntarily Dissolved | Englewood | 2008 |
| ADVANCED COLLATERAL SOLUTIONS, LLC, Colorado Authority Relinquished September 24, 2010 | Withdrawn | Minnetonka | 2002 |
| AGITATOR DITCH COMPANY | Good Standing | Longmont | 1909 |
| ALAMO DITCH COMPANY | Exists | 1901 | |
| Alexander Canales, LLC | Delinquent | Aurora | 2017 |
| ALEXANDER DITCH COMPANY, INC. | Good Standing | Fruita | 1982 |
| ALEXANDER GEORGE MIDDLEDITCH LLC | Voluntarily Dissolved | Denver | 2022 |
| ALEXIS ARBANEY DITCH COMPANY | Good Standing | Basalt | 2000 |
| ALFALFA DITCH COMPANY | Exists | 1884 | |
| ALKALI DITCH NO. 2 INC. | Good Standing | Littleton | 2003 |
| ALKALI NO. 1 DITCH COMPANY | Exists | 1950 | |
| ALLEN AND RENO PARK LATERAL DITCH COMPANY | Exists | 1920 | |
| ALLEN BASIN RESERVOIR COMPANY, INC. | Good Standing | Yampa | 1956 |
| ALLEN DITCH COMPANY | Good Standing | Westminster | 1923 |
| ALLEN MESA DITCH AND RESERVOIR COMPANY | Exists | 1907 | |
| Alpine Acres Water Users Group | Good Standing | Grand Junction | 2005 |
| ALPINE LAKES DITCH AND RESERVOIR COMPANY, INC. | Good Standing | Pagosa Springs | 1995 |
| ALS Reservoir Laboratories LLC | Good Standing | Houston | 2015 |
| ALTONA WATER USERS ASSOCIATION | Exists | 1961 | |
| AmericanaLuxe, LLC | Delinquent | Centennial | 2014 |
| Amyotrophic Lateral Sclerosis Association | Good Standing | Arlington | 2017 |
| ANACONDA DITCH CO., INCORPORATED | Delinquent | South Fork | 1984 |
| ANDERSON DITCH COMPANY | Good Standing | Denver | 1996 |
| ANDREWS-FARWELL DITCH AND RESERVOIR COMPANY | Exists | 1920 | |
| ANDREWS-FARWELL DITCH COMPANY | Administratively Dissolved | Boulder | 1898 |
| ANIMAS CONSOLIDATED DITCH COMPANY | Good Standing | Durango | 1899 |
| ANIMAS RIVER WATER USERS, INC. | Exists | 1952 | |
| ANIMAS VALLEY DITCH AND WATER COMPANY | Good Standing | Durango | 1880 |
| ANIMAS VIEW DITCH COMPANY | Good Standing | Durango | 1993 |
| ANIMAS-BEAR CREEK DITCH COMPANY | Administratively Dissolved | 1995 | |
| ANNUAL UNION RESERVOIR MUSIC & ARTS FESTIVAL | Good Standing | Lafayette | 2010 |
| Antonio Ditch Solar LLC | Good Standing | San Francisco | 2026 |
| ANTONIO LOPEZ DITCH COMPANY, INC. | Good Standing | Trinidad | 1971 |
| ANTONITO DITCH COMPANY | Exists | 1947 | |
| APOLLO MUTUAL WATER ASSOCIATION, INC. | Voluntarily Dissolved | Boulder | 1990 |
| APPLE BLOSSOM HEIGHTS/LESLEE MINOR SUBDIVISION IRRIGATION COMPANY | Administratively Dissolved | 1998 | |
| APPLETON LATERAL DITCH COMPANY | Exists | 1918 | |
| APPLETON ML350 DITCH COMPANY, INC. | Good Standing | Grand Junction | 1994 |
| APPLETON NORTHWEST (ML 369) LATERAL & DRAINAGE CORPORATION | Good Standing | Grand Junction | 2000 |
| APPLIED PETROLEUM RESERVOIR TECHNOLOGY, LLC | Administratively Dissolved | Parker | 1998 |
| ARAPAHO MUTUAL WATER & RECREATION CO. | Exists | 1966 | |
| ARAPAHOE WATER USERS AND PROPERTY OWNERS ASSOCIATION, INC. | Good Standing | Lafayette | 1996 |
| ARBOR LATERAL COMPANY | Exists | 1898 | |
| Arch Ditch Association | Good Standing | Gunnison | 2013 |
| Arkansas Ditch & Drainage Corporation | Good Standing | Mesa | 2011 |
| Arkansas Groundwater and Reservoir Association | Good Standing | Fowler | 1965 |
| ARKANSAS GROUNDWATER USERS ASSOCIATION | Merged | Fowler | 1995 |
| ARKANSAS RIVER MUTUAL IRRIGATION COMPANY | Exists | 1921 | |
| ARLIAN RANCH DITCH COMPANY | Good Standing | Carbondale | 1988 |
| ARROYO SPRINGS DITCH COMPANY | Exists | 1919 | |
| ASHLEY LATERAL COMPANY | Exists | 1917 | |
| ASPEN MEADOWS DITCH COMPANY | Good Standing | Aspen | 1996 |
| ASPEN PRESERVE DITCH & RESERVOIR COMPANY | Good Standing | Aspen | 2004 |
| ASPENWOOD MEADOWS WATER USERS ASSOCIATION | Good Standing | Grand Junction | 1996 |
| Association of Dallas Creek Water Users, Inc. | Voluntarily Dissolved | Ridgway | 2013 |
| ATKINSON CANAL COMPANY | Voluntarily Dissolved | Aspen | 1996 |
| AUTREY-MCCAMMON DITCH COMPANY | Exists | 1929 | |
| BACA IRRIGATING DITCH COMPANY | Exists | 1916 | |
| BACHELOR SWITCH WATER USERS ASSOCIATION | Good Standing | Ouray | 1972 |
| BAILEY EXTENSION RESERVOIR COMPANY | Exists | 1915 | |
| BAILEY LATERAL DITCH COMPANY | Exists | 1918 | |
| BAKER LATERAL COMPANY | Good Standing | Severance | 2013 |
| BAKER LATERAL DITCH COMPANY | Delinquent | 1919 | |
| BAKER-OTT LATERAL COMPANY | Good Standing | 1905 | |
| Bane and Thomas Ditch Company | Good Standing | Carbondale | 2011 |
| Banks-Tyner Ditch Company | Good Standing | Durango | 2013 |
| Banks/Tyner Ditch Co. | Delinquent | Durango | 2006 |
| BAR NOTHING RANCH MUTUAL DITCH AND RESERVOIR COMPANY | Good Standing | Lake Charles | 1989 |
| Barr Lake and Milton Reservoir Watershed Association | Good Standing | Denver | 2005 |
| BARROWS LATERAL DITCH COMPANY | Exists | 1932 | |
| Basin Ditch Company | Good Standing | Carbondale | 2007 |
| BATTLEMENT MESA DITCH AND RESERVOIR COMPANY | Exists | 1904 | |
| Baxter Ditch Association | Good Standing | Steamboat Springs | 2015 |
| BAYOU DITCH ASSOCIATION | Good Standing | Arvada | 1976 |
| BEAR CREEK DITCH COMPANY | Voluntarily Dissolved | Pagosa Springs | 1989 |
| BEAR CREEK RIDGE DITCH COMPANY | Voluntarily Dissolved | South Fork | 2000 |
| BEAR RIVER RESERVOIR CO. | Good Standing | Yampa | 1956 |
| BEASLEY WATER USERS ASSOCIATION | Exists | 1961 | |
| Beaver Creek Mutual Water Company | Good Standing | Rifle | 2017 |
| BEAVER DITCH COMPANY | Exists | 1882 | |
| BEAVER DITCH COMPANY | Exists | 1922 | |
| BEAVER FARMER'S CANAL AND DITCH COMPANY | Exists | 1889 | |
| BEAVER RESERVOIR COMPANY | Exists | 1956 | |
| BECKWITH DITCH AND RESERVOIR COMPANY | Good Standing | Longmont | 1912 |
| BEE LINE DITCH COMPANY | Good Standing | Milliken | 1887 |
| BEE LINE LATERAL COMPANY | Administratively Dissolved | 1976 | |
| BEECH HILL WATER USERS ASSOCIATION | Good Standing | Lyons | 1978 |
| BELL COURT LATERAL DITCH COMPANY | Exists | 1948 | |
| Belmont Farms Irrigation Association | Good Standing | Severance | 2004 |
| BENNETT AND KERR EXTENSION DITCH COMPANY | Good Standing | Berthoud | 1918 |
| Bennett Reservoir LLC | Good Standing | Brighton | 2021 |
| BENT COUNTY RESERVOIR COMPANY | Exists | 1906 | |
| BERKELEY MUTUAL DITCH COMPANY | Exists | 1924 | |
| BERNHARDT "320" WATER USERS ASSOCIATION | Voluntarily Dissolved | Gill | 1974 |
| BESS GIRL DITCH COMPANY | Good Standing | Pagosa Springs | 1981 |
| BESSEMER IRRIGATING DITCH COMPANY | Good Standing | Pueblo | 1894 |
| BEST COLLATERAL, INC. | Good Standing | Novato | 1989 |
| BETH EDEN MUTUAL WATER COMPANY | Administratively Dissolved | 1970 | |
| BEVERLY HEIGHTS MUTUAL DITCH AND RESERVOIR COMPANY | Exists | 1929 | |
| BEVERLY HILLS MUTUAL WATER CO. | Exists | 1957 | |
| BIG BEAVER RESERVOIR COMPANY | Exists | 1905 | |
| BIG BLUE DITCH COMPANY | Good Standing | Cimarron | 1935 |
| BIG BOTTOM DITCH COMPANY | Exists | 1964 | |
| BIG CREEK RESERVOIR COMPANY | Exists | 1894 | |
| BIG DRY CREEK DITCH & RESERVOIR COMPANY | Exists | 1890 | |
| BIG GULCH DITCH COMPANY | Exists | 1948 | |
| Big Horn Reservoir, LLC | Good Standing | Greeley | 2019 |
| Big Ruby Reservoir, LLC | Good Standing | Midland | 2021 |
| BIG STICK DITCH COMPANY | Exists | 1909 | |
| BIG THOMPSON AND PLATTE RIVER DITCH COMPANY | Good Standing | Milliken | 1865 |
| BIJOU LATERAL #5 DITCH COMPANY | Good Standing | Fort Morgan | 1909 |
| BIJOU LATERAL DITCH COMPANY | Good Standing | Fort Morgan | 1902 |
| BIJOU NO. 2 LATERAL COMPANY | Good Standing | Fort Morgan | 1908 |
| Bilateral Beats, LLC | Delinquent | Castle Rock | 2017 |
| BILATERAL MARKETING LLC | Voluntarily Dissolved | Littleton | 2003 |
| BILATERAL SOLUTIONS, LLC | Delinquent | Brush | 2016 |
| Bilateral, LLC | Voluntarily Dissolved | Colorado Springs | 2019 |
| BILES LATERAL DITCH COMPANY | Exists | 1900 | |
| BILLINGS DITCH COMPANY | Good Standing | Alamosa | 1884 |
| BLISS LATERAL & IRRIGATION COMPANY | Good Standing | Pierce | 1909 |
| BLOCHOWITZ DITCHING, INC. | Good Standing | Julesburg | 1999 |
| Blue Lake Reservoir Company | Good Standing | Vail | 2008 |
| BLUE MOUNTAIN WATER USERS ASSOCIATION | Good Standing | Berthoud | 1972 |
| Blue Reservoir Property, LLC | Voluntarily Dissolved | Greenwood Village | 2024 |
| BLUFF DITCH ASSOCIATION | Exists | 1945 | |
| BOB CREEK RESERVOIR LATERAL ASSOCIATION | Exists | 1914 | |
| Bodhi Tree Bilateral LLC | Good Standing | Longmont | 2016 |
| BOHLENDER LATERAL COMPANY | Exists | 1918 | |
| BOLLINGER AND NELSON DITCH COMPANY | Good Standing | Norwood | 1950 |
| BOND LATERAL DITCH COMPANY | Exists | 1880 | |
| BORD DITCH COMPANY | Good Standing | Cortez | 1982 |
| BORREGO DITCH COMPANY | Exists | 1936 | |
| BOSTON FARM LATERAL ASSOCIATION | Exists | 1914 | |
| BOULDER & LEFT HAND IRRIGATION COMPANY | Good Standing | Longmont | 1921 |
| Boulder and Left Hand Irrigation Company | Good Standing | Longmont | 1973 |
| BOULDER AND WELD COUNTY DITCH COMPANY | Good Standing | Longmont | 1912 |
| BOULDER AND WHITE ROCK DITCH AND RESERVOIR COMPANY | Good Standing | Longmont | 1913 |
| BOUNTIFUL LATERAL DITCH COMPANY | Exists | 1907 | |
| Bowditch & Cassell Public Affairs, LLC | Good Standing | Denver | 2015 |
| Bowditch LLC | Good Standing | Salida | 2021 |
| Bowditch Public Affairs, Inc. | Good Standing | Denver | 2015 |
| BOWEN DITCH COMPANY, INC. | Good Standing | Nathrop | 1943 |
| BOX ELDER LATERAL DITCH COMPANY | Exists | 1922 | |
| BOX SPRINGS CANAL AND RESERVOIR COMPANY | Good Standing | Ordway | 1901 |
| BOXWELL LATERAL COMPANY | Exists | 1919 | |
| Boyd Ditch Lateral Ditch Company | Good Standing | Cedaredge | 2025 |
| BRAVO DITCH COMPANY (THE) (WATER) | Good Standing | Sterling | 1893 |
| Brennan Box Lateral Company | Good Standing | Lafayette | 2018 |
| BRIGHT AND BROWN LATERAL DITCH COMPANY | Exists | 1887 | |
| BRIGHTON GARDENS RESERVOIR AND DITCH COMPANY | Exists | 1904 | |
| BRIGHTON LATERAL DITCH COMPANY | Good Standing | Brighton | 1910 |
| BRISCOE IRRIGATION COMPANY | Good Standing | La Salle | 1931 |
| BROAD VIEW MUTUAL WATER COMPANY | Exists | 1926 | |
| BROAD VIEW MUTUAL WATER COMPANY | Voluntarily Dissolved | 1926 | |
| BROOKSIDE DITCH CO. | Good Standing | Wheat Ridge | 1972 |
| BROOMFIELD HIGH LINE DITCH COMPANY | Exists | 1890 | |
| BROOMFIELD RESERVOIR AND DITCH COMPANY | Exists | 1921 | |
| BROWN DRAIN DITCH COMPANY | Exists | 1917 | |
| BRUSH LATERAL DITCH COMPANY | Good Standing | Brush | 1890 |
| BRUSH LATERAL EXTENSION DITCH COMPANY | Delinquent | 1927 | |
| BUCKEYE LATERAL DITCH COMPANY | Exists | 1918 | |
| BUCKHORN HIGHLINE DITCH COMPANY | Exists | 1921 | |
| BUCKHORN WATER USERS ASSOCIATION | Delinquent | 1951 | |
| BUCKINGHAM IRRIGATION COMPANY | Good Standing | Loveland | 1956 |
| BUCKINGHAM RESERVOIR AREA OWNERS ASSOCIATION | Good Standing | Loveland | 1999 |
| Buckskin Nailor Ditch Company | Good Standing | Bayfield | 2020 |
| BULL BASIN RESERVOIR COMPANY | Voluntarily Dissolved | Grand Junction | 1920 |
| BULL CREEK RESERVOIR CANAL & POWER COMPANY | Good Standing | Mesa | 1895 |
| Bunyan Lateral Ditch Company | Good Standing | Longmont | 2012 |
| BURGERMEISTER AND DITCH, INC. | Administratively Dissolved | Vail | 1984 |
| BURGESS WATER USERS ASSOCIATION | Good Standing | Cedaredge | 2000 |
| BUSHMAN DITCH COMPANY | Exists | 1900 | |
| BUTTE DITCH COMPANY | Exists | 1915 | |
| C&O Canal 100 Mile Endurance Run LLC | Voluntarily Dissolved | Jefferson | 2015 |
| C-C DITCH COMPANY | Exists | 1949 | |
| CACHE A LA POUDRE IRRIGATING DITCH COMPANY | Good Standing | Eaton | 1893 |
| CACHE LA POUDRE PRESSURIZED IRRIGATION CO. | Delinquent | Lucerne | 2004 |
| cactus ditch llc | Voluntarily Dissolved | Glenwood Springs | 2008 |
| CADDOA RESERVOIR ASSOCIATION | Exists | 1933 | |
| CADEZ LATERAL DITCH ASSOCIATION | Administratively Dissolved | 2001 | |
| CAMDEN LATERAL COMPANY | Good Standing | Brush | 1924 |
| CAMELOT SUBDIVISION DRAINAGE AND IRRIGATION COMPANY | Administratively Dissolved | 1995 | |
| Camfield Water Users Association | Delinquent | Eaton | 2004 |
| CAMPBELL LATERAL, INC. | Good Standing | Bayfield | 2002 |
| CAMPION LATERAL COMPANY | Exists | 1908 | |
| CANAL + U.S. TECHNOLOGIES, INC., Colorado Authority Terminated June 1, 2003 | Revoked | Cupertino | 2000 |
| Canal 922 CS, LLC | Good Standing | Centennial | 2022 |
| Canal 922 JS, LLC | Good Standing | Centennial | 2022 |
| CANAL AIR, LLC, Colorado Authority Relinquished November 5, 2018 | Withdrawn | Danbury | 2002 |
| CANAL AVENUE PARK, LLC | Good Standing | Boulder | 2003 |
| Canal Cir Properties LLC | Good Standing | Castle Rock | 2022 |
| Canal Circle, LLC | Voluntarily Dissolved | Englewood | 2009 |
| Canal Construction | Good Standing | Colorado Springs | 2017 |
| Canal Crossing Solar, LLC | Good Standing | Chicago | 2023 |
| CANAL DRIVE, LLC | Delinquent | Greeley | 2000 |
| Canal Holdings, LLC | Good Standing | Fort Collins | 2019 |
| Canal Home, LLC | Good Standing | Broomfield | 2022 |
| Canal HR, Inc., Colorado Authority Relinquished June 4, 2024 | Withdrawn | Metairie | 2022 |
| CANAL INSURANCE COMPANY | Good Standing | Greenville | 1957 |
| Canal Investments, LLC | Good Standing | Arvada | 2020 |
| Canal KB LLC | Good Standing | Greenwood Village | 2014 |
| Canal LLC | Good Standing | Fort Collins | 2020 |
| CANAL PLACE LIMITED | Voluntarily Dissolved | Denver | 2016 |
| CANAL PLACE LLC | Voluntarily Dissolved | Aurora | 1996 |
| Canal Place Properties, LLC | Noncompliant | Aurora | 2017 |
| Canal Properties, LLC | Good Standing | Centennial | 2013 |
| Canal Road Management, LLC | Delinquent | Frederick | 2019 |
| Canal Run LLC | Good Standing | Vail | 2026 |
| CANAL SIDE PROPERTIES, LTD. | Voluntarily Dissolved | 1991 | |
| CANAL STREET BREWING CO., L.L.C. | Good Standing | Grand Rapids | 2019 |
| Canal Street Credits, L.L.C. | Voluntarily Dissolved | Pueblo | 2005 |
| Canal Street Homes, LLC | Voluntarily Dissolved | Thornton | 2017 |
| Canal street productions LLC | Delinquent | Denver | 2024 |
| CANAL STREET RAILWAY, L.L.C. | Administratively Dissolved | 1995 | |
| Canal Ventures, LLC | Good Standing | Erie | 2024 |
| CANAL VISTA, LLC | Voluntarily Dissolved | Littleton | 2001 |
| Canal Walk LLC | Voluntarily Dissolved | Westminster | 2007 |
| CANAL WATER LIMITED LIABILITY COMPANY | Good Standing | Longmont | 1995 |
| Canal's Construction LLC | Delinquent | Denver | 2024 |
| CANALE'S TRANSPORT LLC | Delinquent | Denver | 2022 |
| Canales Construction LLC | Good Standing | Aurora | 2017 |
| Canales Construction | Delinquent | Aurora | 2019 |
| Canales Herramientas LLC | Good Standing | Aurora | 2025 |
| Canales Interpretation LLC | Good Standing | Brighton | 2022 |
| CANALES M TRANSPORT LLC | Good Standing | Evans | 2022 |
| CANALES N SPANISH GROUP LLC | Voluntarily Dissolved | Centennial | 2003 |
| Canales photography LLC | Delinquent | Thornton | 2023 |
| Canales Restaurants, LLC | Delinquent | Thornton | 2017 |
| Canales Roofing | Delinquent | Houston | 2014 |
| canales trucking LLC | Good Standing | Brighton | 2013 |
| CANALES, LLC | Delinquent | Vail | 2002 |
| Canaletas Llc | Good Standing | Aurora | 2025 |
| Canalis Pharmaceuticals, Inc | Delinquent | Tampa | 2018 |
| CanalSense LLC | Good Standing | Grand Junction | 2026 |
| Canalside Breeze LLC | Good Standing | Cape Coral | 2022 |
| CANalytics Laboratories, Inc. | Delinquent | Valparaiso | 2011 |
| Canalytics llc | Good Standing | Longmont | 2021 |
| CANON CITY AND OIL CREEK DITCH COMPANY | Good Standing | Canon City | 1878 |
| CANON CITY HYDRAULIC AND IRRIGATING DITCH COMPANY | Good Standing | Canon City | 1878 |
| CANON DITCH COMPANY | Delinquent | Antonito | 1933 |
| CANYON CREEK IRRIGATION COMPANY | Administratively Dissolved | Grand Junction | 1978 |
| CANYON CREEK NO. 3 IRRIGATION, CO. | Good Standing | Grand Junction | 1983 |
| CANYON CREEK NUMBER TWO IRRIGATION COMPANY | Good Standing | Grand Junction | 1980 |
| CAPITOL HILL LATERAL DITCH ASSOCIATION | Exists | 1904 | |
| CARL SMITH RESERVOIR COMPANY | Exists | 1947 | |
| CARLSON DITCH CO. | Administratively Dissolved | 1974 | |
| Carlson Ditch Water Co., LLC | Good Standing | Colorado Springs | 2024 |
| CARMEL DRAINAGE DITCH USERS ASSOCIATION | Good Standing | Alamosa | 1985 |
| CARMEL RESERVOIR COMPANY | Exists | 1957 | |
| Carol McAnally's Rhythm of Life LLC | Voluntarily Dissolved | Lakewood | 2008 |
| Carpenter and Mitchell Ditch Company, Inc. | Good Standing | Mancos | 2004 |
| CARSON LATERAL DITCH COMPANY | Exists | 1902 | |
| CARSON-BEAR CREEK DITCH COMPANY | Good Standing | Durango | 1998 |
| Carter Reservoir Mustangs Inc. | Good Standing | Richland | 2023 |
| CASTLE DITCH COMPANY | Good Standing | Eagle | 1990 |
| Castle Mountain Irrigation, Road and Recreation Association | Delinquent | Gunnison | 1971 |
| CATHOLIC LATERAL DITCH COMPANY | Exists | 1961 | |
| CATLIN CANAL COMPANY | Good Standing | Rocky Ford | 1903 |
| CEDAR AVENUE DITCH COMPANY | Good Standing | Grand Junction | 1977 |
| CEDAR CANON, IRON SPRINGS DITCH AND RESERVOIR COMP | Good Standing | Crawford | 1924 |
| CEDAR MESA DITCH COMPANY | Good Standing | Cedaredge | 1990 |
| CEDAR MESA RESERVOIR COMPANY | Good Standing | Cedaredge | 1898 |
| Cedar Springs Reservoir LLC | Good Standing | Drake | 2024 |
| CELADON II DITCH COMPANY | Voluntarily Dissolved | Durango | 2001 |
| CEMENT LATERAL OF PRAIRIE DITCH, INC. | Exists | 1951 | |
| Centennial Irrigating Ditch Company | Voluntarily Dissolved | Alamosa | 2017 |
| Centennial Irrigating Ditch Company, Inc. | Good Standing | Monte Vista | 1883 |
| Central Capital Collateral, Inc | Good Standing | Las Vegas | 2014 |
| CHACE LATERAL COMPANY | Good Standing | Fort Morgan | 1942 |
| CHACE LATERAL DITCH COMPANY | Exists | 1908 | |
| CHALLGREN LATERAL COMPANY | Good Standing | Loveland | 1909 |
| Chambers Reservoir Equities LLC | Good Standing | Greenwood Village | 2010 |
| Chambers Reservoir, LLC | Voluntarily Dissolved | Greenwood Village | 2009 |
| CHARLO MUTUAL DITCH COMPANY | Exists | Loma | 2003 |
| Chatfield Reservoir Mitigation Company, Inc. | Good Standing | Highlands Ranch | 2015 |
| CHATFIELD RESERVOIR SELF STORAGE, LLC | Good Standing | Littleton | 2000 |
| Cheap Ditch Company, LLC | Good Standing | Grand Junction | 2005 |
| Chelley Canales LLC | Good Standing | Denver | 2018 |
| CHERRY CREEK MUTUAL IRRIGATION COMPANY | Exists | 1925 | |
| CHERRY CREEK WATER USERS ASSOCIATION | Delinquent | Franktown | 1988 |
| CHERRY VALE ACRES MUTUAL WATER AND SEWER COMPANY | Exists | 1941 | |
| CHERRYRIDGE MUTUAL WATER COMPANY | Exists | 1954 | |
| CHICOSA WATER USERS ASSOCIATION | Good Standing | Trinidad | 1990 |
| CHILCOTT DITCH COMPANY | Good Standing | Monument | 1874 |
| CHILDS DITCH COMPANY | Exists | 1921 | |
| CHILILI DITCH COMPANY | Exists | 1926 | |
| CHIPPERFIELD LANE DITCH INCORPORATED | Voluntarily Dissolved | Silt | 1997 |
| CHIVINGTON IRRIGATION COMPANY | Exists | 1916 | |
| CHRISTIAN LATERAL DITCH COMPANY | Consolidated | 1901 | |
| CIMARRON AND UNCOMPAHGRE VALLEY CANAL AND RESER | Delinquent | 1900 | |
| CIRCLE "C" WATER USERS ASSOCIATION | Good Standing | Longmont | 1981 |
| CITY VIEW IRRIGATION COMPANY | Exists | 1924 | |
| CLAIRFIELD IRRIGATION DISTRICT | Good Standing | Lakewood | 2008 |
| CLARK LATERAL COMPANY | Exists | 1920 | |
| CLARK LATERAL DITCH COMPANY | Good Standing | Arvada | 1910 |
| CLAYTON DITCH COMPANY, INC. | Good Standing | Pagosa Springs | 2003 |
| CLEAR CREEK HEIGHTS MUTUAL WATER ASSOCIATION Reinstated October 07, 2018 | Good Standing | Fort Collins | 1963 |
| CLEAR CREEK WATER USERS ALLIANCE | Voluntarily Dissolved | Lakewood | 1980 |
| CLEAR LAKE RESERVOIR AND LATERAL IRRIGATION COMPAN | Exists | 1911 | |
| CLENNON LATERAL DITCH COMPANY | Good Standing | Platteville | 1910 |
| CLOVER MEADOW LATERAL DITCH COMPANY | Delinquent | Lamar | 2003 |
| CLUB VIEW ESTATES IRRIGATION COMPANY | Exists | 1963 | |
| COAL CREEK IRRIGATION COMPANY | Exists | 1918 | |
| Coal Road Water Users, LLC | Good Standing | Hotchkiss | 2019 |
| Coffee Ditch Company LLC | Noncompliant | Austin | 2024 |
| COLE DITCH COMPANY | Good Standing | Greeley | 1895 |
| COLE RESERVOIR COMPANY | Delinquent | Eckert | 1960 |
| COLEMAN DITCH AND RESERVOIR COMPANY | Exists | 1904 | |
| Collateral Analytics, LLC | Delinquent | Jacksonville | 2020 |
| Collateral Beauty LLC | Good Standing | Colorado Springs | 2026 |
| Collateral Capital, LLC | Delinquent | Aspen | 2013 |
| Collateral Cash LLC | Delinquent | Denver | 2015 |
| collateral cash | Delinquent | Denver | 2015 |
| Collateral Finance Partners, LLC | Voluntarily Dissolved | Denver | 2004 |
| Collateral Insight LLC | Delinquent | Thornton | 2025 |
| Collateral Intelligence LLC, Colorado Authority Relinquished April 2, 2020 | Withdrawn | Omaha | 2013 |
| Collateral IQ, Inc. | Good Standing | Castle Rock | 2016 |
| Collateral Management LLC, Colorado Authority Relinquished April 25, 2023 | Withdrawn | Fort Lauderdale | 2013 |
| COLLATERAL MORTGAGE, LTD., Colorado Authority Terminated September 4, 2004 | Revoked | Birmingham | 1995 |
| COLLATERAL PROCESSING GROUP, LLC, Colorado Authority Relinquished March 21, 2022 | Withdrawn | Berwyn | 2013 |
| Collateral Recovery Company, LLC | Delinquent | Birmingham | 2006 |
| Collateral Resources LLC | Good Standing | Pierce | 2022 |
| COLLATERAL SPECIALISTS INC. | Good Standing | Petaluma | 2012 |
| Collateral,Ltd | Delinquent | Denver | 2016 |
| COLLIER DITCH COMPANY | Good Standing | Boone | 1897 |
| COLLINS DITCH COMPANY | Exists | 1900 | |
| COLORADO AND KANSAS CANAL AND RESERVOIR COMPANY | Exists | 1890 | |
| Colorado Augmentation Canal Company | Good Standing | Greenwood Village | 2007 |
| COLORADO COLLATERAL LENDING, INC. | Delinquent | Pueblo | 2001 |
| COLORADO EASTERN IRRIGATION LAND AND RESERVOIR | Exists | 1890 | |
| COLORADO LAKE AND RESERVOIR MANAGEMENT ASSOCIATION | Good Standing | Denver | 1997 |
| Colorado Land & Water Users Association | Delinquent | Lakewood | 2020 |
| Colorado Root Canal Specialist, PLLC | Good Standing | Thornton | 2017 |
| COLUMBINE LATERAL DITCH COMPANY | Exists | 1904 | |
| COLUMBINE RESERVOIR CO. | Voluntarily Dissolved | Bond | 1979 |
| COMMUNITY DITCH AND RESERVOIR COMPANY | Exists | 1885 | |
| Concerned Home Owners of Pinnacle at Highline Canal, LLC | Delinquent | Littleton | 2014 |
| CONEJOS AND SAN RAFAEL DITCH COMPANY | Exists | 1905 | |
| Conejos River System Water Users Association | Delinquent | Manassa | 2012 |
| CONNER WATER USERS ASSOCIATION | Good Standing | Longmont | 1973 |
| CONNORS LATERAL DITCH COMPANY | Consolidated | 1896 | |
| CONSOLIDATED CHRISTIAN-CONNORS LATERAL DITCH COMPANY | Exists | 2003 | |
| CONSOLIDATED DITCH AND HEADGATE COMPANY | Good Standing | Monte Vista | 1910 |
| CONSOLIDATED DITCHES COMPANY OF WATER DISTRICT NO. | Exists | 1902 | |
| CONSOLIDATED LATERAL DITCH COMPANY | Exists | 1903 | |
| Consolidated Reservoir II, Inc. | Good Standing | Glenwood Springs | 2012 |
| CONSOLIDATED RESERVOIR, INC. | Exists | 1958 | |
| Continental Lateral, Inc. | Good Standing | Florence | 2005 |
| CONTINENTAL RESERVOIR COMPANY | Exists | 1945 | |
| COON CREEK RESERVOIR AND DITCH COMPANY | Good Standing | Grand Junction | 1924 |
| COSTILLA DITCH COMPANY | Exists | 1916 | |
| COTTAGE PLACE LATERAL DITCH COMPANY | Exists | 1916 | |
| COTTONWOOD DITCH COMPANY | Exists | 1870 | |
| COTTONWOOD LAKES RESERVOIR COMPANY | Delinquent | Molina | 1895 |
| Cottonwood Water Users Association, Inc. | Good Standing | Laporte | 2006 |
| COUNTRY CLUB HILLS WATER USERS ASSOCIATION | Good Standing | Sterling | 2000 |
| COUNTRY CLUB PARK IRRIGATION | Good Standing | Grand Junction | 1948 |
| COUNTY RD 36 WATER USERS ASSOCIATION | Delinquent | Platteville | 2002 |
| County Road 102 Water Users Association LLC | Good Standing | Carbondale | 2016 |
| CRATER RESERVOIR COMPANY | Exists | 1918 | |
| CRAWFORD LATERAL DITCH COMPANY | Exists | 1924 | |
| CRM Collateral II, Inc. | Voluntarily Dissolved | Denver | 2006 |
| CRM Collateral, Inc. | Delinquent | Fort Lupton | 2005 |
| CROWLEY LATERAL DITCH COMPANY | Exists | 1899 | |
| CROWN CANAL TECHNOLOGY INC | Delinquent | Denver | 2023 |
| CRYSTAL CREEK DITCH COMPANY, INC. | Good Standing | Mancos | 1993 |
| Crystal River East Mesa Ditch Company | Merged | Carbondale | 2006 |
| Cuchara River Ditch Company | Delinquent | La Veta | 2005 |
| CULVER IRRIGATION COMPANY | Good Standing | Longmont | 1909 |
| CURRANT CREEK DITCH AND RESERVOIR COMPANY | Exists | 1905 | |
| CURRIER RESERVOIR #2 | Voluntarily Dissolved | Collbran | 2004 |
| D&J Aspire Canal Place LLC | Good Standing | Aurora | 2024 |
| DAILEY LATERAL COMPANY | Good Standing | Fort Morgan | 1908 |
| DAISY DITCH COMPANY | Exists | 1961 | |
| DALLAS DITCH COMPANY | Good Standing | Montrose | 1956 |
| DARLA JEAN WATER USERS ASSOCIATION, INC. | Good Standing | Grand Junction | 1977 |
| DARLINGTON DITCH COMPANY | Exists | 1950 | |
| DARNELL LATERAL DITCH COMPANY | Good Standing | Windsor | 2011 |
| DART Collateral Manager LLC | Good Standing | New York | 2024 |
| DAVIDSON DITCH & RESERVOIR COMPANY | Good Standing | Longmont | 1919 |
| DAVIDSON DITCH COMPANY | Exists | 1875 | |
| DAVIDSON HIGH LINE LATERAL DITCH COMPANY | Good Standing | Longmont | 1895 |
| Davies Lot- 2 Water Users Association | Delinquent | Cortez | 2011 |
| DAVIS BROTHERS DITCH COMPANY | Exists | 1895 | |
| Davis Ditch LLC | Voluntarily Dissolved | Lewis | 2015 |
| DAVIS DITCHING, INC. | Administratively Dissolved | 1995 | |
| DAVY DITCH AND RESERVOIR COMPANY | Exists | 1918 | |
| DAYTON LATERAL ASSOCIATION | Exists | 1933 | |
| DCV Ditch Company LLC | Good Standing | Broomfield | 2022 |
| DECKER LATERAL COMPANY | Good Standing | Eaton | 1907 |
| DEEP CREEK RESERVOIR COMPANY | Exists | 1909 | |
| DEEP CUT IRRIGATING DITCH, INC. | Exists | 1956 | |
| DEER FOOT LAND, STOCK AND DITCH COMPANY | Exists | 1889 | |
| DeFranco Ditch Co. | Good Standing | Fruita | 2004 |
| DEL RIO IRRIGATING DITCH COMPANY | Exists | 1916 | |
| DELTA CANAL COMPANY | Delinquent | 1889 | |
| DELTA CHIEF DITCH COMPANY | Delinquent | 1884 | |
| DENVER RESERVOIR IRRIGATION COMPANY | Exists | 1907 | |
| DENVER-VIEW RESERVOIR AND IRRIGATION COMPANY | Exists | 1901 | |
| DESERT LAND RESERVOIR & CANAL COMPANY | Exists | 1908 | |
| DESERT MEADOWS WATER USERS ASSOCIATION, INC. | Good Standing | Grand Junction | 2001 |
| DEVLAN LATERAL COMPANY | Exists | 1949 | |
| Dig-a-Ditch Ranch, LLC | Delinquent | Elizabeth | 2008 |
| Diggin' Ditches LLC | Delinquent | Pueblo | 2023 |
| Digital Collateral, LLC | Voluntarily Dissolved | Denver | 2009 |
| DIKE LATERAL COMPANY | Exists | 1920 | |
| Dirty Ditch Dogs, LLC | Delinquent | Montrose | 2023 |
| District 64 Reservoir Company | Good Standing | Sterling | 2006 |
| DITCH AND RESERVOIR COMPANY ALLIANCE | Good Standing | Fort Collins | 2001 |
| Ditch Burner, Inc. | Delinquent | Eaton | 1997 |
| Ditch Capital, LLC | Good Standing | Denver | 2025 |
| Ditch Cat Productions, LLC | Good Standing | Aurora | 2025 |
| Ditch Creek LLC | Good Standing | Crested Butte | 2018 |
| Ditch Digger Decent Deeds | Good Standing | Golden | 2026 |
| Ditch Investments LLC | Good Standing | Glencoe | 2017 |
| Ditch Resources LLC | Good Standing | Broomfield | 2026 |
| Ditch Rider GP, LLC | Voluntarily Dissolved | Lafayette | 2022 |
| Ditch Rider LLC | Voluntarily Dissolved | Lafayette | 2020 |
| DITCH WATCH | Delinquent | Arvada | 1985 |
| ditch weed brothers LLC | Delinquent | Parachute | 2019 |
| DITCH WITCH OF CENTRAL TEXAS, INC. | Good Standing | Selma | 2014 |
| DITCH WITCH OF THE ROCKIES | Good Standing | Brighton | 2017 |
| Ditch Yo Junk LLC | Good Standing | Elizabeth | 2026 |
| DITCHDIGGER CLOTHING CO., INCORPORATED | Voluntarily Dissolved | Monument | 2001 |
| Ditchdiggers 2 Inc. | Voluntarily Dissolved | Shawnee | 2019 |
| Ditches To Riches | Good Standing | Windsor | 2020 |
| DitchFest LLC | Delinquent | Oak Creek | 2014 |
| DitchFest | Delinquent | Oak Creek | 2014 |
| DITCHMAN HOLDINGS, L.L.L.P. | Good Standing | Denver | 1998 |
| Ditchman West, LLC | Delinquent | Denver | 2008 |
| DITCHRIDERS INCORPORATED | Delinquent | Longmont | 2001 |
| DIVIDE CANAL AND RESERVOIR COMPANY | Good Standing | Eaton | 1904 |
| DIVIDE CREEK HIGH LINE DITCH COMPANY | Good Standing | Silt | 1900 |
| DIVIDE DRAINAGE AND IRRIGATION COMPANY | Exists | 1889 | |
| DIVIDE LATERAL COMPANY | Exists | 1904 | |
| DIVIDE LATERAL DITCH COMPANY | Exists | 1925 | |
| Divide Line Lateral Company | Good Standing | Eaton | 2021 |
| DIVIDE SOUTH WATER USERS ASSOCIATION AND DITCH COMPANY | Good Standing | Divide | 1973 |
| DJK Canal Properties LLC | Voluntarily Dissolved | Fort Collins | 2011 |
| DOG FISH LAKE RESERVOIR COMPANY | Exists | 1903 | |
| DOMINGUEZ RESERVOIR CORPORATION | Delinquent | Grand Junction | 1988 |
| DOMINQUEZ RESERVOIR COMPANY LLC | Administratively Dissolved | Denver | 1996 |
| DON QUIXOTE DITCH COMPANY | Exists | 1924 | |
| Double B Water Users Association | Good Standing | Whitewater | 2009 |
| Double Ditch Ranch LLC | Good Standing | Longmont | 2025 |
| DREGMAN-WORK LATERAL COMPANY | Exists | 1908 | |
| DRY CREEK LATERAL DITCH COMPANY | Good Standing | Berthoud | 1880 |
| DRY CREEK LATERAL DITCH COMPANY | Voluntarily Dissolved | Berthoud | 2002 |
| DRY CREEK VALLEY DITCH COMPANY | Good Standing | Broomfield | 1885 |
| DRY CREEK-DAVIDSON DITCH COMPANY | Good Standing | Longmont | 1965 |
| DUGGER MUTUAL LATERAL COMPANY | Exists | 1937 | |
| DULTON EXTENSION DITCH AND RESERVOIR COMPANY | Exists | 1917 | |
| Dumb Ass Ditch Digger (DADD) Enterprise, LLC | Delinquent | Divide | 2020 |
| DUNCAN IRRIGATION ASSOCIATION | Good Standing | Wellington | 2016 |
| DURKEE DITCH COMPANY | Good Standing | Hotchkiss | 1902 |
| DYER FORK DITCH COMPANY | Exists | 1921 | |
| DYNAMIC RESERVOIR MANAGEMENT, INC. | Delinquent | Greenwood Village | 1997 |
| EAGLE DITCH & RESERVOIR COMPANY | Exists | 1908 | |
| EAGLE DITCH COMPANY | Exists | 1877 | |
| EAGLE PARK RESERVOIR COMPANY | Good Standing | Breckenridge | 1998 |
| EAGLE RESERVOIRS WATER COMPANY LLC | Voluntarily Dissolved | Herndon | 1998 |
| EAGLE'S WATCH MUTUAL WATER COMPANY | Good Standing | Walden | 1990 |
| Eaklor Ditch Company | Good Standing | Creede | 2021 |
| Eaklor Ditch, Co. | Voluntarily Dissolved | Pagosa Springs | 2017 |
| EARL ADAMS DITCH CO., INC. | Administratively Dissolved | Pagosa Springs | 1987 |
| EAST BOULDER DITCH COMPANY | Good Standing | Denver | 1865 |
| EAST BRUSH LATERAL ASSOCIATION | Exists | 1910 | |
| EAST DITCH COMPANY | Exists | 1955 | |
| EAST FORK MUTUAL IRRIGATION COMPANY | Good Standing | Kremmling | 1977 |
| EAST FRUITA LATERAL DITCH COMPANY | Exists | 1924 | |
| EAST HUFF DITCH LCA | Delinquent | Delta | 2013 |
| EAST LATERAL DITCH COMPANY | Exists | 1926 | |
| EAST MANCOS HIGHLINE DITCH COMPANY | Good Standing | Mancos | 2004 |
| EAST MARBLE EXTENSION OF THE CLARENCE DITCH COMPAN | Good Standing | Highlands Ranch | 1982 |
| EAST NUMA LATERAL COMPANY | Exists | 1908 | |
| EAST OTTO DITCH COMPANY | Exists | 1962 | |
| EAST SIDE LATERAL DITCH COMPANY | Exists | 1908 | |
| EAST TWIN LAKES DITCHES AND WATER WORKS | Voluntarily Dissolved | Salida | 1999 |
| EASTBURY SUBDIVISION IRRIGATION COMPANY | Good Standing | Grand Junction | 1977 |
| EASTDALE MUTUAL DITCH AND RESERVOIR COMPANY | Exists | 1960 | |
| EBY CREEK - EAGLE RIVER DITCH COMPANY | Good Standing | Eagle | 2003 |
| ECHO HILLS MUTUAL WATER COMPANY | Exists | 1959 | |
| Editchecks LLC | Good Standing | Denver | 2021 |
| El Cerritos Ditch | Delinquent | Manassa | 2023 |
| EL CODA DITCH COMPANY | Exists | 1935 | |
| ELATERAL INC. | Good Standing | Westchester | 2010 |
| Electric Mountain Recreation Subdivision Water Users Association No. 1 | Good Standing | Grand Junction | 2024 |
| Electric Mountain Recreation Subdivision Water Users Association No. 2 | Good Standing | Paonia | 2024 |
| ELEVENMILE RESERVOIR RANCHES, INC. | Good Standing | Miramar Beach | 1992 |
| Elk Creek Ditch No. 2, LLC | Good Standing | Snowmass | 2017 |
| ELLINGTON DITCH COMPANY | Exists | 1916 | |
| ELLIS DITCH ASSOCIATION | Exists | Mancos | 2006 |
| ELM AVENUE LATERAL DITCH COMPANY | Exists | 1947 | |
| Elman Canales, Inc. | Delinquent | Aurora | 2007 |
| ELMWOOD LATERAL DITCH COMPANY | Good Standing | Fruita | 1963 |
| ELSIE LATERAL DITCH COMPANY | Exists | 1927 | |
| EM RESERVOIR LLC | Voluntarily Dissolved | Denver | 2003 |
| ENCANTO DITCH COMPANY | Delinquent | Fruita | 1990 |
| ENGLEWOOD/MCLELLAN RESERVOIR FOUNDATION | Delinquent | Englewood | 1999 |
| ENLARGED SOUTHSIDE IRRIGATION DITCH COMPANY | Good Standing | Trinidad | 1924 |
| ENTERPRISE DITCH COMPANY | Delinquent | 1963 | |
| ENTERPRISE IRRIGATING DITCH COMPANY | Good Standing | Denver | 1898 |
| EPHRAIM DITCH COMPANY | Exists | 1883 | |
| Equilateral Holdings Corp. | Voluntarily Dissolved | Colorado Springs | 2008 |
| Equilateral LLC | Delinquent | Rancho Santa Fe | 2009 |
| ERIE CANAL COMPANY | Exists | 1950 | |
| ERIE COAL CREEK DITCH & RESERVOIR COMPANY | Good Standing | Longmont | 1894 |
| Eurofins Reservoirs Environmental, Inc. | Good Standing | Arvada | 2002 |
| EVERGREEN HEIGHTS DITCH & RESERVOIR COMPANY | Good Standing | Olathe | 1922 |
| EVETT LATERAL DITCH COMPANY | Exists | 1913 | |
| EVOKE CANALE, LLC, Colorado Authority Relinquished April 9, 2025 | Withdrawn | Yardley | 2023 |
| EXCELSIOR IRRIGATION COMPANY | Delinquent | 1875 | |
| Extension Ditch Committee L.L.P. | Good Standing | Dolores | 2023 |
| F.H.M.Q. DITCH COMPANY | Exists | 1945 | |
| Fairfield Homes @ Quincy Reservoir, LLC | Delinquent | Littleton | 2005 |
| Fairfield Homes at Quincy Reservoir, LLC | Delinquent | Littleton | 2005 |
| Fairfield Village at Quincy Reservoir Homeowners Association, Inc. | Good Standing | Greenwood Village | 2005 |
| FAIRVIEW LAND AND CANAL COMPANY | Delinquent | La Junta | 1907 |
| Falls at Valley Ranch Water Users Association, LLC | Voluntarily Dissolved | Montrose | 2023 |
| FARMERS 110 LATERAL DITCH COMPANY | Exists | 1944 | |
| FARMERS HIGH LINE CANAL AND RESERVOIR COMPANY | Good Standing | Westminster | 1885 |
| FARMERS INDEPENDENT DITCH CO | Good Standing | Greeley | 1876 |
| FARMERS IRRIGATING DITCH & RESERVOIR COMPANY | Good Standing | Johnstown | 1878 |
| FARMERS IRRIGATION COMPANY | Exists | 1921 | |
| FARMERS LATERAL COMPANY | Exists | 1935 | |
| FARMERS PAWNEE CANAL COMPANY | Exists | 1898 | |
| FEEDER DITCH COMPANY | Delinquent | 1922 | |
| FELDMAN DITCH COMPANY | Good Standing | Paonia | 1960 |
| FERGUSON LATERAL COMPANY | Exists | 1909 | |
| FERGUSON NO. 2 LATERAL COMPANY | Exists | 1930 | |
| FERRAN DITCH COMPANY | Good Standing | Durango | 1995 |
| FIFTEENTH STREET LATERAL NO. 239 CO. | Exists | 1945 | |
| FIRST & INDEPENDENT LATERAL DITCH COMPANY | Voluntarily Dissolved | Grand Junction | 2004 |
| First Collateral, Inc | Delinquent | Norco | 2021 |
| First Reservoir LLC | Delinquent | Palmer Lake | 2014 |
| FLANAGAN WATER USERS ASSOCIATION | Administratively Dissolved | 1973 | |
| FLORIDA CANAL COMPANY | Merged | Durango | 1893 |
| FLORIDA CANAL ENLARGEMENT COMPANY | Merged | Durango | 1908 |
| FLORIDA CO-OPERATIVE DITCH COMPANY | Merged | Durango | 1910 |
| Florida Consolidated Ditch Company | Good Standing | Durango | 1889 |
| FLORIDA MESA RESERVOIR COMPANY | Exists | 1908 | |
| FOGG DITCH COMPANY | Exists | 1915 | |
| FOREIGN WATER USERS ASSOCIATION | Exists | 1952 | |
| FOREST HILLS WATER USERS ASSOCIATION, INC. | Good Standing | Colorado Springs | 1990 |
| Forked Tongue/Holman Ditch Company | Good Standing | Delta | 2011 |
| FORREST DITCH COMPANY | Exists | 1946 | |
| Fort Bent Ditch Company | Good Standing | Lamar | 2009 |
| FORT LOGAN LATERAL DITCH COMPANY | Good Standing | Denver | 1988 |
| FORT MORGAN RESERVOIR AND IRRIGATION COMPANY | Good Standing | Fort Morgan | 1983 |
| FOSSIL RESERVOIR, INC. | Voluntarily Dissolved | Ft Collins | 1994 |
| FOUNTAIN MUTUAL IRRIGATION COMPANY | Exists | 1920 | |
| FOUR CREEK DITCH COMPANY | Good Standing | Greenwood Village | 1996 |
| Four Mile Ditch Association | Delinquent | Pagosa Springs | 2018 |
| Four States Irrigation Council | Good Standing | Berthoud | 2022 |
| FOX CHASE WATER USERS ASSOCIATION | Good Standing | Wellington | 2003 |
| Fox Ridge Irrigation Association, Inc. | Good Standing | Fort Collins | 2010 |
| FOXTAIL ESTATES DITCH CO. | Good Standing | Fairplay | 1993 |
| FOY & TOMLINSON/L.L. HALL MUTUAL DITCH COMPANY | Voluntarily Dissolved | Whitewater | 1999 |
| FREE CHURCH LATERAL DITCH COMPANY | Exists | 1945 | |
| FREMONT COUNTY IRRIGATING DITCH COMPANY | Good Standing | Florence | 1884 |
| FREMONT COUNTY IRRIGATION ASSOCIATION | Voluntarily Dissolved | Canon City | 2004 |
| Fremont Pass Ditch Company | Good Standing | Aurora | 2009 |
| Fremont Pass Ditch Company | Voluntarily Dissolved | Aurora | 2009 |
| FRIENDS OF BOWLES RESERVOIR, INC. | Delinquent | Littleton | 2001 |
| Friends of Reservoir Hill | Delinquent | Pagosa Springs | 2012 |
| Friends of the Reservoir, LLC | Good Standing | Boulder | 2021 |
| FRUIT GROWERS DITCH AND RESERVOIR COMPANY | Exists | 1898 | |
| FRUIT RIDGE DITCH COMPANY | Exists | 1915 | |
| Fruitvale Lateral 180 & 185 Inc. | Good Standing | Grand Junction | 1970 |
| FRUITVALE LATERAL AND WASTE DITCH ASSOCIATION | Good Standing | Grand Junction | 1910 |
| FRUITWOOD SUBDIVISION FILING NO. 8 WATER USERS ASSOCIATION | Administratively Dissolved | Grand Junction | 1978 |
| FULTON EXTENSION DITCH COMPANY | Good Standing | Lakewood | 2002 |
| FULTON IRRIGATING DITCH COMPANY | Good Standing | Brighton | 1876 |
| FULTON SEEPAGE DITCH COMPANY | Exists | 1910 | |
| Gabino Ditch | Good Standing | La Jara | 2026 |
| GALE LATERAL COMPANY | Good Standing | Eaton | 1947 |
| Gallatin Canal Ranch, LLC | Voluntarily Dissolved | Denver | 2021 |
| GARCIA DITCH COMPANY | Delinquent | Walsenburg | 1950 |
| GARCIA DOMESTIC WATER USERS ASSOCIATION INC. | Good Standing | San Luis | 1965 |
| GARD LATERAL DITCH COMPANY | Exists | Johnstown | 1904 |
| GARDENERS DITCH LAND DEVELOPMENT COMPANY | Administratively Dissolved | Greenwood Village | 1987 |
| GARDENERS' MUTUAL DITCH COMPANY | Good Standing | Denver | 1915 |
| Gardner Park Mutual Reservoir Company | Good Standing | Yampa | 2023 |
| GARFIELD HEIGHTS MUTUAL DITCH & RESERVOIR COMPANY | Exists | 1923 | |
| GARNET DITCH AND RESERVOIR COMPANY | Exists | 1902 | |
| GARNET LATERAL DITCH | Exists | 1923 | |
| GARRIGUES LATERAL COMPANY | Good Standing | Fort Morgan | 1922 |
| GENEVA CREEK RESERVOIR COMPANY | Administratively Dissolved | 1990 | |
| Geoff's Ditch LLC | Delinquent | Greeley | 2009 |
| GERMAN DITCH AND RESERVOIR COMPANY | Exists | 1886 | |
| GIANINETTI SUBDIVISION DITCH COMPANY | Exists | Carbondale | 1990 |
| GIBRALTER DITCH COMPANY | Exists | 1955 | |
| GILCREST LATERAL COMPANY | Exists | 1922 | |
| Gilcrest Reservoir, L.L.C. | Voluntarily Dissolved | Greenwood Village | 2008 |
| GIPE DITCH COMPANY | Exists | 1963 | |
| GLADE PARK PIPELINE WATER USERS ASSOCIATION | Good Standing | Glade Park | 1994 |
| Glade Reservoir Constructors, LLC | Voluntarily Dissolved | Englewood | 2026 |
| GLEN CREIGHTON MUTUAL DITCH AND RESERVOIR COMPANY | Exists | 1923 | |
| GLEN LATERAL #490 IRRIGATION CORP. | Good Standing | Fruita | 2000 |
| GLENALLEN ESTATES IRRIGATION CO., INC. | Good Standing | Loveland | 1985 |
| GLENWOOD DITCH LLC | Voluntarily Dissolved | Glenwood Springs | 1996 |
| GMDD DITCH COMPANY | Voluntarily Dissolved | Pueblo | 2001 |
| GOLD CREEK WATER USERS' ASSOCIATION | Administratively Dissolved | 1987 | |
| GONZALES DITCH COMPANY | Exists | 1923 | |
| GOOD ENOUGH RESERVOIR COMPANY | Exists | 1924 | |
| Good Faith Water Users Association Inc. Reinstated 2008 | Voluntarily Dissolved | Durango | 2006 |
| GOOD FAITH WATER USERS ASSOCIATION INC. | Delinquent | Durango | 2003 |
| GOOD LATERAL CO. | Delinquent | Lucerne | 1984 |
| GOODALE MUTUAL DITCH COMPANY | Exists | 1920 | |
| GORE LATERAL CO. | Exists | 1951 | |
| GRABLE LATERAL ASSOCIATION | Exists | 1949 | |
| GRABLE LATERAL COMPANY | Exists | 1929 | |
| GRAHAM DITCH COMPANY | Exists | 1884 | |
| GRAHAM DRAINAGE DITCH COMPANY | Exists | 1908 | |
| GRAHAM LATERAL COMPANY (MORGAN CO) | Exists | 1919 | |
| GRAHAM LATERAL, INC. | Good Standing | Eaton | 1948 |
| GRANBY DITCH AND RESERVOIR COMPANY | Delinquent | 1894 | |
| GRAND CANAL DEVELOPMENT CO. | Voluntarily Dissolved | Englewood | 1997 |
| Grand County Mutual Ditch and Reservoir Company | Good Standing | Hot Sulphur Springs | 2008 |
| GRAND MESA RESERVOIR COMPANY | Exists | 1902 | |
| GRAND MESA WATER USERS' ASSOCIATION | Good Standing | Cedaredge | 1952 |
| GRAND RIVER DITCH COMPANY | Exists | 1917 | |
| GRAND VALLEY IRRIGATION COMPANY | Good Standing | Grand Junction | 1894 |
| GRAND VALLEY IRRIGATION COMPANY SHAREHOLDER/OWNERS | Good Standing | Grand Junction | 1986 |
| GRAND VIEW CANAL IRRIGATION COMPANY | Good Standing | Crawford | 1922 |
| GRAND VIEW IRRIGATION COMPANY | Good Standing | Canon City | 1904 |
| GRANT DITCH COMPANY | Exists | 1902 | |
| GRANT RESERVOIR COMPANY | Good Standing | Evergreen | 1975 |
| Graphical Reservoir Modeling Corp. | Delinquent | Parker | 2008 |
| GRAY LATERAL DITCH COMPANY | Good Standing | Johnstown | 1918 |
| GREAT WESTERN RESERVOIR AND CANAL COMPANY | Exists | 1921 | |
| Greater Boulder Ditch and Reservoir Company, LLC | Good Standing | Denver | 2023 |
| Greeley Amalgamated Drainage Ditch Company, LLC | Voluntarily Dissolved | Longmont | 2011 |
| GREEN ACRES IRRIGATION COMPANY | Good Standing | Greeley | 1973 |
| GREEN DITCH COMPANY | Good Standing | Longmont | 1972 |
| Green Meadows Water & Ditch Inc. | Good Standing | Beulah | 2005 |
| GREEN VALLEY DITCH COMPANY | Exists | 1906 | |
| GREEN VALLEY ESTATES IRRIGATION CO., INC. | Good Standing | Loveland | 1972 |
| GREENWOOD HILLS MUTUAL WATER COMPANY | Exists | 1959 | |
| GREENWOOD RESERVOIR COMPANY | Exists | 1956 | |
| GRIMES-BROOKS RESERVOIR COMPANY | Delinquent | Mc Coy | 1954 |
| GROVE CREEK RESERVOIR COMPANY | Delinquent | Delta | 1988 |
| GUADALUPE MAIN DITCH COMPANY | Exists | 1881 | |
| Guadalupe Vigil Ditch | Good Standing | San Luis | 2024 |
| GUNNISON AND OHIO CREEK CANAL COMPANY | Exists | 1902 | |
| H & S Ditch Users Inc. | Good Standing | Rifle | 2021 |
| H. H. DITCH COMPANY | Good Standing | Hesperus | 1911 |
| Hadden Base Ditch Company | Delinquent | Hamilton | 2022 |
| HADLEY NUMBER TWO DITCH CO. , INC. | Good Standing | Paonia | 1999 |
| HAIRPIN LATERAL DITCH COMPANY | Exists | 1911 | |
| Haldi Ditch Company | Good Standing | Boulder | 1982 |
| HALL DITCH COMPANY | Good Standing | Molina | 1996 |
| HALLENBECK NO.2 RESERVOIR CO. | Exists | 1947 | |
| HANNAH MUTUAL DITCH COMPANY | Good Standing | Collbran | 2003 |
| HANSON RESERVOIR COMPANY | Exists | 1908 | |
| Hardscrabble No. 1 Ditch Company, a Colorado non-profit corporation | Delinquent | Florence | 2005 |
| HARDTACK DITCH COMPANY | Exists | 1923 | |
| Harman Ditch #1 Company | Good Standing | Pagosa Springs | 2020 |
| HARMONY DITCH COMPANY | Exists | 1907 | |
| HARMONY RESERVOIR RECREATION ASSOCIATION | Good Standing | Fort Collins | 1989 |
| Harriman Mutual Reservoir Company | Noncompliant | Littleton | 2004 |
| HARRIS AND REED DITCH COMPANY | Good Standing | Basalt | 1989 |
| HARRIS PARK IRRIGATION COMPANY | Voluntarily Dissolved | Westminster | 1902 |
| HARRIS RESERVOIR LLC | Voluntarily Dissolved | Glendora | 2003 |
| HARRY LATERAL EAST EXTENSION DITCH COMPANY | Voluntarily Dissolved | Fort Collins | 1948 |
| HART & KELLY LATERAL COMPANY | Exists | 1928 | |
| HARTLAND DITCH COMPANY | Exists | 1883 | |
| HARTLAND LATERAL# 2 INC. | Administratively Dissolved | 1991 | |
| Hauck Seepage Pipeline and Ditch, LLC | Good Standing | Longmont | 2026 |
| HAWKEYE LATERAL DITCH COMPANY | Good Standing | Grand Junction | 1905 |
| HAY GULCH DITCH, INC | Exists | 1954 | |
| HAY MEADOWS HOMEOWNERS AND WATER USERS ASSOCIATION, INC. | Good Standing | Dolores | 2003 |
| HAYDEN DITCH COMPANY | Exists | 1901 | |
| HAYDEN IRRIGATION DIVERSION ASSOCIATION, INC. | Delinquent | Hayden | 1999 |
| HEADGATE #45 LATERAL COMPANY | Good Standing | Grand Junction | 1998 |
| Headgate 10 Ditch Company | Delinquent | Silt | 2005 |
| HEADGATE 123 IRRIGATION WATER USER'S GROUP | Administratively Dissolved | 1995 | |
| HEADGATE 135 LATERAL, INC. | Good Standing | Grand Junction | 1988 |
| Headgate 145 Irrigation, Inc. | Voluntarily Dissolved | Grand Junction | 2018 |
| Headgate 19 Ditch Company | Good Standing | Silt | 2005 |
| Headgate 275 Grand Valley Irrigation Inc | Noncompliant | Grand Junction | 2024 |
| Headgate 396 Lateral Corporation | Good Standing | Grand Junction | 2005 |
| HEADGATE 83 DITCH INC | Delinquent | Rifle | 2004 |
| HEARTLAND COLLATERAL INCORPORATED | Administratively Dissolved | 1997 | |
| Hebditch Hardwood Flooring Inc. | Good Standing | Littleton | 2009 |
| Hebditch Hardwood Maintenance, Inc. | Delinquent | Littleton | 2018 |
| Heeney Marina at Green Mountain Reservoir | Voluntarily Dissolved | Heeney | 2009 |
| HEK Headgate #22 Lateral Ditch LLC | Delinquent | Arvada | 2010 |
| HENRY BOLEN DITCH COMPANY | Good Standing | Mancos | 2003 |
| HENRY LEE LATERAL DITCH, INC. | Exists | 1933 | |
| Hermosa Company Ditch | Good Standing | Durango | 2010 |
| Hi-Line Ditch Stuckman-Sikes Inc | Good Standing | Ignacio | 2020 |
| HIDDEN VALLEY MUTUAL WATER COMPANY | Voluntarily Dissolved | Evergreen | 1951 |
| High Country Ditch Specialists LLC | Voluntarily Dissolved | Collbran | 2005 |
| HIGH LINE CANAL COMPANY | Good Standing | Rocky Ford | 1889 |
| High Line Canal Conservancy | Good Standing | Centennial | 2016 |
| High Line Canal Partners | Voluntarily Dissolved | Aurora | 2014 |
| HIGH LINE CANAL PRESERVATION ASSOCIATION | Voluntarily Dissolved | Denver | 1990 |
| HIGH PLAINS WATER USERS ASSOCIATION, ADAMS COUNTY | Exists | 1960 | |
| Highland Canal, LLC | Voluntarily Dissolved | Aurora | 2015 |
| HIGHLAND DITCH COMPANY | Good Standing | Mead | 1874 |
| HIGHLAND LATERAL COMPANY | Exists | 1914 | |
| HIGHLAND PARK LATERAL DITCH AND DRAINAGE COMPANY | Exists | 1952 | |
| HIGHLAND VALLEY RESERVOIR AND DITCH COMPANY | Exists | 1890 | |
| HIGHLINE CANAL APARTMENTS, LLC | Administratively Dissolved | Englewood | 1999 |
| HIGHLINE CANAL PROPERTIES, LLC. | Delinquent | Greenwood Village | 2013 |
| Highline Canal Rental, inc. | Good Standing | Erie | 2026 |
| HIGHLINE DITCH & ENLARGEMENT COMPANY | Good Standing | Hotchkiss | 1906 |
| HIGHLINE LATERAL NO. 22 AND 23 ASSOCIATION, INC | Exists | 1940 | |
| HIGHLINE-BUZZARD DITCH COMPANY | Delinquent | Collbran | 1990 |
| HILL & BRUSH DITCH COMPANY | Exists | 1915 | |
| Hill Ditch Spring LLC | Delinquent | Littleton | 2004 |
| HILLCREST DITCH COMPANY | Good Standing | Grand Junction | 1946 |
| HILLSBORO CANAL LAND COMPANY | Exists | 1913 | |
| HILLSIDE IRRIGATION COMPANY | Good Standing | Grand Junction | 1980 |
| HILLSIDE LATERAL COMPANY | Exists | 1915 | |
| HILLSIDE MUTUAL WATER COMPANY | Exists | 1961 | |
| HILLTOP DITCH COMPANY | Good Standing | Grand Junction | 1981 |
| HiPoint Reservoir Imaging, LLC | Merged | Littleton | 2006 |
| HISTORIC SANDY AND BEAVER CANAL LOCK 30 LLC | Delinquent | Durango | 1996 |
| HL Canal Investors, LLC | Voluntarily Dissolved | Denver | 2022 |
| HL266 Lateral Corporation | Good Standing | Grand Junction | 2024 |
| HL555 West Irrigation Lateral, Inc. | Delinquent | Loma | 2007 |
| HODGSON DITCH OPERATING ASSOCIATION | Good Standing | Denver | 1944 |
| HOEHNE DITCH COMPANY | Good Standing | Trinidad | 1909 |
| HOLITA DITCH AND RESERVOIR COMPANY | Exists | 1940 | |
| HOLLAND DITCH COMPANY | Exists | 1897 | |
| HOLLY LATERAL DITCH COMPANY | Exists | 1910 | |
| HOLLY MUTUAL WATER COMPANY | Good Standing | Highlands Ranch | 1956 |
| HOLLY RIDGE MUTUAL WATER ASSOCIATION, INC. | Good Standing | Greenwood Village | 1977 |
| HOLY TERROR RESERVOIR AND DITCH COMPANY | Exists | 1940 | |
| HOME RANCH LATERAL COMPANY | Exists | 1901 | |
| HOME-A-WAY WATER USERS ASSOCIATION | Good Standing | Grand Lake | 1990 |
| HONDIUS WATER USERS ASSOCIATION, INC. | Good Standing | Estes Park | 1996 |
| Hondius Water Users Group, Inc | Good Standing | Estes Park | 2014 |
| Hood Canal LLC | Good Standing | Henderson | 2010 |
| Hook Reservoir Properties LLC | Good Standing | San Jose | 2021 |
| HOPE DITCH COMPANY | Good Standing | Brighton | 1993 |
| Horse Mountain Ditch Company LLC | Delinquent | Montrose | 2010 |
| Hot Spring Ditch Company | Good Standing | Steamboat Springs | 2004 |
| HOWARD DITCH COMPANY | Good Standing | Boulder | 1895 |
| HOWARD LATERAL DITCH COMPANY | Good Standing | Longmont | 1919 |
| HUDSON DITCH AND RESERVOIR COMPANY | Exists | 1889 | |
| HUERFANO-NEPESTA DITCH & RESERVOIR COMPANY | Exists | 1933 | |
| Hunter's Canal Nueromuscular Therapy, LLC | Voluntarily Dissolved | Colorado Springs | 2023 |
| HUSTON RESERVOIR COMPANY | Exists | 1924 | |
| IA Canal Drive, LLC | Good Standing | Hartland | 2024 |
| ICE Water Users | Good Standing | Whitewater | 2019 |
| Idlewild Ditch Company | Good Standing | Ridgway | 2019 |
| Idlewild Water Users Association | Good Standing | Loveland | 2019 |
| ILIFF & PLATTE VALLEY DITCH COMPANY | Exists | 1884 | |
| In-Depth Reservoir Solutions LLC | Voluntarily Dissolved | Golden | 2018 |
| INDEPENDENT BLUE DITCH COMPANY | Good Standing | Silverthorne | 2020 |
| INDEPENDENT LATERAL DITCH COMPANY | Exists | 1918 | |
| INDEPENDENT RESERVOIR COMPANY | Exists | 1905 | |
| Indian ditch/A community ditch | Good Standing | Hesperus | 2025 |
| INDIAN VILLAGE IRRIGATION COMPANY AND HOMEOWNERS'ASSOCIATION, INC. | Good Standing | Grand Junction | 1994 |
| INTEGRATED RESERVOIR MANAGEMENT, INC. | Voluntarily Dissolved | Denver | 1994 |
| Integrated Reservoir Optimization (IRO),LLC | Good Standing | Denver | 2020 |
| Integrated Reservoir Research, LLC | Good Standing | Durango | 2023 |
| INTERNATIONAL COLLATERAL INVESTMENTS LTD. LIABILITY CO. | Administratively Dissolved | Las Vegas | 1992 |
| INTERNATIONAL RESERVOIR TECHNOLOGIES, INC. | Good Standing | Lakewood | 1989 |
| International Task Force on Laterality in Sport Horses, LLC | Voluntarily Dissolved | Vacaville | 2022 |
| IRESERVOIR.COM, INC. | Good Standing | Greenwood Village | 2001 |
| IRESERVOIR.COM, INC.\, Colorado Authority Relinquished December 19, 2024 | Withdrawn | Greenwood Village | 2024 |
| IRRIGATION RESEARCH FOUNDATION | Good Standing | Yuma | 1993 |
| ISLAND DITCH COMPANY | Good Standing | Carbondale | 1997 |
| J. B. DITCH COMPANY | Exists | 1920 | |
| JACKSON LAKE RESERVOIR AND IRRIGATION COMPANY | Good Standing | Fort Morgan | 1983 |
| James Ditch Minority Shareholders Association, LLC | Good Standing | Longmont | 2009 |
| JAROSO MUTUAL DITCH COMPANY | Delinquent | 1954 | |
| JEBE RESERVOIR AND IRRIGATION COMPANY | Administratively Dissolved | Greeley | 1978 |
| JESSE DITCH CO. | Good Standing | Hotchkiss | 2001 |
| Jim Eglin Ditch Co | Good Standing | Berthoud | 2015 |
| JOHNSON AND EDWARDS DITCH COMPANY | Good Standing | Lakewood | 1979 |
| JOHNSON DITCH COMPANY | Exists | 1909 | |
| JOHNSON MUTUAL DITCH COMPANY | Good Standing | Littleton | 1999 |
| JOHNSON-WOLVERTON DITCH COMPANY | Good Standing | Rifle | 1982 |
| JONES AND DONNELLY DITCH COMPANY | Good Standing | Longmont | 1973 |
| JONES LATERAL DITCH COMPANY | Delinquent | 1900 | |
| JONES, HINMAN, REDMOND DITCH COMPANY | Voluntarily Dissolved | Yampa | 2003 |
| JOSH AMES IRRIGATION DITCH COMPANY | Exists | 1899 | |
| JRG Reservoir Engineering, LLC | Voluntarily Dissolved | Corvallis | 2017 |
| JUNIATA DITCH COMPANY | Exists | 1914 | |
| JUNIATA RESERVOIR COMPANY | Exists | 1938 | |
| JUNIATA RESERVOIR ENLARGED, INC. | Exists | 1955 | |
| KALCEVIC MUTUAL RESERVOIR ASSOCIATION | Exists | 1917 | |
| KANNAH CREEK EXTENSION DITCH #2 | Good Standing | Grand Junction | 1990 |
| KANNAH CREEK HIGHLINE DITCH COMPANY | Exists | 1908 | |
| KAREN LEE WATER USERS ASSOCIATION, INC. | Good Standing | Grand Junction | 1977 |
| Karval Water Authority DBA Karval Water Users, Inc | Good Standing | Karval | 2025 |
| KARVAL WATER USERS INC. | Good Standing | Karval | 1988 |
| KAWANEE GARDENS IRRIGATION COMPANY | Good Standing | Lakewood | 1928 |
| KELTON HEIGHTS LATERAL DITCH COMPANY | Exists | 1935 | |
| kendall reservoir company | Good Standing | Collbran | 2018 |
| Kendall Reservoir Incorporated | Delinquent | Boulder | 2006 |
| KERN LATERAL COMPANY | Exists | 1902 | |
| KERN RESERVOIR AND DITCH COMPANY | Good Standing | Windsor | 2002 |
| KERWOOD LATERAL COMPANY | Exists | 1918 | |
| KIGGINS AND SALISBURY DITCH, INC. | Good Standing | Collbran | 1951 |
| KING CENTER LATERAL ASSOCIATION | Exists | 1931 | |
| KING DITCH #6 MESA CREEK DITCH | Good Standing | Grand Junction | 1990 |
| King Reservoir Property, LLLP | Good Standing | Grand Junction | 2021 |
| Kiowa Lateral LLC | Good Standing | Colorado Springs | 2018 |
| KIRTZ DITCH COMPANY | Exists | 1944 | |
| KITCHELL RESERVOIR COMPANY | Good Standing | Fort Collins | 1915 |
| KITTY L. MCANALLY PROPERTY MANAGEMENT, INC. | Administratively Dissolved | 1992 | |
| Knouth Reservoir Corporation | Voluntarily Dissolved | Tehachapi | 2007 |
| KX 500 Lateral and Drainage Corporation | Good Standing | Loma | 2011 |
| KX4 DITCH COMPANY | Noncompliant | Loma | 1997 |
| L-J LATERAL DITCH COMPANY LLC | Voluntarily Dissolved | Bayfield | 2021 |
| La Garita Reservoir Company | Delinquent | South Fork | 2014 |
| La Garita Water Users Association LLC | Delinquent | Arvada | 2009 |
| LA JARA GARDENS IRRIGATION COMPANY | Exists | 1911 | |
| LA JARA WATER USERS' ASSOCIATION | Exists | 1924 | |
| LA PLATA RIVER AND CHERRY CREEK DITCH COMPANY | Exists | 1890 | |
| LA VEGA DITCH COMPANY | Delinquent | Lakewood | 1911 |
| LA VERDE ESTATES WATER USERS ASSOCIATION, INC. | Good Standing | Cortez | 1986 |
| LAKE CANAL COMPANY OF COLORADO | Good Standing | Severance | 1872 |
| LAKE CANAL RESERVOIR COMPANY | Good Standing | Severance | 1902 |
| LAKE CANAL SUBDIVISION OWNERS' ASSOCIATION, INC. | Good Standing | Fort Collins | 2000 |
| LAKE CREEK WATER USERS MUTUAL DITCH COMPANY | Good Standing | Cotopaxi | 1998 |
| LAKE DITCH CO | Good Standing | Longmont | 2024 |
| LAKE DITCH COMPANY | Good Standing | 1940 | |
| LAKE ERIE RESERVOIR COMPANY | Exists | 1940 | |
| LAKE FOREST MUTUAL WATER COMPANY | Good Standing | Grand Lake | 1960 |
| LAKE FORK DITCH COMPANY | Good Standing | Cedaredge | 1878 |
| LAKE IDLEWILD RESERVOIR COMPANY | Delinquent | 1908 | |
| LAKE LEE LATERAL COMPANY | Exists | 1903 | |
| LAKE MCINTOSH RESERVOIR COMPANY | Good Standing | Mead | 2001 |
| Lakeview Lateral Company | Delinquent | Crawford | 2022 |
| LAKEWOOD ACRES IRRIGATION COMPANY | Good Standing | Lakewood | 1943 |
| LAKEWOOD HEIGHTS MUTUAL WATER CO. | Good Standing | Lakewood | 1940 |
| LAKEWOOD LATERAL DITCH COMPANY | Exists | 1925 | |
| LAMAR CANAL AND IRRIGATION COMPANY | Good Standing | Lamar | 1907 |
| LAMAR MUTUAL DITCH COMPANY | Exists | 1913 | |
| LAMBORN HILLS IRRIGATION CO. | Delinquent | Paonia | 1985 |
| LARIAT IRRIGATION COMPANY | Good Standing | Monte Vista | 1908 |
| LARIMER AND WELD RESERVOIR COMPANY | Good Standing | Eaton | 1890 |
| LARIMER COUNTY UNDERGROUND WATER USERS ASSOCIATION | Good Standing | Severance | 1974 |
| LARKIN IRRIGATION COMPANY | Good Standing | De Beque | 1896 |
| LAS ANIMAS DITCH COMPANY | Exists | 1899 | |
| LAST CHANCE DITCH COMPANY | Good Standing | Longmont | 1872 |
| Last Ditch ATV LLC | Delinquent | Aurora | 2017 |
| Last Ditch Diagnostics, LLC | Voluntarily Dissolved | Laramie | 2014 |
| Last Ditch Effort LLC | Good Standing | Parker | 2024 |
| LAST DITCH, LLC | Good Standing | Louisville | 2002 |
| Lateral #77 LLC | Delinquent | Wheat Ridge | 2015 |
| lateral 30 | Good Standing | Palisade | 2016 |
| LATERAL 35 ASSOCIATION | Good Standing | Grand Junction | 1951 |
| Lateral 82 Corporation | Good Standing | Silt | 2019 |
| LATERAL ACCESS, INCORPORATED | Administratively Dissolved | 2001 | |
| Lateral Auto Exchange, Inc | Delinquent | Owings Mills | 2012 |
| Lateral B Shroeder Ditch Assoc, LCA | Good Standing | Bayfield | 2012 |
| Lateral Ditch ML47, Inc. | Good Standing | Clifton | 2011 |
| Lateral Drops LLC | Voluntarily Dissolved | Lakewood | 2023 |
| LATERAL ENERGY MANAGEMENT INC | Delinquent | Denver | 2024 |
| Lateral Energy, LLC | Good Standing | Grand Lake | 2013 |
| Lateral Enterprise, LLC | Delinquent | Ouray | 2009 |
| Lateral G Enterprises | Delinquent | Denver | 2006 |
| Lateral Imagery LLC | Delinquent | Eagle | 2013 |
| LATERAL INTERNATIONAL LLC | Good Standing | Cambridge | 2010 |
| Lateral Landslide, LLC | Delinquent | Englewood | 2010 |
| Lateral Line LLC | Delinquent | Lafayette | 2015 |
| Lateral Line Media LLC | Voluntarily Dissolved | Denver | 2011 |
| Lateral Lines, Inc. | Delinquent | Grand Junction | 2008 |
| LATERAL LINK GROUP, INC. | Good Standing | Los Angeles | 2016 |
| LATERAL NO 77 LLC | Good Standing | Wheat Ridge | 2017 |
| LATERAL RESERVOIR STIMULATION, LLC | Voluntarily Dissolved | Centennial | 2004 |
| LATERAL SOLUTIONS CORPORATION | Voluntarily Dissolved | Colorado Springs | 1997 |
| Lateral Solutions, LLC | Delinquent | Castle Rock | 2006 |
| Lateral Think LLC | Good Standing | Longmont | 2026 |
| Lateral-X LLC | Delinquent | Silt | 2023 |
| Lateralus 235 LLC | Good Standing | Denver | 2024 |
| Lateralus Holdings, LLC | Good Standing | Denver | 2019 |
| Lateralus Inc | Delinquent | Springville | 2012 |
| Lateralus Investments LLC | Delinquent | Broomfield | 2004 |
| LATERALUS LLC | Good Standing | Colorado Springs | 2024 |
| Lateralus Photography LLC | Voluntarily Dissolved | Aurora | 2019 |
| Layton Lateral Ditch Company | Good Standing | Fort Morgan | 2009 |
| LCC Canal Street LLC | Good Standing | Greenwich | 2024 |
| LEBANON ESTATES WATER USERS ASSOCIATION, INC. | Good Standing | Cortez | 2006 |
| LEE & BAUGH DITCH COMPANY | Good Standing | Golden | 2003 |
| LEFT HAND DITCH COMPANY | Good Standing | Boulder | 1890 |
| Legacy Ditch Association | Voluntarily Dissolved | La Salle | 2012 |
| LEGGETT DITCH AND RESERVOIR COMPANY | Good Standing | Longmont | 1897 |
| Lemon Lateral Pipeline Co | Delinquent | Crawford | 2010 |
| LENOCKER LATERAL COMPANY | Delinquent | 1920 | |
| LEON LAKE DITCH AND RESERVOIR COMPANY | Good Standing | Cedaredge | 1900 |
| LEON PARK RESERVOIR COMPANY | Good Standing | Cedaredge | 1910 |
| LEROUX CREEK WATER USERS' ASSOCIATION | Exists | 1948 | |
| LEROUX DITCH AND ENLARGEMENT COMPANY | Exists | 1903 | |
| Levey Lateral Ditch Association, LLC | Good Standing | Ignacio | 2025 |
| LEWELLING MCCORMICK DITCH COMPANY | Exists | 1943 | |
| LEYNER-COTTONWOOD CONSOLIDATED DITCH CO. | Good Standing | Erie | 1900 |
| LIDDLE DITCH CO. | Delinquent | Ovid | 1974 |
| LIGHTBURN LATERAL COMPANY | Exists | 1923 | |
| LILYLANDS CANAL AND RESERVOIR COMPANY | Exists | 1906 | |
| LINCOLN PARK CROOKED DITCH COMPANY | Exists | 1891 | |
| LINCOLN PARK PUMP DITCH COMPANY | Exists | 1891 | |
| LITTLE ALFALFA DITCH COMPANY | Exists | 1937 | |
| Little Ditch 1, LLC | Good Standing | Chicago | 2022 |
| Little Ditch 2, LLC | Good Standing | Chicago | 2022 |
| Little Ditch TDR, LLC | Good Standing | Chicago | 2022 |
| LITTLE ELK CREEK DITCH COMPANY | Good Standing | Snowmass | 1982 |
| LITTLE STICK DITCH COMPANY, INC. | Good Standing | Hesperus | 1999 |
| LITTLE TRIO WATER USERS ASSOCIATION, INC. | Good Standing | Grand Junction | 1978 |
| LODGE POLE LAKE RESERVOIR CO. | Exists | 1997 | |
| LOGAN COUNTY WATER USERS ASSOCIATION | Good Standing | Sterling | 2000 |
| LOLOFF LATERAL DITCH COMPANY | Delinquent | 1916 | |
| LOMA DITCH AND LATERAL COMPANY | Exists | 1911 | |
| Loma Linda Ditch LLC | Delinquent | Durango | 2022 |
| LOMA PADRA-ARCHULETA DITCH COMPANY | Exists | 1923 | |
| LOMA RIO WATER USERS ASSOCIATION, INC. | Good Standing | Grand Junction | 1978 |
| LONE STAR DITCHES COMPANY | Exists | 1924 | |
| LONE TREE DITCH AND LATERAL COMPANY | Good Standing | Greeley | 1882 |
| LONE TREE LATERAL COMPANY | Exists | 1925 | |
| LONG BRANCH LATERAL DITCH & RESERVOIR COMPANY | Exists | 1922 | |
| LONG ISLAND DITCH COMPANY | Exists | 1940 | |
| LONG LAKE RESERVOIRS INC. | Exists | 1931 | |
| LONGMONT RESERVOIR LLC | Voluntarily Dissolved | Englewood | 1998 |
| LOS PINOS DITCH COMPANY | Exists | 1911 | |
| LOS PINOS IRRIGATING DITCH COMPANY | Good Standing | Bayfield | 1960 |
| LOS RINCONES DITCH COMPANY | Exists | 1883 | |
| LOUDEN EXTENSION CANAL AND RESERVOIR COMPANY | Good Standing | Fort Collins | 1921 |
| LOUP RESERVOIR COMPANY | Good Standing | Greeley | 1904 |
| Loveland Ditch LLC | Voluntarily Dissolved | Denver | 2005 |
| LOVELAND DRAIN AND DITCH COMPANY | Exists | 1921 | |
| LOW LINE DITCH COMPANY | Exists | 1884 | |
| Lower Arkansas Valley Super Ditch Company | Good Standing | Rocky Ford | 2008 |
| Lower Arkansas Valley Super Ditch Pilot Program | Good Standing | Rocky Ford | 2012 |
| Lower Bauer West Lateral, Inc | Good Standing | Mancos | 2004 |
| LOWER BEAVER CREEK DITCH COMPANY | Exists | 1915 | |
| LOWER BOULDER EXTENSION RESERVOIR COMPANY | Exists | 1891 | |
| LOWER CLEAR CREEK DITCH COMPANY | Good Standing | Thornton | 1871 |
| LOWER KELSO DITCH CO. | Delinquent | Carbondale | 1973 |
| LOWER LATHAM EXTENSION DITCH COMPANY | Good Standing | Greeley | 1888 |
| Lower Lone Pine Ditch Association, LLC | Good Standing | Cortez | 2020 |
| LOWER OLIGARCHY DITCH COMPANY | Good Standing | Longmont | 1892 |
| Lower Wilson Ditch Association LLC | Good Standing | Cortez | 2014 |
| LOWLAND OVERFLOW DITCH COMPANY | Exists | 1911 | |
| Lowline Irrigation Ditch Mutual Ditch Association | Good Standing | Almont | 2026 |
| LUCERO DITCH COMPANY | Exists | 1958 | |
| Luchini Lateral Ditch Users Association | Good Standing | Ignacio | 2004 |
| LYCANAL INC | Voluntarily Dissolved | Centennial | 2021 |
| Lyn Street Subdivision Water Users | Good Standing | Grand Junction | 2019 |
| LYONS DITCH COMPANY | Good Standing | Lyons | 1952 |
| M.BAKER LATERAL COMPANY | Exists | 1946 | |
| MANASSA DITCH COMPANY | Exists | 1883 | |
| MANASSA LAND AND IRRIGATION COMPANY | Delinquent | Manassa | 1903 |
| MANCOS VALLEY BEAVER DITCH COMPANY | Good Standing | Mancos | 2003 |
| MANDALAY IRRIGATION COMPANY | Voluntarily Dissolved | Boulder | 1923 |
| MANHART DITCH COMPANY | Exists | 1928 | |
| MARCOT PARK DITCH AND RESERVOIR COMPANY | Exists | 1905 | |
| MARSH LATERAL COMPANY | Exists | 1917 | |
| MARSHALLVILLE DITCH CO. | Good Standing | Boulder | 1938 |
| MARTIN LATERAL DITCH COMPANY, INC. | Good Standing | Ignacio | 1987 |
| MARTINEZ DITCH COMPANY | Delinquent | 1923 | |
| MASONVILLE UNION DITCH AND RESERVOIR COMPANY | Good Standing | Loveland | 1912 |
| MAYBELL MUTUAL DITCH COMPANY | Exists | 1922 | |
| MAYHAM RESERVOIR CORPORATION | Good Standing | Conroe | 1980 |
| MBS DITCH ROAD, INC., Colorado Authority Relinquished May 3, 2021 | Withdrawn | Indianapolis | 2003 |
| MC 50 Lateral Company | Good Standing | Grand Junction | 2004 |
| MC MAHON NO. 2 RESERVOIR COMPANY | Good Standing | North Garden | 1949 |
| McAnally , LLC | Voluntarily Dissolved | Craig | 2010 |
| MCANALLY AND ASSOCIATES, INC. | Administratively Dissolved | Englewood | 1980 |
| McAnally Company, LLC | Voluntarily Dissolved | Craig | 2006 |
| McAnally Wilkins, LLC | Good Standing | Irvine | 2015 |
| MCCANNE DITCH AND RESERVOIR COMPANY | Voluntarily Dissolved | Brighton | 1894 |
| MCCLELLAN RESERVOIR COMPANY | Exists | 1922 | |
| McCreery Lateral Company | Good Standing | Fort Morgan | 2010 |
| MCDONALD DITCH COMPANY | Exists | 1921 | |
| MCDONALD DITCH IRRIGATION COMPANY | Good Standing | Montrose | 1939 |
| McElmo Canyon Mutual Ditch and Reservoir Company | Good Standing | Cortez | 2019 |
| MCFARLAND ESTATES WATER USERS ASSOCIATION | Good Standing | Grand Junction | 1980 |
| MCGINN DITCH COMPANY | Good Standing | Longmont | 1871 |
| MCKAY LATERAL DITCH COMPANY | Good Standing | Longmont | 1928 |
| MCWHORTER IRRIGATION SYSTEM, INC. | Administratively Dissolved | Mack | 1999 |
| MEAD LATERAL COMPANY | Good Standing | Ault | 1929 |
| Meadow Ditch Company | Good Standing | Lyons | 1992 |
| Meadow Glen Ditch LLC | Good Standing | Del Norte | 2015 |
| MEADOW ISLAND IRRIGATION COMPANY | Exists | 1901 | |
| Meadowlark Acres Water Users Association | Good Standing | Clifton | 2025 |
| MEADOWVIEW MUTUAL RESERVOIR COMPANY | Delinquent | Denver | 1999 |
| MECITAS DITCH COMPANY | Exists | 1923 | |
| MEDVED DITCH PROPERTIES, INC. | Voluntarily Dissolved | Bloomfield Hills | 1994 |
| MESA CREEK DITCH CO 2 | Good Standing | Molina | 2012 |
| MESA CREEK RESERVOIR AND CANAL COMPANY | Good Standing | Grand Junction | 1891 |
| MESA DITCH COMPANY | Good Standing | Pagosa Springs | 1982 |
| Meses y Company Ditch Association | Delinquent | Pueblo | 2008 |
| Michael Canale, LLC | Voluntarily Dissolved | Englewood | 2020 |
| MICHAUD LANE WATER USERS ASSOCIATION | Exists | 1953 | |
| MIDDLE ARKANSAS GROUNDWATER USERS ASSOCIATION | Good Standing | Fowler | 1999 |
| MIDDLE PARK WATER USERS PROTECTIVE ASSOCIATION | Exists | 1949 | |
| MIDLAND DITCH COMPANY | Exists | 1887 | |
| midnight collateral recovery | Delinquent | Fort Collins | 2005 |
| Midnight Oil Reservoir Engineering, LLC | Good Standing | Littleton | 2022 |
| Mile High Quidditch Club | Good Standing | Thornton | 2022 |
| MILES LATERAL COMPANY | Delinquent | 1908 | |
| MILITARY PARK RESERVOIR COMPANY | Good Standing | Cedaredge | 1905 |
| MILLER CREEK DITCH COMPANY | Good Standing | Meeker | 1961 |
| MILLER DITCH COMPANY | Exists | 1908 | |
| MILTON WATER USERS ASSOCIATION | Exists | 1956 | |
| MINERAL FARMS WATER USERS, INC. | Good Standing | Ouray | 2007 |
| Minnesota Canal Diversion Nine Inc. | Good Standing | Paonia | 2022 |
| MINNESOTA CANAL EXTENSION COMPANY | Exists | 1897 | |
| Minnesota L75 Lateral Company | Good Standing | Paonia | 2015 |
| MINNESOTA LATERAL PIPELINE, INC. | Good Standing | Paonia | 1979 |
| MISSOURI HEIGHTS - MOUNTAIN MEADOWS IRRIGATION COMPANY | Good Standing | Carbondale | 1999 |
| MISSOURI HEIGHTS IRRIGATION COMPANY | Consolidated | Glenwood Springs | 1949 |
| MISSOURI PARK DITCH COMPANY | Exists | 1882 | |
| MITCHELL-COOPER DITCH AND PIPELINE COMPANY | Good Standing | Glenwood Springs | 1954 |
| ML 405 LATERAL USERS ASSOCIATION | Delinquent | Fruita | 2003 |
| ML510 IRRIGATION LATERAL, INC. | Delinquent | Fruita | 1997 |
| MODEL WATER USERS ASSOCIATION | Good Standing | Model | 1957 |
| MOGOTE NORTHEASTERN CONSOLIDATED DITCH COMPANY | Delinquent | 1910 | |
| MONARCH DITCH COMPANY | Delinquent | Carbondale | 2001 |
| Monroeville Water Users Association | Good Standing | Grand Junction | 1980 |
| Montez Ditch Acequia, Inc. | Good Standing | San Luis | 2015 |
| MONTEZUMA VALLEY IRRIGATION COMPANY | Good Standing | Cortez | 1920 |
| Montgomery Lateral Ditch Company | Good Standing | Eaton | 2006 |
| MONUMENT RESERVOIR COMPANY | Administratively Dissolved | Collbran | 1956 |
| MONUMENT VILLAGE COMBINED IRRIGATION COMPANY | Good Standing | Grand Junction | 1999 |
| Moonlight Ditch Association | Good Standing | Dolores | 2009 |
| MOORE DITCH AND RESERVOIR COMPANY | Exists | 1907 | |
| MORGAN DITCH COMPANY | Exists | 1895 | |
| MORIN MUTUAL DITCH COMPANY | Exists | 1916 | |
| MORMAN MESA DITCH COMPANY | Delinquent | Molina | 1920 |
| MORRISON CONSOLIDATED DITCH COMPANY | Good Standing | Ignacio | 1910 |
| MORRISON LATERAL DITCH COMPANY | Exists | 1902 | |
| MOUNTAIN MEADOW DITCH AND IRRIGATION COMPANY | Consolidated | Carbondale | 1995 |
| MOUNTAIN MUTUAL RESERVOIR COMPANY | Good Standing | Evergreen | 1980 |
| Mountain Mutual Water Augmentation Company | Good Standing | Lake George | 2012 |
| MOUNTAIN MUTUAL WATER COMPANY | Good Standing | Cripple Creek | 1973 |
| MOUNTAIN VIEW ESTATES IRRIGATION ASSOCIATION | Good Standing | Longmont | 1996 |
| Mountain View South Fire Suppression & Irrigation Association | Good Standing | Delta | 2023 |
| MOUNTAIN VIEW WATER AND DITCH, INC. | Good Standing | Beulah | 2000 |
| MOUNTAIN VIEW WATER USERS ASSOCIATION, ADAMS COUNT | Good Standing | Brighton | 1981 |
| MT. VIEW WATER USERS ASSOCIATION | Exists | 1956 | |
| MTS Collateral, Inc. | Delinquent | Lakewood | 2005 |
| MUDDY CREEK DITCH COMPANY, INC. | Delinquent | Telluride | 1996 |
| MULTILATERAL PARTNERS WINDSOR L.P. | Exists | La Jolla | 2006 |
| MUNICIPAL WATER USERS LIMITED LIABILITY COMPANY | Delinquent | Aurora | 1992 |
| MUNN ADDITION LATERAL DITCH AND WATER COMPANY | Exists | 1918 | |
| MUNSON DITCHING, INC. | Delinquent | Colorado Springs | 1997 |
| Murdie Mesa Ditch Mutual Ditch Association | Good Standing | Gunnison | 2025 |
| MUSKRAT LATERAL DITCH COMPANY | Exists | 1935 | |
| MUTUAL CAREY DITCH AND RESERVOIR COMPANY | Exists | 1925 | |
| Mutual Ditch Management Company, LLC | Good Standing | Severance | 2018 |
| MUTUAL LATERAL IRRIGATION COMPANY | Good Standing | Fort Morgan | 1894 |
| N. S. LATERAL NUMBER FIVE COMPANY | Exists | 1913 | |
| Naiditch & Naiditch, LLC | Voluntarily Dissolved | Boulder | 2015 |
| NATIONAL COLLATERAL MANAGEMENT INC, Colorado Authority Relinquished August 30, 2010 | Withdrawn | Richland | 2002 |
| NATURITA CANAL AND RESERVOIR COMPANY | Exists | 1887 | |
| NAUGLE LATERAL DITCH COMPANY | Exists | 1919 | |
| NAVAJO DIVERSION DITCH | Exists | 1956 | |
| NAVAJO RIVER RANCH DITCH COMPANY | Good Standing | Chromo | 1997 |
| NAZARENUS LATERAL DITCH COMPANY | Exists | 1916 | |
| NEEDHAM DITCH COMPANY | Good Standing | Carbondale | 1966 |
| NEEDLE CREEK RESERVOIR ASSOCIATION | Good Standing | Gunnison | 1962 |
| NELSON LATERAL DITCH COMPANY | Exists | 1931 | |
| NEUMEISTER LATERAL DITCH COMPANY | Exists | 1902 | |
| NEW BRANTNER EXTENSION DITCH COMPANY | Good Standing | Brighton | 1904 |
| NEW BRIGHTON LATERAL LLC | Good Standing | Greenwood Village | 2002 |
| New Cenicero Ditch Company | Delinquent | Antonito | 2008 |
| NEW CENICERO DITCH COMPANY | Delinquent | 1904 | |
| NEW COAL RIDGE DITCH COMPANY | Good Standing | Longmont | 1996 |
| NEW CONSOLIDATED LOWER BOULDER RESERVOIR AND DITCH COMPANY | Good Standing | Longmont | 1996 |
| NEW DRY CREEK DITCH COMPANY | Exists | 1952 | |
| NEW JOHN FLOOD DITCH COMPANY | Exists | Trinidad | 2001 |
| NEW MULTA TRINA DITCH COMPANY | Good Standing | Silt | 1935 |
| NEW RED TOP VALLEY DITCH COMPANY | Good Standing | Granby | 1927 |
| NEW SALIDA DITCH COMPANY | Exists | 1953 | |
| NEW TABLE MOUNTAIN DITCH COMPANY | Good Standing | Longmont | 1891 |
| NEW UNION COMMUNITY DITCH COMPANY | Voluntarily Dissolved | Thornton | 1909 |
| New Union Ditch Company | Good Standing | La Jara | 2025 |
| NEWTON GULCH RESERVOIR CO.,INC. | Exists | 1958 | |
| Nickell Ditch Company | Good Standing | Steamboat Springs | 2024 |
| Nieghborhood Irrigation Water | Delinquent | Grand Junction | 2010 |
| NINE MILE CANAL COMPANY | Exists | 1911 | |
| NIWOT DITCH COMPANY | Good Standing | Longmont | 1906 |
| NIWOT DITCH COMPANY | Voluntarily Dissolved | 1866 | |
| NIWOT WATER USERS ASSOCIATION | Exists | 1961 | |
| NO. 10 DITCH COMPANY | Good Standing | Fort Collins | 1903 |
| NO. 280 LATERAL DITCH COMPANY | Delinquent | Lakewood | 1967 |
| No. 3 Bijou Lateral Company | Good Standing | Fort Morgan | 2010 |
| NO. 3 OUTLET DITCH COMPANY | Good Standing | Longmont | 1892 |
| NORTH BOULDER FARMERS DITCH COMPANY | Good Standing | Boulder | 1871 |
| NORTH DELTA HOOSIER LATERAL, INC. | Administratively Dissolved | 1989 | |
| North Fork Ditch Company | Good Standing | Salida | 2016 |
| NORTH HENRY LEE RESERVOIR IMPROVEMENT CORPORATION | Good Standing | Wheat Ridge | 1981 |
| NORTH LA JUNTA CANAL COMPANY | Exists | 1896 | |
| NORTH LATERAL COMPANY | Exists | 1935 | |
| NORTH LATERAL, INC. | Exists | 1951 | |
| NORTH MEADOW HOMEOWNERS AND WATER USERS ASSOCIATION, INC. | Administratively Dissolved | 1977 | |
| NORTH MESA DITCH AND RESERVOIR COMPANY | Exists | 1918 | |
| NORTH PAWNEE LATERAL DITCH COMPANY | Exists | 1895 | |
| NORTH POUDRE IRRIGATION COMPANY, LOWER DITCH #10, HEADGATE #9 IRRIGATORS' ASSOCIATION LLC | Voluntarily Dissolved | Fort Collins | 2014 |
| North Poudre Reservoir #4 Landowners Association | Delinquent | Wellington | 2015 |
| North Star Irrigation Company | Good Standing | Fort Collins | 2010 |
| NORTH STERLING LATERAL NUMBER SEVEN COMPANY | Exists | 1923 | |
| NORTH WASHINGTON WATER USERS ASSOCIATION, ADAMS COUNTY | Good Standing | Brighton | 2002 |
| NORTHCRESTONE COMMUNITY DITCH INC. | Administratively Dissolved | Crestone | 2002 |
| Northeast Water Users Association | Exists | Center | 2013 |
| NORVELL DITCH COMPANY | Delinquent | Yampa | 2002 |
| Nothwast Water Users Association | Delinquent | Denver | 2014 |
| Nowhere Road Water Users Company | Good Standing | Eckert | 2017 |
| NUMBER 46 LATERAL COMPANY | Exists | 1928 | |
| NUMBER 47 LATERAL COMPANY | Exists | 1922 | |
| NUMBER SEVEN LATERAL | Exists | 1922 | |
| NUNN-MCGREW DITCH COMPANY | Exists | 1923 | |
| NYBERG DITCH AND RESERVOIR COMPANY | Exists | 1913 | |
| O. K. LATERAL COMPANY | Exists | 1917 | |
| OAK MESA DITCH AND RESERVOIR COMPANY | Delinquent | Hotchkiss | 1940 |
| OBJECT RESERVOIR, INC. | Delinquent | Austin | 1997 |
| OKLAHOMA IRRIGATION COMPANY | Exists | 1910 | |
| OLD BOND WATER USERS ASSOCIATION INC. | Delinquent | Lakewood | 2001 |
| Old Brantner Ditch Company | Voluntarily Dissolved | Brighton | 2010 |
| OLD CANAL FINANCIAL CORPORATION | Delinquent | Yorba Linda | 2005 |
| Old Reservoir, LLC | Good Standing | Norwood | 2023 |
| OLIGARCHY AND LONGMONT BRANCH DITCH COMPANY | Exists | 1915 | |
| OLIVER DITCH COMPANY | Exists | 1925 | |
| OLSEN MUTUAL DITCH COMPANY | Good Standing | Greeley | 1972 |
| One Highline Canal LLC | Voluntarily Dissolved | Centennial | 2006 |
| Oplinger Reservation Irrigation Co. | Good Standing | Grand Junction | 2012 |
| Opulent Golditch LLC | Delinquent | Aurora | 2020 |
| ORANGE STREET DITCH COMPANY | Exists | 1887 | |
| Orchard City Domestic Water Users Association No. 1 | Good Standing | Cedaredge | 2012 |
| Orchard Mesa Heights Irrigation Ditch Co. | Good Standing | Grand Junction | 2008 |
| ORCHARD MESA MUTUAL WASTE DITCH COMPANY | Exists | 1916 | |
| ORCHARD PARK WATER USERS ASSOCIATION | Good Standing | Boone | 1995 |
| ORCHARD RANCH DITCH COMPANY | Good Standing | Eckert | 1915 |
| ORDWAY LATERAL ASSOCIATION | Exists | 1933 | |
| ORDWAY-ROCKY FORD MUTUAL CANAL AND RESERVOIR CO | Exists | 1913 | |
| OSBORN AND CAYWOOD DITCH | Good Standing | Eaton | 1970 |
| OSBORN LATERAL DITCH COMPANY | Good Standing | Longmont | 1916 |
| OTERO DITCH CO. | Good Standing | Rocky Ford | 1954 |
| OULETTE DITCH COMPANY | Good Standing | Wheat Ridge | 1977 |
| Ouray County Water Users Association | Good Standing | Montrose | 2013 |
| OURAY DITCH COMPANY | Delinquent | 1893 | |
| Ouray Mutual Ditch Company | Good Standing | Salida | 2016 |
| OVERLOOK MUTUAL WATER COMPANY | Exists | 1947 | |
| OWL CREEK RESERVOIR COMPANY | Good Standing | Fort Collins | 1986 |
| OX BOW WATER USERS ASSOCIATION, INC. | Good Standing | Grand Junction | 1977 |
| OXBOW NORTH WATER USERS ASSOCIATION | Good Standing | Grand Junction | 1997 |
| OXBOW WEST WATER USERS ASSOCIATION | Good Standing | Grand Junction | 1981 |
| OXFORD LATERAL DITCH, INC. | Good Standing | Ignacio | 1993 |
| Palisade Irrigation Pipes & Laterals | Good Standing | Palisade | 2009 |
| PALLAORO WATER USERS ASSOCIATION | Delinquent | Brighton | 1996 |
| Palmer Lateral Ditch | Good Standing | Fruita | 2024 |
| PALOMINO ACRES DITCH AND WATER COMPANY | Good Standing | Montrose | 1976 |
| PANORAMA PARK MUTUAL WATER ASSOCIATION | Administratively Dissolved | 1965 | |
| Paradox Valley Canal & Reservoir Co. | Good Standing | Paradox | 2008 |
| PARK DITCH AND RESERVOIR COMPANY | Good Standing | Carbondale | 1931 |
| PARK DITCH COMPANY | Good Standing | Pagosa Springs | 1989 |
| PARK RESERVOIR COMPANY | Good Standing | Cedaredge | 1896 |
| PATRICK/BENNETT RESERVOIR COMPANY | Good Standing | Littleton | 2002 |
| PC RESERVOIR, LLC | Delinquent | Colorado Springs | 2008 |
| Peabody Trout Creek Reservoir LLC, Colorado Authority Relinquished April 3, 2017 | Withdrawn | St. Louis | 2012 |
| Peaceful Mountain Water Users Association, Inc. | Delinquent | Evergreen | 2006 |
| Peaceful Valley Water Users Association | Good Standing | Longmont | 2021 |
| Peach Street Ditch Company | Delinquent | Fruita | 2019 |
| PECK DITCH COMPANY | Good Standing | Longmont | 1926 |
| Peery Ditch Company | Good Standing | Wellington | 2015 |
| PELLA DITCH COMPANY | Good Standing | Longmont | 1903 |
| Penley Reservoir Development Company, LLC | Good Standing | Englewood | 2012 |
| Peppler Lateral Group, LLC | Delinquent | Longmont | 2006 |
| PETERSON CANAL AND RESERVOIR COMPANY | Exists | 1895 | |
| PETERSON,MCANALLY & TABOR INSURANCE AGENCY,INC | Delinquent | Hemet | 1998 |
| Phoenix Collateral Advisors, LLC | Good Standing | Denver | 2007 |
| Phoenix Reservoir, LLC | Voluntarily Dissolved | Denver | 2015 |
| Piedra Falls Ditch Company | Good Standing | Southlake | 1953 |
| PIERCE LATERAL COMPANY | Exists | 1926 | |
| Pilot Rock Ditch Company | Good Standing | Crawford | 2019 |
| PINE RIDGE DITCH COMPANY | Good Standing | Hesperus | 1898 |
| PINE RIVER SOUTHWESTERN DITCH COMPANY | Good Standing | Ignacio | 1952 |
| PINNACLE PARK IRRIGATION COMPANY | Good Standing | Greeley | 1989 |
| PINON DITCH COMPANY | Exists | 1927 | |
| Pinon Hills Water Users Association, LLC | Delinquent | Walsenburg | 2017 |
| PINON MESA DITCH COMPANY | Exists | 1916 | |
| PINYON MUTUAL WATER COMPANY | Exists | 1956 | |
| PIONEER WATER & IRRIGATION, INC. | Good Standing | Ft Morgan | 1982 |
| PISGAH RESERVOIR AND DITCH COMPANY | Good Standing | Fowler | 1923 |
| Plan Bravo Collateral Management, Inc. | Delinquent | Sherman Oaks | 2007 |
| PLANO VISTA DITCH COMPANY | Exists | 1887 | |
| PLATTE AVENUE LATERAL COMPANY | Exists | 1898 | |
| PLATTE VALLEY DITCH AND RESERVOIR COMPANY | Exists | 1903 | |
| PLATTEVILLE EXTENSION DITCH COMPANY | Exists | 1928 | |
| PLEASANT VALLEY EXTENSION DITCH COMPANY | Exists | 1924 | |
| PLEASANT VALLEY LATERAL COMPANY | Exists | 1904 | |
| PLEASANT VIEW WASTE DITCH COMPANY | Exists | 1923 | |
| PLUMB IRRIGATION COMPANY | Good Standing | Greeley | 2003 |
| PORTER DITCH AND RESERVOIR COMPANY | Exists | 1887 | |
| Porter Reservoir LLC | Delinquent | New Castle | 2004 |
| POUDRE PRAIRIE MUTUAL RESERVOIR & IRRIGATION COMPANY | Administratively Dissolved | 1996 | |
| PRAIRIE DITCH COMPANY (THE) (WATER) | Good Standing | Mosca | 1887 |
| Prather South Ditch Company | Voluntarily Dissolved | Debeque | 2008 |
| Preisser and Preisser Reservoir Company LLC | Delinquent | Colorado Springs | 2007 |
| PRICE DITCH LLC | Voluntarily Dissolved | Loma | 2017 |
| Price Ditch LLC | Voluntarily Dissolved | Grand Junction | 2023 |
| PRIMROSE IRRIGATION COMPANY | Exists | 1925 | |
| PRODUCTION ENHANCEMENT & RESERVOIR MANAGEMENT, LLC | Good Standing | Fairplay | 1999 |
| PRONGHORN RANCH WATER USERS' ASSOCIATION | Good Standing | Del Norte | 2000 |
| PROSPECT 55 LATERAL DITCH COMPANY | Good Standing | Wheat Ridge | 1991 |
| Pueblo Reservoir Unified Marina, LLC | Good Standing | Pueblo | 2022 |
| PUTNAM DITCH CO. | Exists | 1921 | |
| Quadrilateral Films | Voluntarily Dissolved | Morrison | 2018 |
| Queen Reservoir Solar, LLC, Colorado Authority Relinquished September 15, 2025 | Withdrawn | Lowell | 2022 |
| R & R DITCHING LLC | Voluntarily Dissolved | Colorado Springs | 2007 |
| R & R DITCHING, INC. | Good Standing | Colorado Springs | 1990 |
| R&R Ditching, LLC | Voluntarily Dissolved | Colorado Springs | 2018 |
| R. MCANALLY & ASSOCIATES, INC. | Administratively Dissolved | 1995 | |
| R. V. T. DITCH COMPANY | Administratively Dissolved | 1980 | |
| RAGGED MOUNTAIN WATER USERS ASSOCIATION | Good Standing | Somerset | 1961 |
| RAINBOW WATER USERS ASSOCIATION, INC. | Exists | 1958 | |
| RAMSDELL LATERAL COMPANY | Exists | 1906 | |
| RANDLEMAN WATER USERS ASSOCIATION, INCORPORATED | Exists | 1950 | |
| RANKIN RESERVOIR COMPANY | Voluntarily Dissolved | 1922 | |
| RE-ORGANIZED REVIVAL DITCH COMPANY | Exists | 1949 | |
| REAL ESTATE COLLATERAL MANAGEMENT COMPANY, Colorado Authority Terminated June 1, 2001 | Revoked | Los Angeles | 1990 |
| RED CLIFFS DITCH COMPANY | Good Standing | Durango | 1983 |
| RED FEATHER STORAGE AND IRRIGATION COMPANY | Good Standing | Red Feather Lakes | 1948 |
| RED MOUNTAIN DITCH COMPANY | Good Standing | Basalt | 1977 |
| REDHILL FOREST PROPERTY OWNERS, MUTUAL WATER AND CATTLE ASSOCIATION | Good Standing | Littleton | 1977 |
| REDLAND CLUB HEIGHTS MUTUAL WATER CO. | Exists | 1958 | |
| REDLANDS MESA WATER USERS INCORPORATED | Good Standing | Hotchkiss | 1951 |
| REDLANDS VILLAGE ACRES DITCH COMPANY | Good Standing | Grand Junction | 1971 |
| REDLANDS VILLAGE DITCH COMPANY (WATER) | Good Standing | Grand Junction | 1965 |
| REID SUBDIVISION LATERAL COMPANY | Delinquent | Loma | 2003 |
| RELIEF DITCH COMPANY | Exists | 1890 | |
| Reservoir Archer LLC | Good Standing | Fort Collins | 2020 |
| Reservoir Auctions LLC | Voluntarily Dissolved | Longmont | 2024 |
| Reservoir Construction LLC | Good Standing | Denver | 2025 |
| RESERVOIR DAWGS, LLC | Administratively Dissolved | Aspen | 1995 |
| Reservoir Development Company | Voluntarily Dissolved | Thornton | 2012 |
| Reservoir Dogs Development LLC | Delinquent | Denver | 2022 |
| Reservoir Dogs Limited | Voluntarily Dissolved | Castle Rock | 2023 |
| RESERVOIR DOGS MARKETING, LLC | Delinquent | Boulder | 2002 |
| RESERVOIR DOGS, L.L.C. | Administratively Dissolved | Boulder | 2001 |
| Reservoir Energy LLC | Delinquent | Windsor | 2018 |
| Reservoir Energy LLC, reinstated July 15, 2026 | Good Standing | Severance | 2024 |
| RESERVOIR ENGINEERING AND ART INC | Delinquent | Littleton | 2005 |
| RESERVOIR ENGINEERING, INC. | Voluntarily Dissolved | Potter | 2002 |
| RESERVOIR ENHANCEMENT LLC | Administratively Dissolved | Denver | 2002 |
| RESERVOIR ENHANCEMENT, INC. | Voluntarily Dissolved | Denver | 2002 |
| RESERVOIR EVALUATIONS GROUP, LLC | Administratively Dissolved | Aurora | 1996 |
| Reservoir Fund LLC | Good Standing | Centennial | 2013 |
| Reservoir Fusion Ltd. | Voluntarily Dissolved | Centennial | 2013 |
| Reservoir Group, Inc., Colorado Authority Relinquished October 21, 2022 | Withdrawn | Stafford | 2014 |
| Reservoir Heating & Cooling LLC | Delinquent | Pueblo | 2020 |
| Reservoir House LLC | Good Standing | Greeley | 2026 |
| RESERVOIR IMAGING SOLUTIONS | Delinquent | Highlands Ranch | 2020 |
| Reservoir Insight Geosolutions LLC | Good Standing | Arvada | 2016 |
| Reservoir Insurance Brokers, LLC | Good Standing | Eagle | 2022 |
| RESERVOIR LABS, INC. | Good Standing | New York | 2019 |
| RESERVOIR LAND, LLC | Delinquent | Denver | 2004 |
| Reservoir Limited | Good Standing | Fort Collins | 2024 |
| RESERVOIR LIQUORS, INC. | Voluntarily Dissolved | Pueblo | 1999 |
| Reservoir Logs, LLC | Good Standing | Fort Collins | 2022 |
| RESERVOIR MANAGEMENT SOLUTIONS, INC. | Administratively Dissolved | 1998 | |
| Reservoir Metrics, LLC | Voluntarily Dissolved | Houston | 2018 |
| RESERVOIR PERFORMANCE INCORPORATED | Administratively Dissolved | 1996 | |
| Reservoir Quality Solutions, LLC | Delinquent | Greenwood Village | 2019 |
| RESERVOIR RECOVERY SPECIALISTS, LLC | Administratively Dissolved | Englewood | 1993 |
| Reservoir rental llc | Delinquent | Pueblo | 2023 |
| Reservoir Rental Properties LLC | Good Standing | Pueblo | 2022 |
| Reservoir Ridge Remodeling LLC | Good Standing | Fort Collins | 2025 |
| reservoir rocktalk llc | Voluntarily Dissolved | Houston | 2010 |
| Reservoir Self Storage, LLC | Voluntarily Dissolved | Lone Tree | 2015 |
| Reservoir Solution Management, Inc. | Delinquent | Lovettsville | 2008 |
| Reservoir Theatre LLC | Good Standing | Colorado Springs | 2025 |
| Reservoir View Engineering, llc | Delinquent | Fort Collins | 2022 |
| Reservoir, LLC | Delinquent | Los Angeles | 2005 |
| ReservoirAlpha LLC | Good Standing | Denver | 2026 |
| ReservoirRevisit LLC | Delinquent | Morrison | 2017 |
| ResPro Reservoir Engineering, Inc. | Voluntarily Dissolved | Centennial | 2022 |
| REYNOLDS AND CAIN DITCH COMPANY | Good Standing | Glenwood Springs | 1980 |
| Rice Ditch | Good Standing | Denver | 2008 |
| RICHFIELD CANAL COMPANY | Exists | 1883 | |
| Rideau Canal, LLC | Good Standing | Avon | 2023 |
| RIDER, EDWARDS & MCANALLEN, P.C. | Administratively Dissolved | 1979 | |
| Ridge Ditch Inc. | Good Standing | Ignacio | 2014 |
| RIFLE CREEK CANON MUTUAL DITCH COMPANY | Voluntarily Dissolved | Rifle | 1919 |
| Rifle Creek Canyon Ditch CO | Good Standing | Rifle | 2009 |
| RIFLE CREEK DITCH COMPANY | Exists | 1930 | |
| RINN VALLEY WATER USERS ASSOCIATION | Exists | 1961 | |
| RIO CUCHARAS MUTUAL WATER COMPANY | Administratively Dissolved | La Veta | 1973 |
| RIO GRANDE AND PIEDRA VALLEY DITCH COMPANY | Good Standing | Del Norte | 1991 |
| RIO GRANDE AND SAN LUIS IRRIGATION COMPANY | Good Standing | Monte Vista | 1911 |
| RIO GRANDE CANAL WATER USERS' ASSOCIATION | Good Standing | Monte Vista | 1929 |
| RIO GRANDE DITCH NO. 1 COMPANY | Good Standing | La Jara | 1951 |
| RIO GRANDE DITCH NO. 4 COMPANY | Exists | 1955 | |
| Rio Grande Water Users Association | Good Standing | Monte Vista | 2015 |
| RIO GRANDE WATER USERS' ASSOCIATION | Voluntarily Dissolved | 1923 | |
| RIO-VISTA IRRIGATION ASSOCIATION, INC. | Delinquent | Montrose | 2003 |
| Rising Sun Ditch Company | Delinquent | Silt | 2024 |
| Rising Sun Ditch Company | Delinquent | Silt | 2007 |
| RIST AND BENSON RESERVOIR COMPANY | Exists | 1903 | |
| River Ranch Reservoir and Ditch Company, LLC | Good Standing | Fowler | 2024 |
| RIVERSIDE LATERAL COMPANY | Exists | 1916 | |
| Riverview Ditch Company | Good Standing | Pagosa Springs | 2026 |
| RIXEY MUTUAL LATERAL DITCH COMPANY | Exists | 1935 | |
| ROAN CREEK DITCH NUMBER TWO COMPANY | Exists | 1917 | |
| ROARING FORK RIVER--ROBERTSON DITCH COMPANY | Administratively Dissolved | 1991 | |
| Roberson Manor Irrigation Company | Good Standing | Fruita | 1980 |
| ROBERTA DITCH COMPANY | Exists | 1923 | |
| Roberts-Stucker Ditch Association | Noncompliant | Hotchkiss | 2007 |
| ROCKFORD DITCH ASSOCIATION, INC. | Good Standing | Carbondale | 1956 |
| ROCKLAND MUTUAL WATER COMPANY | Exists | 1961 | |
| ROCKWELL DITCH COMPANY | Good Standing | Berthoud, | 1884 |
| ROCKY FORD DITCH COMPANY | Good Standing | Rocky Ford | 1882 |
| ROCKY FORD LATERAL NO. 2, INC. | Exists | 1960 | |
| ROCKY MOUNTAIN BARGE, CANAL & STEAMSHIP COMPANY | Good Standing | Lakewood | 1988 |
| ROCKY MOUNTAIN LATERAL, LLC | Good Standing | Bennett | 2016 |
| ROMERO IRRIGATION COMPANY | Delinquent | 1900 | |
| Root Canal Management, LLC | Good Standing | Anchorage | 2016 |
| Roseman Ditch Company | Delinquent | Rifle | 2013 |
| ROSEMAN DITCH COMPANY | Administratively Dissolved | New Castle | 1981 |
| ROSS BROTHERS DITCH COMPANY | Exists | 1950 | |
| ROUGH AND READY IRRIGATING DITCH COMPANY | Good Standing | Longmont | 1891 |
| ROULLARD LATERAL COMPANY | Delinquent | 1890 | |
| RUNZEL GULCH WATER USERS, INC. | Good Standing | Hotchkiss | 1984 |
| RURAL DITCH COMPANY | Good Standing | Longmont | 1873 |
| Ruscanali.ink | Delinquent | Boulder | 2017 |
| RUSSELL AND THATCHER DITCH AND RESERVOR COMPANY | Exists | 1907 | |
| RYAN GULCH RESERVOIR COMPANY | Good Standing | Loveland | 1905 |
| Ryan Reservoir Company | Good Standing | Cedaredge | 2023 |
| S & L LATERAL DITCH COMPANY LLC | Voluntarily Dissolved | Bayfield | 2021 |
| S.A. HOLDITCH AND ASSOCIATES, INC., Colorado Authority Terminated November 1, 2000 | Revoked | College Station | 1998 |
| SACKETT RESERVOIR COMPANY | Exists | 1919 | |
| SADDLE MOUNTAIN MUTUAL WATER COMPANY | Good Standing | Florissant | 2003 |
| SAGE WATER USERS ASSOCIATION | Good Standing | Peyton | 1986 |
| SAGUACHE CREEK WATER USERS ASSOCIATION | Good Standing | Saguache | 2009 |
| SAGUACHE DRAINAGE AND IRRIGATION COMPANY | Exists | 1911 | |
| SALIDA DITCH COMPANY | Exists | 1920 | |
| SALISBURY LATERAL DITCH COMPANY | Good Standing | Denver | 1901 |
| SALVATION DITCH COMPANY | Good Standing | Aspen | 1950 |
| Sampson & Frasier Ditch Company | Good Standing | Montrose | 2015 |
| Samzack Water Users Association | Good Standing | Fruita | 2009 |
| SAN FRANCISCO DITCH COMPANY | Good Standing | San Luis | 1969 |
| SAN ISABEL WATER USERS' ASSOCIATION | Exists | 1951 | |
| SAN ISABEL WAY MUTUAL WATER COMPANY | Good Standing | Beulah | 1988 |
| SAN JUAN BASIN WATER USERS ASSOCIATION | Exists | 1930 | |
| San Juan Scanalog, LLC | Delinquent | Ignacio | 2009 |
| SAN LUIS VALLEY WATER USERS' PROTECTIVE ASSOCIA | Exists | 1923 | |
| Sanadora de Luz, Canalizadora de Luz, Vidente de Luz, LLC. | Noncompliant | Thornton | 2025 |
| SANBORN RESERVOIR AND DITCH COMPANY (THE) (WATER) | Good Standing | Longmont | 1898 |
| SAND CREEK ESTATES WATER USERS ASSOCIATION | Good Standing | Sterling | 2000 |
| SANDERS DITCH COMPANY LLC | Delinquent | Durango | 2013 |
| SANFORD CANAL COMPANY | Exists | 1892 | |
| SANFORD LATERAL DITCH COMPANY | Exists | 1928 | |
| SANTA FE RESERVOIR COMPANY | Exists | 1931 | |
| SANTA MARIA RESERVOIR COMPANY | Good Standing | Monte Vista | 1931 |
| SAUDI WATER USERS, INC. | Delinquent | Monte Vista | 2000 |
| Save The Aurora Reservoir | Good Standing | Aurora | 2023 |
| SAYRE SUBDIVISION MUTUAL WATER COMPANY | Delinquent | 1959 | |
| SCANDINAVIAN DITCH COMPANY | Exists | 1898 | |
| SCHATTINGER RESERVOIR, INC. | Good Standing | Franktown | 1990 |
| SCHNEIDER DITCH COMPANY | Good Standing | Sterling | 1877 |
| SCHOOL LATERAL DITCH COMPANY | Good Standing | Lakewood | 1926 |
| SCHRODER IRRIGATING DITCH COMPANY | Exists | 1886 | |
| SEAMAN SYNDICATE DITCH COMPANY | Exists | 1910 | |
| SECOND CREEK LATERAL DITCH AND RESERVOIR COMPANY | Exists | 1922 | |
| SECTION 18 WATER USERS ASSOCIATION | Good Standing | Longmont | 2001 |
| SECTION 24 WATER USERS ASSOCIATION | Good Standing | Longmont | 1983 |
| SECTIONS 11 AND 14 WATER USERS ASSOCIATION | Good Standing | Longmont | 1981 |
| SECURITY LATERAL COMPANY | Exists | 1959 | |
| Sedalia Reservoir, LLC | Good Standing | Greenwood Village | 2009 |
| Sellers & McClane Reservoir & Ditch Company | Delinquent | Mancos | 2018 |
| Sellers & McClane Reservoir & Ditch Company | Voluntarily Dissolved | Mancos | 2018 |
| SELLMAN MUTUAL LATERAL DITCH COMPANY | Exists | 1918 | |
| SERGEANT LATERAL COMPANY | Exists | 1920 | |
| SERVIETTA DITCH COMPANY | Exists | 1908 | |
| SEVEN LAKES IRRIGATION COMPANY | Exists | 1942 | |
| Shadycroft on the Highline Canal LLC | Voluntarily Dissolved | Highlands Ranch | 2018 |
| SHAMROCK IRRIGATION COMPANY, INC. | Good Standing | Fort Collins | 1994 |
| SHAVANO VALLEY DITCH COMPANY | Good Standing | Montrose | 1990 |
| SHAW RESERVOIR COMPANY | Voluntarily Dissolved | Alamosa | 1955 |
| SHEAFFER DITCH COMPANY | Good Standing | Carbondale | 1980 |
| SHEEK DITCH COMPANY | Good Standing | Mancos | 2004 |
| SHELTON MUTUAL DITCH COMPANY | Exists | 1924 | |
| SHERIDAN BLVD. LATERAL DITCH COMPANY | Exists | 1944 | |
| SHERWOOD IRRIGATION COMPANY | Good Standing | Severance | 1918 |
| Shippee Ditch Company, Inc. | Good Standing | Basalt | 2007 |
| SHOLDT SUBDIVISION WATER USERS ASSOCIATION | Delinquent | Platteville | 2003 |
| Shoreditch Investments, LLC | Good Standing | Denver | 2020 |
| SHORT DITCH EXTENSION COMPANY | Good Standing | Paonia | 1945 |
| SHORT LINE DITCH COMPANY | Exists | 1882 | |
| Si Johnson Ditch Company | Good Standing | Aspen | 2009 |
| SIERRA VISTA-DOUGLAS MUTUAL WATER COMPANY | Good Standing | Parker | 1988 |
| SIGNAL DITCH COMPANY | Exists | 1885 | |
| SILVER HEIGHTS MUTUAL WATER AND SEWER CO. | Exists | 1962 | |
| SILVER LAKE DITCH AND RESERVOIR COMPANY | Good Standing | Boulder | 1888 |
| Simon 1 Ditch Company | Noncompliant | Durango | 2025 |
| SIMON MUTUAL DITCH AND RESERVOIR COMPANY | Exists | 1920 | |
| Sky Meadow Water Users Association | Good Standing | Golden | 2018 |
| Skyline Ditch Company | Good Standing | Greeley | 2018 |
| Skyline Ditch Company LLC | Voluntarily Dissolved | Greeley | 2017 |
| SLATE DITCH COMPANY | Good Standing | Fort Lupton | 1903 |
| SLOAN'S LAKE LATERAL DITCH COMPANY | Exists | 1945 | |
| SMART RESERVOIR AND IRRIGATION, INCORPORATED | Good Standing | Arvada | 1988 |
| Smelter 1 Lateral 11 Users' Association | Noncompliant | Pueblo | 2009 |
| Smith Ditch, LLC | Voluntarily Dissolved | Silverthorne | 2015 |
| SMITH FORK CONSERVANCY WATER USERS ASSOCIATION, INC. | Delinquent | Crawford | 2004 |
| SMITH IRRIGATION DITCH | Exists | 1997 | |
| Smith Lateral Company | Good Standing | Windsor | 2014 |
| SMITH MUTUAL DITCH COMPANY | Exists | 1913 | |
| SMITH-MCKNIGHT DITCH COMPANY | Exists | 1938 | |
| Snowflake & Ditch LLC | Voluntarily Dissolved | Basalt | 2023 |
| SNOWMASS CANYON LAST CHANCE DITCH COMPANY | Delinquent | Basalt | 2000 |
| SNOWY RANGE RESERVOIR COMPANY | Good Standing | Boulder | 2002 |
| Snyder Ditch Company | Good Standing | Cincinnati | 2020 |
| SNYDER LATERAL COMPANY | Good Standing | Fort Morgan | 2025 |
| Snyder-Smith Ditch Co. | Good Standing | Brush | 1970 |
| SODA CREEK DITCH COMPANY | Good Standing | Aspen | 2003 |
| SOLAR MUTUAL WATER COMPANY | Good Standing | Littleton | 1978 |
| Sons Of Ditches LLC | Voluntarily Dissolved | La Salle | 2024 |
| SOONER DITCH COMPANY | Good Standing | Cedaredge | 1910 |
| Sorrel Hills Mutual Ditch and Reservoir Company | Good Standing | Eagle | 2013 |
| SOUTH BOULDER AND COAL CREEK IRRIGATING DITCH COMP | Good Standing | Louisville | 1872 |
| SOUTH BOULDER CANON DITCH COMPANY | Good Standing | Longmont | 1871 |
| South Canal 660, LLC | Voluntarily Dissolved | Montrose | 2005 |
| SOUTH CANON DITCH COMPANY | Good Standing | Canon City | 1880 |
| SOUTH CHEYENNE IRRIGATING DITCH CO. | Exists | 1879 | |
| SOUTH DENVER GARDENS MUTUAL WATER ASSOCIATION II | Delinquent | Greenwood Village | 1983 |
| SOUTH DENVER GARDENS MUTUAL WATER ASSOCIATION | Administratively Dissolved | Denver | 1958 |
| SOUTH LEDGE DITCH COMPANY | Good Standing | Longmont | 1925 |
| SOUTH PAWNEE LATERAL COMPANY | Exists | 1925 | |
| SOUTH PLATTE DITCH WELL USERS, INC. | Good Standing | Merino | 2004 |
| SOUTH RESERVATION DITCH CORPORATION | Good Standing | Julesburg | 1973 |
| SOUTH ROCKYFORD MUTUAL CANAL COMPANY | Exists | 1919 | |
| SOUTH SIDE ARROYA DITCH COMPANY | Exists | 1922 | |
| SOUTH SIDE DITCH COMPANY | Good Standing | Loveland | 1906 |
| SOUTH SIDE DITCH EXTENSION COMPANY | Good Standing | Loveland | 1881 |
| SOUTH SIDE LATERAL COMPANY | Good Standing | Fort Morgan | 1939 |
| SOUTH SIDE RESERVOIR COMPANY | Good Standing | Loveland | 2002 |
| South Tollgate Ditch Company | Good Standing | Longmont | 2019 |
| Southland Collateral, LLC | Delinquent | Greenwood Village | 2009 |
| SPL DITCH COMPANY | Delinquent | Greeley | 1998 |
| SPRING CANON RESERVOIR AND CANAL COMPANY | Exists | 1885 | |
| Spring Canon Waste Way Ditch Company | Good Standing | Fort Collins | 2024 |
| SPRING CREEK EXTENSION DITCH COMPANY | Good Standing | Ignacio | 1901 |
| SPRING DALE DITCH COMPANY | Exists | 1886 | |
| SPRING LAKE HEIGHTS WATER USERS ASSOCIATION | Good Standing | Longmont | 1968 |
| SPRING PARK IRRIGATION COMPANY | Exists | 1921 | |
| SPRING VALLEY MUTUAL WATER ASSOCIATION | Good Standing | Boulder | 1965 |
| ST. GEORGE RESERVOIR ESTATES, INC. | Delinquent | Evergreen | 2002 |
| St. Michael's Reservoir Estate, LLC | Good Standing | Greeley | 2012 |
| ST. VRAIN LAND AND IRRIGATION COMPANY | Exists | 1884 | |
| ST. VRAIN MUTUAL RESERVOIR AND WATER COMPANY | Administratively Dissolved | Longmont | 1984 |
| ST. VRAIN WATER USERS ASSOCIATION | Exists | 1961 | |
| STAR DITCH COMPANY | Exists | 1878 | |
| STARBIRD LATERAL DITCH COMPANY | Exists | 1878 | |
| STARK - VOLKMAN DITCH COMPANY | Good Standing | Montrose | 1962 |
| Steele Valley Ditch MM LLC | Good Standing | Denver | 2016 |
| STEGNER DITCHING LLC | Delinquent | Snyder | 2005 |
| STERLING NO. 2, DITCH COMPANY | Exists | 1885 | |
| Stevens and Linder Ditch Company | Good Standing | Cedaredge | 2014 |
| STEWART DITCH EXTENSION COMPANY | Delinquent | Paonia | 1898 |
| Stewart No. 1 Ditch Company | Good Standing | Snowmass | 2004 |
| stichin in the ditches, llc | Good Standing | Littleton | 2013 |
| STILLWATER DITCH AND RESERVOIRS COMPANY | Exists | 1906 | |
| Stirrup Creek Irrigation Water User Association | Good Standing | Delta | 2026 |
| Stonewall Springs Reservoir Company | Good Standing | Colorado Springs | 2020 |
| Stoney Canal Enterprise LLC | Delinquent | North Glenn | 2015 |
| Stoney Canal Studios llc | Delinquent | Northglenn | 2020 |
| STORM DITCH COMPANY | Voluntarily Dissolved | Thornton | 1911 |
| STRANSKY LATERAL DITCH COMPANY | Exists | 1939 | |
| Strata Reservoir & Engineering LLC | Good Standing | Denver | 2025 |
| Stratum Reservoir (Isotech), LLC | Delinquent | Houston | 2013 |
| Stratum Reservoir, LLC | Delinquent | Houston | 2006 |
| Stremme-Gates Ditch Operations, Inc. | Good Standing | Gypsum | 2009 |
| Stumpf Lateral Ditch Company | Good Standing | Eaton | 2012 |
| SUBURBAN DITCH COMPANY | Exists | 1947 | |
| SUBURBAN LATERAL COMPANY | Exists | 1909 | |
| SUBURBAN LATERAL DITCH CO. | Good Standing | Pueblo | 1961 |
| Sullivan Ditch Company | Good Standing | Bayfield | 2016 |
| SULLIVAN-WALLACE DITCH COMPANY, INC. | Good Standing | Durango | 1998 |
| Sunny Slope Reservoir Company | Good Standing | Berthoud | 1923 |
| SUNNYSIDE ACRES LATERAL DITCH COMPANY | Exists | 1945 | |
| SUNNYSIDE ESTATES WATER USERS ASSOCIATION | Good Standing | Lewis | 1991 |
| SUNNYSIDE LATERAL DITCH COMPANY | Good Standing | Berthoud | 1948 |
| SUNNYSIDE PARK DITCH COMPANY | Good Standing | Salida | 1892 |
| SUNNYSLOPE MUTUAL WATER CORPORATION | Exists | 1957 | |
| SUNRISE ACRES WATER USERS' ASSOCIATION | Good Standing | Fort Collins | 1993 |
| Sunrise Ditch Company | Good Standing | Montrose | 2022 |
| Sunrise Ditch Owners Association | Good Standing | Cedaredge | 2009 |
| SUNRISE DITCH, INC. | Exists | 1964 | |
| SUNRISE DITCH, INC. | Voluntarily Dissolved | 1964 | |
| SUNSET ESTATES WATER USERS ASSOCIATION, INC. | Good Standing | Dolores | 1993 |
| SUNSET HILLS WATER USERS ASSOCIATION | Exists | 1954 | |
| SUNSET LAKE FEEDER DITCH CO. | Exists | 1953 | |
| Surface Creek Ditch & Reservoir Company | Delinquent | Cedaredge | 2014 |
| SURFACE CREEK DITCH AND RESERVOIR COMPANY | Good Standing | Cedaredge | 1886 |
| SWAN VIEW IRRIGATION COMPANY | Delinquent | Clifton | 1994 |
| Swan View Water Users Association | Good Standing | Clifton | 1980 |
| SWEDE DITCH COMPANY | Exists | 1922 | |
| SWEDE LATERAL DITCH COMPANY | Exists | 1920 | |
| SWINK JONES LATERAL COMPANY | Exists | 1933 | |
| SYLVAN DITCH AND RESERVOIR COMPANY | Exists | 1911 | |
| T. T. & C. DITCH COMPANY | Good Standing | Pagosa Springs | 1979 |
| TAILHOLT IRRIGATION COMPANY | Voluntarily Dissolved | Eaton | 2012 |
| TALBOT RESERVOIR IRRIGATION, LLC | Delinquent | Brighton | 1998 |
| Talbott Lateral Ditch LLC | Delinquent | Eastlake | 2006 |
| Talbott Water Users LLC | Delinquent | Eastlake | 2006 |
| TALLEY DITCH COMPANY | Exists | 1953 | |
| TALMADGE AND GIBSON DITCH AND RESERVOIR COMPANY | Exists | 1923 | |
| Tenassee Ditch Associates | Good Standing | Salida | 2014 |
| Tenassee Ditch Company LLC | Noncompliant | Salida | 2025 |
| TENTH AVENUE LATERAL DITCH COMPANY | Administratively Dissolved | 1934 | |
| TERROR DITCH AND RESERVOIR COMPANY | Good Standing | Paonia | 1925 |
| Terry Lake Reservoir Company | Voluntarily Dissolved | Eaton | 2010 |
| Tetsel Mutual Ditch Company | Good Standing | Aurora | 2024 |
| Tha DitchBaby Streetwear LLC | Delinquent | Colorado Springs | 2022 |
| The Abraham Davis Ditch Company | Good Standing | Cincinnati | 2023 |
| THE AGRICULTURAL DITCH AND RESERVOIR COMPANY | Good Standing | Denver | 1982 |
| THE AMITY MUTUAL IRRIGATION COMPANY | Good Standing | Holly | 1936 |
| THE ARTHUR IRRIGATION COMPANY | Good Standing | Severance | 1886 |
| THE ASPEN RIVER VALLEY RANCH ELI CERISE DITCH COMPANY | Good Standing | Snowmass | 2025 |
| THE B. H. EATON DITCH COMPANY | Good Standing | Windsor | 1910 |
| THE BAGWELL DITCH COMPANY, INC. | Exists | 1996 | |
| THE BASE LINE LAND AND RESERVOIR COMPANY | Good Standing | Lafayette | 1904 |
| THE BAUGH LATERAL DITCH AND RESERVOIR COMPANY | Good Standing | Mead | 1914 |
| THE BEAVER CREEK DITCH COMPANY | Good Standing | Brush | 1889 |
| THE BEEMAN IRRIGATING DITCH AND MILLING COMPANY | Good Standing | Denver | 1878 |
| THE BERGEN DITCH & RESERVOIR COMPANY | Good Standing | Littleton | 1885 |
| THE BESSEMER DITCH LATERAL 20 USERS' ASSOCIATION | Good Standing | Pueblo | 1996 |
| THE BIG CUT LATERAL AND RESERVOIR COMPANY | Good Standing | Windsor | 1890 |
| The Big Ditch Company | Good Standing | Cedaredge | 2012 |
| THE BIG LATERAL DITCH CO. | Good Standing | Loveland | 1885 |
| THE BIG THOMPSON DITCH AND MANUFACTURING COMPANY | Good Standing | Loveland | 1886 |
| THE BIJOU IRRIGATION COMPANY | Good Standing | Fort Morgan | 1900 |
| The Bijou Lateral Operating Committee | Voluntarily Dissolved | Fort Morgan | 2010 |
| THE BLAINE LATERAL COMPANY | Good Standing | Greeley | 1989 |
| The Bliss Lateral Company | Good Standing | Greeley | 2021 |
| THE BLUE STONE DITCH ASSOCIATION | Good Standing | De Beque | 1936 |
| The Bona Fide Ditch Company | Good Standing | Delta | 1910 |
| THE BONUS DITCH COMPANY | Good Standing | Longmont | 1908 |
| THE BOOMERANG LATERAL CO. | Good Standing | Greeley | 1896 |
| THE BORREGO DITCH COMPANY | Exists | 1967 | |
| THE BOSS DITCH COMPANY INC. | Voluntarily Dissolved | Mancos | 1990 |
| THE BOULDER AND WELD RESERVOIR COMPANY | Merged | Longmont | 1904 |
| The Boulder and White Rock Lateral and Siphon Company | Good Standing | Longmont | 2008 |
| THE BOX ELDER DITCH COMPANY | Good Standing | Severance | 1873 |
| THE BOYD IRRIGATION COMPANY | Good Standing | Greeley | 1984 |
| THE BRIGHTON DITCH COMPANY | Good Standing | Fort Lupton | 1880 |
| THE BROWN AND BAUGH DITCH COMPANY | Good Standing | Arvada | 1910 |
| The Brown Lateral Company | Noncompliant | Greeley | 2019 |
| THE BUFFALO MUTUAL IRRIGATION COMPANY | Good Standing | Holly | 1950 |
| THE BURLINGTON DITCH RESERVOIR AND LAND COMPANY | Good Standing | Brighton | 1885 |
| THE BURLINGTON EXTENSION DITCH COMPANY | Administratively Dissolved | 1894 | |
| THE CACHE LA POUDRE RESERVOIR COMPANY | Good Standing | Lucerne | 1892 |
| THE CACHE LA POUDRE WATER USERS' ASSOCIATION | Good Standing | Eaton | 1933 |
| THE CANON HEIGHTS IRRIGATION AND RESERVOIR COMPANY | Good Standing | Canon City | 1919 |
| THE CAPULIN DITCH COMPANY | Good Standing | Alamosa | 2008 |
| THE CARE GROUP AT BOULDER RESERVOIR, L.L.C. | Voluntarily Dissolved | Arvada | 2003 |
| The Carr and Tyler Ditch and Reservoir Company | Good Standing | Broomfield | 2020 |
| THE CEDAR HILL LATERAL DITCH AND PIPE LINE COMPANY | Good Standing | Paonia | 1932 |
| THE CHENOWITH LATERAL DITCH COMPANY | Exists | 1921 | |
| THE CHURCH DITCH COMPANY | Voluntarily Dissolved | Northglenn | 1979 |
| THE CIMARRON CANAL AND RESERVOIR COMPANY | Good Standing | Montrose | 1978 |
| The Citizens Animas Irrigation Company | Noncompliant | Durango | 2016 |
| THE CLINTON DITCH & RESERVOIR COMPANY | Good Standing | Silverthorne | 1992 |
| THE CLOVER BASIN IRRIGATION COMPANY | Good Standing | Longmont | 1926 |
| The Collier Ditch company | Good Standing | Grand Junction | 2007 |
| THE COLORADO AGRICULTURAL DITCH COMPANY | Good Standing | Thornton | 1873 |
| THE COLORADO CANAL COMPANY | Good Standing | Ordway | 1972 |
| THE COMMONWEALTH IRRIGATION COMPANY | Good Standing | Alamosa | 1980 |
| THE CONSOLIDATED EXTENSION CANAL COMPANY | Good Standing | Denver | 1910 |
| THE CONSOLIDATED HILLSBOROUGH DITCH COMPANY | Good Standing | Johnstown | 1898 |
| THE CONSOLIDATED JUCHEM DITCH AND RESERVOIR COMPANY, Delinquency Cured January 06, 2014 | Good Standing | Arvada | 1934 |
| THE CONSOLIDATED MUTUAL WATER COMPANY | Good Standing | Denver | 1926 |
| THE COOKE IRRIGATION COMPANY | Good Standing | Lucerne | 1905 |
| THE CRAWFORD CLIPPER DITCH COMPANY | Good Standing | Crawford | 1885 |
| THE CRYSTAL SPRING, DITCH AND PIPELINE CORP. | Good Standing | Carbondale | 1967 |
| THE CULVER LATERAL DITCH COMPANY | Good Standing | Denver | 1920 |
| THE D ROAD MUTUAL IRRIGATION COMPANY | Good Standing | Grand Junction | 1997 |
| THE DAVE MILLER MUTUAL DITCH COMPANY | Good Standing | Lyons | 1977 |
| THE DE WEESE-DYE DITCH AND RESERVOIR COMPANY | Good Standing | Canon City | 1895 |
| THE DEER TRAIL DITCH COMPANY | Good Standing | Golden | 1950 |
| THE DELTA IRRIGATION COMPANY | Good Standing | Greeley | 1891 |
| THE DENIO & TAYLOR MILL DITCH COMPANY | Good Standing | Longmont | 1920 |
| THE DESERT RESERVOIR COMPANY | Good Standing | Boulder | 1929 |
| The Dirty Ditch Farm LLC | Good Standing | Salida | 2015 |
| The Ditch Company | Noncompliant | Pagosa Springs | 2023 |
| The Ditch on 40 LLC | Good Standing | Winter Park | 2013 |
| The Ditch Plug LLC | Delinquent | Greeley | 2022 |
| The Ditchpensary LLC | Delinquent | Winter Park | 2015 |
| The Divide Lateral Company | Good Standing | Greeley | 2022 |
| THE DIXON CANON DITCH AND RESERVOIR COMPANY | Good Standing | Fort Collins | 1984 |
| THE DRY CREEK NO. 2. DITCH COMPANY | Good Standing | Boulder | 1894 |
| THE DUKE DITCH COMPANY | Good Standing | Hotchkiss | 1920 |
| THE DUROUX DITCH COMPANY | Good Standing | Snowmass Village | 1990 |
| THE EAST MESA DITCH COMPANY | Exists | 1907 | |
| THE EATON-LAW RESERVOIR COMPANY | Good Standing | Greeley | 1980 |
| THE ECHO DITCH COMPANY | Good Standing | Pagosa Springs | 1971 |
| THE EISELE LATERAL DITCH COMPANY | Good Standing | Longmont | 1968 |
| THE ELK CREEK DITCH COMPANY | Good Standing | Glenwood Springs | 1996 |
| THE EMIGH LATERAL DITCH COMPANY | Delinquent | Fort Collins | 1921 |
| THE ERKENBECK LATERAL DITCH COMPANY | Good Standing | Platteville | 1911 |
| THE EXCELSIOR DITCH COMPANY | Delinquent | Monte Vista | 1902 |
| THE EXTENSION IRRIGATION COMPANY | Good Standing | Johnstown | 1915 |
| THE FAIRPORT RESERVOIR AND DITCH COMPANY | Voluntarily Dissolved | Fort Collins | 1904 |
| THE FARMER'S DITCH COMPANY | Good Standing | Longmont | 1872 |
| THE FARMERS EXTENSION DITCH COMPANY | Good Standing | Johnstown | 1889 |
| THE FARMERS HIGH LINE LATERAL DITCH COMPANY | Good Standing | Thornton | 1931 |
| THE FARMERS RESERVOIR AND IRRIGATION COMPANY | Good Standing | Brighton | 1902 |
| THE FINLEY LATERAL DITCH COMPANY | Good Standing | Eaton | 1952 |
| THE FIRE MOUNTAIN CANAL AND RESERVOIR COMPANY | Good Standing | Hotchkiss | 1924 |
| THE FISHER DITCH COMPANY | Good Standing | Denver | 1921 |
| THE FOR FAR LATERAL COMPANY | Good Standing | Eaton | 1906 |
| THE FORT LYON CANAL COMPANY | Good Standing | Las Animas | 1897 |
| THE FROST IRRIGATION WATER CO. | Administratively Dissolved | 1975 | |
| THE FRUITLAND IRRIGATION COMPANY | Good Standing | Hotchkiss | 1901 |
| The Fry-Haskins Ditch maintance | Delinquent | Bellvue | 2016 |
| The Githens Lateral Ditch Company | Good Standing | Boulder | 2023 |
| THE GODDING DITCH COMPANY | Good Standing | Longmont | 1911 |
| THE GODFREY DITCH COMPANY | Good Standing | Aurora | 1910 |
| THE GOLDEN CANAL AND RESERVOIR COMPANY | Good Standing | Lakewood | 1911 |
| THE GOODHUE DITCH & RESERVIOR COMPANY | Good Standing | Louisville | 1949 |
| THE GOODNIGHT AVENUE IRRIGATION COMPANY | Good Standing | Pueblo | 1917 |
| THE GRANADA IRRIGATION COMPANY | Good Standing | Lamar | 1946 |
| THE GRAND VALLEY WATER USERS' ASSOCIATION | Good Standing | Grand Junction | 1905 |
| THE GRAPEVINE LATERAL DITCH COMPANY | Good Standing | Greeley | 1883 |
| THE GREELEY AND LOVELAND IRRIGATION COMPANY | Good Standing | Greeley | 1900 |
| THE GREELEY IRRIGATION COMPANY | Good Standing | Greeley | 1882 |
| THE GREEN MOUNTAIN IRRIGATION COMPANY | Good Standing | Lakewood | 1943 |
| THE HANDY DITCH COMPANY | Good Standing | Berthoud | 1878 |
| THE HARRIMAN DITCH COMPANY | Good Standing | Denver | 1892 |
| THE HARRY LATERAL DITCH COMPANY | Good Standing | Johnstown | 1961 |
| THE HAYES TEAGUE DITCH COMPANY | Delinquent | Montrose | 2003 |
| The Heritage at Bostwick Park Irrigation/Domestic Water Company, Inc. | Delinquent | Montrose | 2024 |
| THE HICKORY JACKSON DITCH COMPANY | Good Standing | Alamosa | 1888 |
| THE HIELAND DITCH COMPANY | Good Standing | Montrose | 1970 |
| THE HIGHLAND IRRIGATION COMPANY | Voluntarily Dissolved | 1914 | |
| THE HIGHLAND LAKE LATERAL DITCH COMPANY | Good Standing | Longmont | 1887 |
| THE HIGHLAND LAKE RESERVOIR COMPANY | Good Standing | Westminster | 1900 |
| THE HILLCREST DITCH AND RESERVOIR COMPANY | Good Standing | Denver | 1918 |
| THE HILLSBOROUGH EXTENSION DITCH CO. | Good Standing | Johnstown | 1947 |
| THE HORSE CREEK WATER USERS ASSOCIATION | Good Standing | Rush | 1994 |
| THE HOT SPRINGS RESERVOIR ASSOCIATION | Good Standing | Gunnison | 1955 |
| THE HUDSON DITCH AND RESERVOIR COMPANY | Good Standing | Brighton | 1914 |
| THE HUERFANO-CUCHARAS IRRIGATION COMPANY | Good Standing | Denver | 1944 |
| The Hurick Lateral | Good Standing | Eaton | 2007 |
| The I-V-A View Subdivision Homeowners Association and Ditch Company | Good Standing | Collbran | 2005 |
| THE IDAHO AND CENTRAL DITCH AND PIPELINE COMPANY, INC. | Administratively Dissolved | 1991 | |
| THE IDE & STARBIRD RESERVOIR COMPANY | Good Standing | Denver | 1905 |
| The Indian ditch,a community ditch | Voluntarily Dissolved | Durango | 2022 |
| THE ISH RESERVOIR COMPANY | Good Standing | Johnstown | 1905 |
| THE J. & M. HUGHES DITCH COMPANY, A COLORADO NON-PROFITCORPORATION | Good Standing | Montrose | 1993 |
| THE JACKSON DITCH COMPANY | Good Standing | Fort Collins | 1894 |
| THE JAMES DITCH COMPANY | Good Standing | Longmont | 1874 |
| THE JEFFERSON LAKE DITCH COMPANY | Good Standing | Aurora | 1889 |
| THE JOE FREED DITCH AND RESERVOIR COMPANY | Good Standing | Hesperus | 1913 |
| THE JOHN FLOOD DITCH COMPANY | Merged | Trinidad | 1911 |
| THE JOSEPH W. BOWLES RESERVOIR COMPANY | Good Standing | Evergreen | 1906 |
| THE KAYSER MUTUAL DITCH COMPANY | Good Standing | Mc Coy | 1903 |
| The Kelton Heights Lateral Ditch Association | Good Standing | Lakewood | 2016 |
| THE KERSHAW DITCH COMPANY | Good Standing | Westminster | 1905 |
| THE KESTER DITCH COMPANY | Good Standing | Basalt | 2000 |
| THE KING CONSOLIDATED DITCH COMPANY | Good Standing | Ignacio | 1901 |
| THE LA JUNTA GARDENS IRRIGATION COMPANY | Good Standing | La Junta | 2001 |
| The La Vega Ditch Company | Good Standing | Antonito | 2026 |
| THE LAKE HENRY RESERVOIR COMPANY | Good Standing | Ordway | 1950 |
| THE LAKE MEREDITH RESERVOIR COMPANY | Good Standing | Ordway | 1907 |
| THE LAKESIDE LATERAL DITCH COMPANY | Good Standing | Eaton | 1899 |
| THE LANE DITCH COMPANY | Voluntarily Dissolved | Denver | 1910 |
| THE LARIMER AND WELD IRRIGATION COMPANY | Good Standing | Eaton | 1879 |
| THE LARIMER COUNTY CANAL NUMBER TWO IRRIGATING COMPANY | Good Standing | Severance | 1878 |
| THE LAS ANIMAS CONSOLIDATED CANAL COMPANY | Good Standing | Denver | 1941 |
| THE LAST CHANCE DITCH COMPANY #2 | Good Standing | Aurora | 1888 |
| The Last Ditch | Good Standing | Cedaredge | 2012 |
| THE LEE LATERAL DITCH COMPANY | Good Standing | Wheat Ridge | 1927 |
| THE LOESCH AND CRANN DITCH COMPANY | Good Standing | Rifle | 1913 |
| THE LONE CABIN DITCH & RESERVOIR COMPANY | Good Standing | Paonia | 1905 |
| THE LONE CONE DITCH AND RESERVOIR COMPANY | Delinquent | Norwood | 1888 |
| THE LONE PINE DITCH AND RESERVOIR COMPANY | Exists | 1901 | |
| THE LONE ROCK DITCH COMPANY | Good Standing | Crawford | 1970 |
| THE LOS SAUCES DITCH COMPANY | Good Standing | Sanford | 1923 |
| THE LOUDEN IRRIGATING CANAL & RESERVOIR COMPANY | Good Standing | Fort Collins | 1878 |
| THE LOVELAND LAKE AND DITCH COMPANY | Good Standing | Berthoud | 1898 |
| THE LOWER LATHAM DITCH COMPANY | Good Standing | Greeley | 1871 |
| THE LOWER LATHAM RESERVOIR COMPANY | Good Standing | Greeley | 1898 |
| THE LOWER PLATTE AND BEAVER CANAL COMPANY | Good Standing | Hillrose | 1888 |
| THE LUCAS LATERAL DITCH COMPANY | Good Standing | Eaton | 1912 |
| THE LUPTON BOTTOM DITCH COMPANY | Good Standing | Fort Lupton | 1894 |
| THE LUPTON MEADOWS DITCH COMPANY | Good Standing | Fort Lupton | 1916 |
| THE MANVEL CANAL AND IRRIGATION COMPANY | Voluntarily Dissolved | Lamar | 1912 |
| THE MC BROOM DITCH COMPANY | Good Standing | Englewood | 1924 |
| THE MC INTYRE LATERAL DITCH COMPANY | Good Standing | Berthoud | 1918 |
| THE MC KAY LATERAL COMPANY | Good Standing | Longmont | 1932 |
| THE McCARROLL DITCH COMPANY | Good Standing | Antonito | 1974 |
| THE MCKENZIE-WILDCAT DITCH COMPANY, LLC | Good Standing | Snowmass | 1991 |
| THE MEADOW ISLAND DITCH COMPANY NO. TWO (2) | Good Standing | Platteville | 1903 |
| THE MERRITT DITCH COMPANY | Voluntarily Dissolved | Lakewood | 1919 |
| THE MESA MCKENNA MUTUAL DITCH COMPANY | Good Standing | Buena Vista | 1995 |
| THE MESITA TOWNSHIP WATER USERS ASSOCIATION | Delinquent | Mesita | 1997 |
| THE MINNESOTA CANAL & RESERVOIR COMPANY | Good Standing | Paonia | 1903 |
| THE MINNESOTA CANAL EXTENSION DITCH CO | Merged | Paonia | 2001 |
| THE MODEL LAND & IRRIGATION COMPANY | Voluntarily Dissolved | Model | 1992 |
| The Monitor Ditch Company | Good Standing | Paonia | 1911 |
| THE MONTE VISTA WATER USERS ASSOCIATION | Good Standing | Monte Vista | 1930 |
| THE MORGAN-PREWITT RESERVOIR COMPANY | Good Standing | Fort Morgan | 1923 |
| THE MUTUAL HYDE DITCH COMPANY | Good Standing | Lamar | 1916 |
| THE NAUMAN LAKE RESERVOIR COMPANY | Good Standing | Greeley | 1894 |
| THE NEEDLE ROCK DITCH COMPANY | Good Standing | Crawford | 1890 |
| THE NEVADA DITCH HOLDING COMPANY | Good Standing | Denver | 1915 |
| THE NEW HINMAN DITCH COMPANY | Good Standing | Longmont | 1915 |
| THE NEW KELLOGG LATERAL DITCH COMPANY | Exists | 1932 | |
| THE NEW MERCER DITCH COMPANY | Good Standing | Severance | 1878 |
| THE NEW SAND CREEK LATERAL IRRIGATION COMPANY | Good Standing | Platteville | 1923 |
| The New Von Gohren Lateral Ditch Co. | Good Standing | Greeley | 1908 |
| THE NORTH DELTA IRRIGATION COMPANY | Good Standing | Delta | 1992 |
| THE NORTH FORK FARMER'S DITCH ASSOCIATION | Good Standing | Paonia | 1890 |
| THE NORTH FORK LATERAL DITCH COMPANY | Good Standing | Hotchkiss | 1914 |
| THE NORTH LAND WATER USERS ASSOCIATION | Administratively Dissolved | 1983 | |
| THE NORTH LOUDON DITCH AND RESERVOIR COMPANY | Good Standing | 1889 | |
| THE NORTH POUDRE IRRIGATION COMPANY | Good Standing | Wellington | 1901 |
| THE NORTH SIDE EXTENSION DITCH COMPANY | Merged | Lucerne | 1906 |
| THE NORTH SIDE LATERAL COMPANY | Merged | Lucerne | 1902 |
| THE NORTH TOLLGATE DITCH COMPANY | Good Standing | Longmont | 2004 |
| The O'Brien Ditch Lateral Corporation | Good Standing | Cortez | 2016 |
| THE OAK RIDGE PARK DITCH COMPANY | Good Standing | Meeker | 1969 |
| THE OLIGARCHY EXTENSION DITCH COMPANY | Good Standing | Longmont | 1921 |
| THE OLIGARCHY IRRIGATION COMPANY | Good Standing | Longmont | 1907 |
| THE ORIGINAL COTTONWOOD DITCH COMPANY | Good Standing | Boulder | 1890 |
| The Orlando Reservoir No. 2 Company, LLC | Delinquent | Denver | 2005 |
| THE OVERLAND DITCH AND RESERVOIR COMPANY | Good Standing | Hotchkiss | 1895 |
| The Ovid Reservoir Company | Delinquent | Julesburg | 2004 |
| THE OXFORD FARMERS DITCH COMPANY | Good Standing | Fowler | 1888 |
| THE PALMERTON CONSOLIDATED DITCH COMPANY | Good Standing | Longmont | 1928 |
| THE PAONIA DITCH COMPANY | Good Standing | Paonia | 1922 |
| The Patterson Cummins Ditch Association | Good Standing | Carbondale | 2009 |
| THE PENNOCK LATERAL DITCH COMPANY | Good Standing | Longmont | 1906 |
| THE PEOPLE'S DITCH COMPANY | Exists | 1904 | |
| THE PICKETWIRE DITCH CO., INC. | Good Standing | Trinidad | 1968 |
| THE PINE RIVER - BAYFIELD DITCH COMPANY | Good Standing | Ignacio | 1915 |
| THE PINE RIVER CANAL COMPANY | Good Standing | Farmington | 1907 |
| THE PIONEER DITCH COMPANY | Good Standing | Durango | 1925 |
| THE PLATTE VALLEY IRRIGATION COMPANY | Good Standing | Greeley | 1883 |
| THE PLEASANT VALLEY AND LAKE CANAL COMPANY | Good Standing | Fort Collins | 1879 |
| THE PLEASANT VALLEY RESERVOIR FISH AND DITCH COMPANY | Good Standing | Longmont | 1882 |
| THE PLUMB AND DAILEY DITCH COMPANY | Good Standing | Longmont | 1912 |
| THE PLUMB IRRIGATION COMPANY | Administratively Dissolved | Greeley | 1915 |
| The Price/Felix Borgi Combined Ditch Company, a Colorado Non-Profit Corporation | Good Standing | Steamboat Springs | 2007 |
| The Redmesa Reservoir and Ditch Comapny | Good Standing | Hesperus | 1923 |
| THE REED LATERAL DITCH AND PIPE LINE COMPANY | Good Standing | Longmont | 1892 |
| THE REORGANIZED FARMERS' DITCH COMPANY | Good Standing | Johnstown | 1983 |
| THE RESERVOIR MANAGEMENT COMPANY | Good Standing | Castle Rock | 2003 |
| THE RESERVOIR MANAGEMENT COMPANY | Administratively Dissolved | 1993 | |
| THE RESERVOIR PINES CONDOMINIUM ASSOCIATION | Good Standing | Greeley | 1999 |
| THE REVIVAL DITCH COMPANY | Exists | 1914 | |
| THE RHONE LATERAL DITCH COMPANY | Voluntarily Dissolved | Grand Junction | 1964 |
| THE RIVERSIDE DITCH AND ALLEN EXTENSION COMPANY | Good Standing | Buena Vista | 1991 |
| THE RIVERSIDE RESERVOIR AND LAND COMPANY | Good Standing | Fort Morgan | 1904 |
| THE ROBINSON DITCH COMPANY | Good Standing | Carbondale | 1975 |
| THE ROOT AND RATLIFF DITCH COMPANY | Good Standing | Mancos | 1947 |
| The Runyan Ditch Company | Good Standing | Longmont | 2005 |
| THE SADDLE MOUNTAIN HIGH LINE ENLARGEMENT AND EXTENSION DITCHCOMPANY | Good Standing | Crawford | 1912 |
| THE SAN JUAN AND DOLORES RIVERS WATER USERS ASSOCIATION | Exists | 1940 | |
| THE SAN LUIS PEOPLES DITCH COMPANY | Exists | 1967 | |
| THE SAN LUIS VALLEY CANAL COMPANY | Good Standing | Monte Vista | 1923 |
| THE SANCHEZ DITCH AND RESERVOIR COMPANY | Good Standing | Sanford | 1955 |
| THE SAND DIKE DITCH COMPANY | Good Standing | Ft Collins | 1994 |
| THE SEVEN LAKES RESERVOIR COMPANY | Good Standing | Greeley | 1900 |
| THE SHERWOOD RESERVOIR COMPANY | Good Standing | Severance | 1973 |
| THE SHORT DITCH COMPANY | Good Standing | Paonia | 1900 |
| The Shupe Mutual Water Association | Good Standing | Longmont | 2011 |
| THE SILVER RIDGE HOMEOWNERS AND DITCH ASSOCIATION | Good Standing | Montrose | 1979 |
| THE SIMONTON DITCH COMPANY | Delinquent | Denver | 1915 |
| THE SIX MILE NUMBER 2 RESERVOIR COMPANY | Merged | Longmont | 1907 |
| THE SLADE IRRIGATION COMPANY | Good Standing | Hesperus | 1907 |
| THE SMITH AND EMMONS DITCH COMPANY | Good Standing | Longmont | 1946 |
| The Smith and Goss Ditch Company | Administratively Dissolved | Boulder | 1970 |
| THE SNOWMASS DITCH COMPANY, LLC | Good Standing | Snowmass | 1991 |
| THE SODA LAKES RESERVOIR AND MINERAL WATER COMPANY | Good Standing | Denver | 1894 |
| THE SOUTH BOULDER AND BEAR CREEK DITCH COMPANY | Good Standing | Lafayette | 1891 |
| THE SOUTH BOULDER AND COAL CREEK 1ST EXTENSION DITCH COMPANY | Good Standing | Louisville | 1915 |
| THE SOUTH CLAY STREET WATER USERS ASSOCIATION | Delinquent | Englewood | 1968 |
| THE SOUTH FLAT DITCH COMPANY | Good Standing | Longmont | 1982 |
| THE SOUTH PLATTE DITCH COMPANY | Good Standing | Merino | 1881 |
| THE SPANISH PEAKS MUTUAL WATER COMPANY | Good Standing | Walsenburg | 1983 |
| THE ST. VRAIN RESERVOIR AND FISH COMPANY | Good Standing | Longmont | 1892 |
| THE STERLING IRRIGATION COMPANY | Good Standing | Sterling | 1915 |
| THE STEWART DITCH AND RESERVOIR COMPANY | Good Standing | Paonia | 1935 |
| The Stock Pond Ditch Company | Noncompliant | Silverthorne | 2025 |
| THE STULL DITCH CO | Good Standing | Hotchkiss | 1896 |
| THE SUMMIT RESERVOIR AND IRRIGATION COMPANY | Delinquent | Cortez | 1906 |
| The Suttle Ditch Company | Good Standing | Steamboat Springs | 2009 |
| THE SWEET-JESSUP CANAL COMPANY | Good Standing | Denver | 1903 |
| THE SWINK DITCH AND RESERVOIR COMPANY | Delinquent | Wiley | 1983 |
| THE TAYLOR & GILL DITCH COMPANY | Good Standing | Laporte | 1891 |
| THE TERRACE IRRIGATION COMPANY | Good Standing | Monte Vista | 1941 |
| THE TERRY LATERAL DITCH COMPANY | Good Standing | Longmont | 1884 |
| The Thompson Glen Ditch Company | Good Standing | Glenwood Springs | 1901 |
| THE TOWN-BOYD LATERAL COMPANY | Good Standing | Eaton | 1967 |
| THE TOWNSITE DITCH COMPANY | Good Standing | Hesperus | 1907 |
| THE TREANOR-ENTERPRISE DITCH COMPANY | Good Standing | Hesperus | 1968 |
| THE TROPIC DITCH COMPANY | Good Standing | Paonia | 1893 |
| THE TURNER DITCH COMPANY | Good Standing | Paonia | 1922 |
| THE TWIN LAKES RESERVOIR AND CANAL COMPANY | Good Standing | Ordway | 1897 |
| THE UNCOMPAHGRE VALLEY WATER USERS ASSOCIATION | Good Standing | Montrose | 1903 |
| THE UNION DITCH AND WATER COMPANY | Good Standing | Florence | 1914 |
| THE UNION DITCH COMPANY | Good Standing | Greeley | 1874 |
| THE UPPER BALDWIN DITCH COMPANY | Good Standing | Longmont | 1903 |
| THE UPPER PLATTE AND BEAVER CANAL COMPANY | Good Standing | Brush | 1888 |
| The Upper Walker Ditch Company | Good Standing | Hayden | 2009 |
| THE VOUGA RESERVOIR ASSOCIATION | Exists | 1955 | |
| THE WADE AND HIGHTOWER DITCH COMPANY | Good Standing | Paonia | 1928 |
| THE WADSWORTH DITCH COMPANY | Good Standing | Arvada | 1893 |
| The Walker Ditch Company | Noncompliant | Hayden | 2006 |
| THE WANNAMAKER DITCH COMPANY | Merged | Denver | 1910 |
| THE WARD CANAL COMPANY | Good Standing | Lakewood | 1901 |
| THE WARREN LAKE RESERVOIR COMPANY | Good Standing | Severance | 1879 |
| THE WARRIOR DITCH COMPANY | Delinquent | Denver | 1885 |
| THE WATER USERS ASSOCIATION OF DISTRICT NO. 6 | Good Standing | Longmont | 1972 |
| THE WEBBER DITCH COMPANY | Delinquent | Mancos | 1953 |
| THE WEST IRRIGATION COMPANY | Good Standing | Eaton | 1907 |
| THE WESTERN MUTUAL DITCH COMPANY | Good Standing | Platteville | 1909 |
| THE WHITEWATER MUTUAL DITCH COMPANY | Exists | 1973 | |
| THE WILDCAT RESERVOIR COMPANY, LLC | Good Standing | Snowmass Village | 1991 |
| The Wilson Acres Ditch Company | Good Standing | Loma | 2019 |
| THE WINDSOR RESERVOIR & CANAL COMPANY | Good Standing | Eaton | 1890 |
| THE WOOD-PERRY DITCH COMPANY | Good Standing | Ridgway | 1980 |
| Third Creek Estates Water Users Association LLC | Delinquent | Brighton | 2022 |
| Third Creek Estates Water Users' Association, Inc. | Delinquent | Brighton | 2022 |
| THIRD CREEK ESTATES WATER USERS' ASSOCIATION, INC. | Administratively Dissolved | Brighton | 1984 |
| Third Creek Water Users Association | Good Standing | Brighton | 2023 |
| Third Creek Water Users Association LLC | Voluntarily Dissolved | Brighton | 2020 |
| THOMPSON-EPPERSON DITCH COMPANY | Good Standing | Ignacio | 1930 |
| Three Draw Ditch LLC | Delinquent | Leadville | 2015 |
| Three Mile Water Users Association | Good Standing | Glenwood Springs | 2005 |
| Three Reservoirs Investments, LLC | Delinquent | Windsor | 2015 |
| Three Rivers Water Users Association, Inc. | Good Standing | Almont | 2007 |
| TIFFANY PARK DITCH COMPANY | Exists | 1963 | |
| TIJERAS IRRIGATING DITCH COMPANY | Exists | 1951 | |
| TILTON LATERAL, INC. | Good Standing | Grand Junction | 1991 |
| Timber Creek Water Users Association, Inc. | Voluntarily Dissolved | Breckenridge | 2009 |
| TODD CREEK FARMS MUTUAL WATER COMPANY | Delinquent | Castle Rock | 1996 |
| Totten Road Water Users Association LLC | Good Standing | Cortez | 2024 |
| TOWN AND COUNTRY MUTUAL WATER CO. | Exists | 1949 | |
| TRADING POST WATER USERS ASSOCIATION, INC. | Good Standing | Grand Junction | 1977 |
| TREMONT MUTUAL DITCH COMPANY | Exists | 1909 | |
| Tri-Lateral Commission Ltd. | Delinquent | Aurora | 2014 |
| TRIAL DITCH COMPANY | Exists | 1901 | |
| Trickle Ditch Company Inc | Delinquent | Cedaredge | 2015 |
| Trilateral Investment Trust Society and Associates, LLC | Delinquent | Aspen | 2014 |
| TRILBY LATERAL DITCH COMPANY | Good Standing | Fort Collins | 1897 |
| TRINCHERA IRRIGATION COMPANY | Delinquent | Blanca | 1944 |
| TRIPLE C RANCH WATER USERS | Good Standing | Rifle | 2003 |
| TROWEL LAND AND IRRIGATION COMPANY | Exists | 1907 | |
| Turner North 16 Lateral Group, Inc. | Voluntarily Dissolved | Paonia | 2018 |
| Turnout 114 Irrigation Lateral, Inc. | Good Standing | Grand Junction | 2024 |
| Turnout 81 Irrigation Lateral, Inc. | Good Standing | Grand Junction | 2025 |
| Turnout 88 Irrigation Lateral, Inc. | Good Standing | Grand Junction | 2024 |
| TV HILLS WATER USERS ASSOCIATION | Administratively Dissolved | 1997 | |
| TWENTY MILE RESERVOIR WATER COMPANY, LLC | Voluntarily Dissolved | Glenwood Springs | 1997 |
| Twenty Two Road Lateral, Inc. | Good Standing | Grand Junction | 2010 |
| Two Highline Canal LLC | Delinquent | Littleton | 2006 |
| Ultimate Collateral Protection, LLC | Delinquent | Lakewood | 2011 |
| Unilateral Products Limited | Delinquent | Denver | 2017 |
| Unilateral Solutions | Good Standing | Morrison | 2019 |
| UNION LATERAL IRRIGATING COMPANY | Good Standing | Lucerne | 1918 |
| UNION MUTUAL DITCH COMPANY | Good Standing | Brush | 1912 |
| UNION RESERVOIR COMPANY | Good Standing | Greeley | 1902 |
| United Milliken Reservoir Enterprise, L.L.C. | Good Standing | Greenwood Village | 2018 |
| UNITED STATES COMMITTEE ON IRRIGATION AND DRAINAGE | Good Standing | Sacramento | 1971 |
| UPPER HARMONY DITCH COMPANY | Exists | 1907 | |
| UPPER HIGHT DITCH COMPANY, INC. | Delinquent | Collbran | 2001 |
| UPPER OWL CREEK LATERAL COMPANY | Exists | 1928 | |
| UPPER ST. VRAIN WATER USERS ASSOCIATION | Administratively Dissolved | 1992 | |
| UPPER SURFACE CREEK DOMESTIC WATER USERS ASSOCIATION | Good Standing | Cedaredge | 1955 |
| Ute Reservoir, LLC | Good Standing | Naturita | 2025 |
| UTE TREE DITCH, INC. | Delinquent | Delta | 1989 |
| VALDEZ WATER USERS ASSOCIATION | Delinquent | Trinidad | 1973 |
| Vallecito Reservoir Ranch 2, LLC | Good Standing | Dallas | 2025 |
| Vallecito Reservoir Ranch, LLC | Good Standing | Dallas | 2024 |
| VALLEJO SUBDIVISION MUTUAL WATER CO. | Delinquent | 1953 | |
| VALLEY DITCH COMPANY | Exists | 1873 | |
| VALLEY VIEW IRRIGATION ASSOCIATION, INC. | Good Standing | Montrose | 1982 |
| VAN GORDER DITCH COMPANY | Good Standing | Windsor | 2019 |
| VENEZIA RESERVOIR & DITCH COMPANY | Exists | 1901 | |
| VERNAL MESA DITCH AND RESERVOIR COMPANY | Exists | 1904 | |
| VICTORY IRRIGATING CANAL COMPANY | Exists | 1933 | |
| VIEW RIDGE MUTUAL WATER COMPANY | Good Standing | Littleton | 1978 |
| VIEW RIDGE MUTUAL WATER COMPANY | Voluntarily Dissolved | 1963 | |
| Village at Wolf Creek Mutual Water Company | Delinquent | South Fork | 2004 |
| VILLAGE EAST IRRIGATION CO. | Good Standing | Grand Junction | 1974 |
| VINELAND LATERAL DITCH COMPANY | Exists | 1923 | |
| Virginia Mutual Ditch Company Inc. | Good Standing | Crawford | 2010 |
| VISTA IRRIGATION COMPANY | Good Standing | Lakewood | 1956 |
| VISTA SAN JUAN IRRIGATION WATER USERS ASSOCIATION | Good Standing | Montrose | 2002 |
| VON HAGEN DITCH AND RESERVOIR CO. | Good Standing | Ridgway | 1975 |
| W. R. BLOWER MUTUAL DITCH COMPANY, INC. | Good Standing | Longmont | 1984 |
| W. R. JONES DITCH COMPANY | Exists | 1944 | |
| WAGNER LATERAL DITCH COMPANY | Exists | 1908 | |
| WALDEN RESERVOIR COMPANY | Good Standing | Cowdrey | 1954 |
| WALSENBURG DITCH COMPANY | Exists | 1940 | |
| WARD REYNOLDS DITCH COMPANY | Good Standing | New Castle | 1980 |
| Ware and Hinds Ditch Association | Good Standing | Carbondale | 2010 |
| WARM SPRINGS OWNERS AND MUTUAL WATER ASSOCIATION | Good Standing | Fairplay | 1980 |
| WATER USERS OF LATERAL 95, INC. | Good Standing | Grand Junction | 1991 |
| WATER USERS OF LATERAL MC70, INC. | Good Standing | Grand Junction | 1996 |
| WATER-USERS OF LATERAL DITCH 110, INCORPORATED | Good Standing | Grand Junction | 1999 |
| WATROUS LATERAL DITCH COMPANY | Good Standing | 1961 | |
| WAVERLY LATERAL COMPANY | Good Standing | Fort Collins | 1920 |
| WEBER RESERVOIR COMPANY | Good Standing | Mancos | 1904 |
| WEDGWOOD WILDERNESS MUTUAL WATER COMPANY | Exists | 1962 | |
| WEIR AND JOHNSON DITCH AND RESERVOIR COMPANY | Exists | 1906 | |
| Welch Ditch Users Association | Good Standing | Golden | 2015 |
| WELCH DITCH USERS ASSOCIATION, INC. | Delinquent | Golden | 1996 |
| WELCH LATERAL DITCH COMPANY | Good Standing | Berthoud | 1909 |
| Weld County Underground Water Users Association, Inc. | Good Standing | Lucerne | 2009 |
| WELDON VALLEY DITCH COMPANY | Good Standing | Weldona | 1888 |
| WELLINGTON RESERVOIR COMPANY | Good Standing | Brighton | 1920 |
| WELLMAN DITCH COMPANY | Exists | 1878 | |
| Welton Ditch, LLC | Good Standing | Fowler | 2021 |
| WEST 56TH AVENUE DITCH COMPANY | Exists | Denver | 1947 |
| WEST ACRES LATERAL ASSOCIATION, INC. | Exists | 1947 | |
| WEST AULT WATER USERS' ASSOCIATION | Good Standing | Ault | 1995 |
| WEST BLOWER WATER USERS GROUP, INC. | Good Standing | Longmont | 1998 |
| WEST BRUSH LATERAL ASSOCIATION | Exists | 1915 | |
| WEST END HEAD GATE #10 LATERAL | Good Standing | Grand Junction | 2001 |
| WEST END IRRIGATION COMPANY | Exists | 1937 | |
| WEST GUNNISON DITCH ASSOCIATION | Administratively Dissolved | 1998 | |
| WEST LATERAL DITCH COMPANY | Exists | 1923 | |
| WEST MEADOWS MUTUAL DITCH COMPANY | Good Standing | Telluride | 1998 |
| WEST NUMA LATERAL ASSOCIATION | Exists | 1912 | |
| WEST OHIO WATER USERS ASSOCIATION, INC. | Delinquent | Lakewood | 1965 |
| WEST PUEBLO DITCH AND RESERVOIR COMPANY | Good Standing | Pueblo | 1888 |
| WEST RESERVOIR AND DITCH COMPANY | Good Standing | Hotchkiss | 1908 |
| WEST RHONE LATERAL DITCH COMPANY | Good Standing | Fruita | 2000 |
| WEST RIDGE IRRIGATION ASSOCIATION | Good Standing | Greeley | 1995 |
| West Side Canal, Inc. | Good Standing | Dixon | 2006 |
| West South Platte Water & Reservoir Company, LLLP | Noncompliant | Brighton | 2016 |
| WEST-BELLROSE LATERAL COMPANY | Exists | 1925 | |
| WESTERN MINI-RANCH IRRIGATION ASSOCIATION | Good Standing | Berthoud | 1983 |
| WESTMOOR ACRES IRRIGATION COMPANY | Good Standing | Lakewood | 1927 |
| Westview Estates Irrigation and Water Users Association | Good Standing | Erie | 2016 |
| WETMORE WELL NO. 1 WATER USERS ASSOCIATION | Good Standing | Wetmore | 1998 |
| WHEAT RIDGE MUTUAL LATERAL DITCH COMPANY | Exists | 1893 | |
| WHIPPLE LATERAL DITCH COMPANY | Good Standing | Berthoud | 1967 |
| WhistlePig Reservoir Engineering LLC | Voluntarily Dissolved | Centennial | 2023 |
| WHITE DITCH NO. 2, INCORPORATED | Good Standing | Salida | 1998 |
| WHITE DITCH NO. 3, INCORPORATED | Exists | Salida | 1997 |
| White Horse Springs Irrigation Group | Good Standing | Carbondale | 2009 |
| WHITE RIVER HIGHLAND DITCH COMPANY | Good Standing | Meeker | 1992 |
| WHITNEY IRRIGATING DITCH COMPANY | Exists | 1881 | |
| WIDE ACRES MUTUAL DITCH COMPANY | Voluntarily Dissolved | 1922 | |
| WIDEFIELD DITCH COMPANY | Exists | 1917 | |
| WIGHT LATERAL DITCH COMPANY | Good Standing | Lakewood | 1910 |
| Wigwam Mutual Water Company | Good Standing | Fountain | 2005 |
| Wildcat Reservoir Holdings, LLC | Good Standing | Snowmass | 2004 |
| WILKINS DITCH COMPANY | Good Standing | Alamosa | 1912 |
| WILLIAMS AND HAMM DITCH COMPANY | Good Standing | Salida | 1936 |
| WILLIAMS CANAL COMPANY | Good Standing | New Castle | 1975 |
| WILLIAMSON DITCH COMPANY | Exists | Longmont | 1919 |
| Williamson Lateral Ditch Company | Good Standing | Fort Collins | 2020 |
| Willis Ditch Company | Good Standing | Mancos | 2026 |
| WILLOW CREEK DITCH AND HERRICK DITCH COMPANY | Good Standing | Glenwood Springs | 2002 |
| WILLOW CREEK WATER USERS ASSOCIATION | Good Standing | Berthoud | 1976 |
| WILLOW HEIGHTS IRRIGATION COMPANY | Good Standing | Hotchkiss | 1994 |
| WILLOW HILLS WATER USERS ASSOCIATION, INC. | Good Standing | Boulder | 1976 |
| WILLOW PARK DITCH COMPANY | Good Standing | South Fork | 1999 |
| WILLOW SPRINGS MUTUAL WATER AND SANITATION COMPANY | Voluntarily Dissolved | Morrison | 1982 |
| Willow Wood Village Irrigation & Drainage Company, Inc. | Delinquent | Grand Junction | 2009 |
| Wilson Kniffen Lateral Replacement Group, Inc. | Good Standing | Golden | 2025 |
| WILSON SUMP WATER USERS ASSOCIATION | Good Standing | Gill | 2000 |
| Wilson-Kniffen Lateral Replacement Group, LLC | Voluntarily Dissolved | Golden | 2019 |
| WINDERMERE MUTUAL LATERAL ASSOCIATION | Exists | 1919 | |
| WINDMILL LATERAL COMPANY | Exists | 1928 | |
| WINDMILL RANCH MUTUAL LATERAL DITCH COMPANY | Good Standing | Salida | 2004 |
| Windsor Reservoir, Inc. | Delinquent | Eaton | 2005 |
| WISCONSIN DITCH COMPANY | Exists | 1946 | |
| WISWALL DITCH COMPANY | Exists | 1906 | |
| WOLFER DITCH COMPANY | Exists | 1904 | |
| WOLFF AND COULEHAN LATERAL DITCH COMPANY | Exists | 1907 | |
| Wolff Ditch Company | Good Standing | Arvada | 2010 |
| WOOD LAKE MUTUAL WATER & IRRIGATION CO. | Exists | 1958 | |
| WOODCHUCK DITCH COMPANY | Good Standing | Steamboat Springs | 1990 |
| WOODLAND WEST WATER USERS ASSOCIATION | Good Standing | Woodland Park | 1978 |
| WOODSIDE PARK WATER USERS ASSOCIATION | Good Standing | Pine | 1983 |
| WPI-Western Ditch CO LLC, Colorado Authority Relinquished June 1, 2022 | Withdrawn | New York | 2016 |
| Y & S RESERVOIR COMPANY | Exists | 1956 | |
| YEAGER SUBDIVISION II DITCH CORPORATION | Good Standing | Durango | 1995 |
| Yellowstone Lateral Ditch Company | Good Standing | Longmont | 2006 |
| YOUNG CREEK RESERVOIR COMPANY | Delinquent | 1897 | |
| Zinno Water Users' Association | Delinquent | Pueblo | 2009 |
| Zweck and Turner Ditch Company | Good Standing | Longmont | 2013 |
| District | Type | City | Since |
|---|---|---|---|
| Alpensee Water District | Water District | 1999 | |
| Animas-La Plata Water Conservancy District | Water Conservancy District | 1981 | |
| Basalt Water Conservancy District | Water Conservancy District | Glenwood Springs | 1964 |
| Baseline Water District | Water District | Boulder | 1965 |
| Beulah Water Works District | Water District | Beulah | 1938 |
| Bijou Irrigation District | Irrigation District | ||
| Blue Mountain Water District | Water District | 1977 | |
| Bluestone Water Conservancy District | Water Conservancy District | 1963 | |
| Bone Mesa Domestic Water District | Water District | 1924 | |
| Bostwick Park Water Conservancy District | Water Conservancy District | 1961 | |
| Brook Forest Water District | Water District | Evergreen | 1964 |
| Buffalo Creek Water District | Water District | 1999 | |
| Center of Colorado Water Conservancy District | Water Conservancy District | 1997 | |
| Central Colorado Water Conservancy District | Water Conservancy District | 1965 | |
| Central Weld County Water District | Water District | 1965 | |
| Chatfield South Water District | Water District | 1997 | |
| Cherry Creek Village Water District | Water District | 1963 | |
| Chipeta Water District | Water District | 1999 | |
| Clifton Water District | Water District | 1951 | |
| Collbran Conservancy District | Water Conservancy District | ||
| Colorado River Water Conservation District | Water Conservation District | ||
| Columbine Lake Water District | Water District | 1970 | |
| Costilla County Conservancy District | Conservancy District | San Luis | 1976 |
| Crawford Water Conservancy District | Water Conservancy District | 1957 | |
| Deer Creek Water District | Water District | 2008 | |
| Dolores Water Conservancy District | Water Conservancy District | Cortez | 1961 |
| East Boulder County Water District | Water District | 1999 | |
| East Dillon Water District | Water District | 1966 | |
| East Larimer County Water District | Water District | Fort Collins | 1962 |
| Florida Water Conservancy District | Water Conservancy District | 1960 | |
| Forest View Acres Water District | Water District | 1955 | |
| Fort Collins - Loveland Water District | Water District | 1971 | |
| Fruitland Mesa Water Conservancy District | Water Conservancy District | 1960 | |
| Grand Mesa Water Conservancy District | Water Conservancy District | 1961 | |
| Grandview Estates Rural Water Conservation District | Water Conservancy District | 2005 | |
| Great Northern Water Conservancy District | Water Conservancy District | 1963 | |
| Heeney Water District | Water District | Heeney | 2010 |
| Henrylyn Irrigation District | Irrigation District | ||
| Hidden Valley Water District | Water District | 2017 | |
| High View Water District | Water District | 1963 | |
| Highland Lakes Water District | Water District | 1977 | |
| Huerfano County Water Conservancy District | Water Conservancy District | 1971 | |
| Indian Hills Water District | Water District | Indian Hills | 1952 |
| Jackson County Water Conservancy District | Water Conservancy District | 1961 | |
| Julesburg Irrigation District | Irrigation District | ||
| Juniper Water Conservancy District | Water Conservancy District | 1966 | |
| Ken-Caryl West Ranch Water District | Water District | 1975 | |
| La Plata Archuleta Water District | Water District | 2008 | |
| La Plata Water Conservancy District | Water Conservancy District | 1944 | |
| Left Hand Water District | Water District | 1990 | |
| Little Thompson Water District | Water District | 1961 | |
| Longs Peak Water District | Water District | 1991 | |
| Lookout Mountain Water District | Water District | 1988 | |
| Lower Arkansas Valley Water Conservancy District | Water Conservancy District | 2002 | |
| Lower South Platte Water Conservancy District | Water Conservancy District | 1964 | |
| Mancos Water Conservancy District | Water Conservancy District | 1942 | |
| Meadowbrook Water District | Water District | 1963 | |
| Menoken Water District | Water District | 1997 | |
| Mesa County Irrigation District | Irrigation District | ||
| Mesa View Water District | Water District | 1978 | |
| Middle Park Water Conservancy District | Water Conservancy District | 1950 | |
| Montezuma County Water District No. 1 | Water District | 1960 | |
| Morgan County Quality Water District | Water District | 1976 | |
| Navajo Western Water District | Water District | 1974 | |
| North Carter Lake Water District | Water District | 1964 | |
| North Fork Water Conservancy District | Water Conservancy District | Hotchkiss | 1948 |
| North Shore Water District | Water District | ||
| North Sterling Irrigation District | Irrigation District | ||
| North Weld County Water District | Water District | 1962 | |
| Northern Colorado Water Conservancy District | Water Conservancy District | 1937 | |
| Northern Colorado Water Conservancy Municipal Subdistrict | Water Conservancy District | ||
| Olde Stage Water District | Water District | 1963 | |
| Orchard Mesa Irrigation District | Irrigation District | ||
| Palisade Irrigation District | Irrigation District | ||
| Paradox Valley Water Conservancy District | Water Conservancy District | ||
| Park Center Water District | Water District | Canon City | 1967 |
| Park Forest Water District | Water District | 1959 | |
| Parkville Water District | Water District | Leadville | 1961 |
| Penrose Water District | Water District | 1967 | |
| Pine Brook Water District | Water District | 1963 | |
| Pine Drive Water District | Water District | 1978 | |
| Pinewood Springs Water District | Water District | 1978 | |
| Pioneer Lookout Water District | Water District | 1964 | |
| Pot Hook Water Conservancy District | Water Conservancy District | 1960 | |
| Prairie View Ranch Water District | Water District | 2006 | |
| Pueblo Conservancy District | Conservancy District | ||
| Purgatoire River Water Conservancy District | Water Conservancy District | 1960 | |
| Rainbow Valley Water District | Water District | Divide | 1969 |
| Red Rock Valley Estates Water District | Water District | 1965 | |
| Republican River Water Conservation District | Water Conservation District | 2004 | |
| Ridgewood Water District | Water District | 1981 | |
| Rio Blanco Water Conservancy District | Water Conservancy District | 1977 | |
| Rio Grande Water Conservation District | Water Conservation District | 1967 | |
| Riverside Irrigation District | Irrigation District | ||
| Rock Creek Mesa Water District | Water District | 1956 | |
| Security Water District | Water District | 1954 | |
| Shaw Heights Water District | Water District | 1976 | |
| Silt Water Conservancy District | Water Conservancy District | 1963 | |
| Snake River Water District | Water District | Keystone | 1982 |
| Somerset Domestic Waterworks District | Water District | 1961 | |
| South Evergreen Water District | Water District | 1991 | |
| South Vale Water District | Water District | 1957 | |
| South-East Englewood Water District | Water District | 1956 | |
| Southeastern Colorado Water Conservancy District | Water Conservancy District | 1958 | |
| Southgate Water District | Water District | 1961 | |
| Southwestern Water Conservation District | Water Conservation District | ||
| St. Charles Mesa Water District | Water District | 1988 | |
| St. Vrain & Left Hand Water Conservancy District | Water Conservancy District | 1971 | |
| Stratmoor Hills Water District | Water District | 1956 | |
| Sunset Water District | Water District | 1947 | |
| Timber Creek Water District | Water District | 2009 | |
| Tri-County Water Conservancy District | Water Conservancy District | 1957 | |
| Turkey Canon Ranch Water District | Water District | 1998 | |
| Upper Arkansas Water Conservancy District | Water Conservancy District | Salida | 1979 |
| Upper Black Squirrel Creek Groundwater Management District | Groundwater Management District | ||
| Upper Gunnison River Water Conservancy District | Water Conservancy District | 1959 | |
| Upper South Platte Water Conservancy | Water Conservancy District | 1955 | |
| Upper Yampa Water Conservancy District | Water Conservancy District | Steamboat Springs | 1966 |
| Ute Pass Water District | Water District | 2022 | |
| Ute Water Conservancy District | Water Conservancy District | 1956 | |
| Valley at Winter Park Water District | Water District | 1999 | |
| Valley Water District | Water District | 1956 | |
| West Divide Water Conservancy District | Water Conservancy District | Rifle | 1964 |
| West Fort Collins Water District | Water District | Laporte | 1971 |
| Westcreek Lakes Water District | Water District | 1971 | |
| Westwood Lakes Water District | Water District | 1957 | |
| Wheat Ridge Water District | Water District | 1940 | |
| Willows Water District | Water District | 1974 | |
| Yellow Jacket Water Conservancy District | Water Conservancy District | 1959 |
A company's standing with the state is the first check on shares that come with a property. The full file adds the registered agent and filing details, and matches the company to the decreed rights on its canal where the state's records allow it, priced per report or monthly for unlimited use across your book.
Sources: Colorado Department of State (business entities) and Colorado Department of Local Affairs (special districts), both public domain, provided as-is. Drainage districts are not part of DOLA's open dataset and are not listed yet. Records last updated 17 September 2026.