Western Water Data

Jefferson County, Colorado — water rights summary

Seniority, absolute versus conditional water, and decreed uses for all 4,544 water rights on record in Jefferson County, taken from the state's own records. Priority dates run from 1859-11-01 to 2024-11-18.

At a glance

4,544water rights on record
370,649acre-feet absolute (perfected)
749,425acre-feet conditional (decreed, not yet perfected)
6.5%of rights carry a conditional portion

CFS on record: 19,353.4 absolute · 1,532.2 conditional. Flow (CFS) and volume (AF) are never added together.

Risk: absolute vs conditional

Worth knowing: Jefferson County has about 2.0x more acre-feet decreed as conditional than as absolute. Conditional water is decreed on paper but not yet put to beneficial use. A buyer or lender who does not separate the two is valuing a different asset than the one on the ground.

Seniority by era

In a dry year the oldest rights are served first. This is how Jefferson County's rights are distributed.

EraRightsShare
pre-19001,22527.0%
1900-194986319.0%
1950-19691,11224.5%
1970-199995120.9%
2000+3938.6%

What the water is decreed for

Decreed useRights
Domestic2,691
Irrigation2,001
Municipal1,196
Augmentation1,026
Commercial976
Stock947

The ten most senior rights on record

Ranked by the state's own priority administration number, the figure DWR uses to order rights by seniority.

PriorityStructureSourceAmount UsesVerify
1860-02-25FARMERS HIGHLINE CANALCLEAR CREEK0.275 CFSIrrigation, Municipal, Commercial, Industrial, Recreation, Fishery, Domestic, Augmentation, Other, Wildlife, All beneficial usesstate record
1860-02-25WADSWORTH DITCHCLEAR CREEK2.3142 CFSIrrigation, Municipalstate record
1860-05-01SAWMILL SPRG WELL 161480GROUNDWATER: CLEAR CREEK0.009 CFSFire, Domestic, Stockstate record
1860-05-15AGRICULTURAL DITCHCLEAR CREEK1.64 CFSStorage, Irrigation, Municipal, Commercial, Industrial, Recreation, Fishery, Fire, Domestic, Augmentation, Wildlife, All beneficial usesstate record
1860-05-15GOLDEN CITY WATER WORKS PIPELINECLEAR CREEK0.078 CFSIrrigation, Municipal, Commercial, Industrial, Recreation, Fire, Domestic, Otherstate record
1860-05-15LEES BAUGH DITCHCLEAR CREEK3.282 CFSIrrigationstate record
1860-05-15AGRICULTURAL DITCHCLEAR CREEK1.64 CFSStorage, Irrigation, Municipal, Commercial, Industrial, Recreation, Fishery, Fire, Domestic, Augmentation, Change of use return flow, Wildlife, All beneficial usesstate record
1860-05-16FARMERS HIGHLINE CANALCLEAR CREEK1.0 CFSStorage, Irrigation, Municipal, Commercial, Industrial, Recreation, Fishery, Fire, Domestic, Stock, Augmentation, Change of use return flow, Other, Wildlife, All beneficial usesstate record
1860-05-16SOUTH SIDE DITCHCLEAR CREEK1.0 CFSIrrigationstate record
1860-05-19AGRICULTURAL DITCHCLEAR CREEK0.675 CFSStorage, Irrigation, Municipal, Commercial, Industrial, Recreation, Fishery, Fire, Domestic, Augmentation, Wildlife, All beneficial usesstate record

Need this for a deal?

This page is the summary. The full file for Jefferson County covers every one of the 4,544 rights, with its priority date, seniority number, absolute and conditional amounts, decreed uses and a link to each official record, as a spreadsheet.

Buying, lending on, or listing irrigated ground here? Ask for the county file, or for a single property's water summary. The first one is on me.

erik@westernwaterdata.com

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Records last updated 10 September 2026.