Seniority, absolute versus conditional water, and decreed uses for all 3,403 water rights on record in Alamosa County, taken from the state's own records. Priority dates run from 1865-12-31 to 2004-12-28.
CFS on record: 3,512.4 absolute · 301.9 conditional. Flow (CFS) and volume (AF) are never added together.
Worth knowing: 16 rights in Alamosa County carry a conditional portion, water that is decreed but not yet perfected. Absolute and conditional are not the same asset.
In a dry year the oldest rights are served first. This is how Alamosa County's rights are distributed.
| Era | Rights | Share | |
|---|---|---|---|
| pre-1900 | 198 | 5.8% | |
| 1900-1949 | 1,530 | 45.0% | |
| 1950-1969 | 1,136 | 33.4% | |
| 1970-1999 | 530 | 15.6% | |
| 2000+ | 9 | 0.3% |
| Decreed use | Rights |
|---|---|
| Irrigation | 1,862 |
| Domestic | 1,445 |
| Stock | 1,124 |
| Commercial | 167 |
| Municipal | 54 |
| Recreation | 43 |
Ranked by the state's own priority administration number, the figure DWR uses to order rights by seniority.
| Priority | Structure | Source | Amount | Uses | Verify |
|---|---|---|---|---|---|
| 1865-12-31 | W2171 WELL NO 02 | GROUNDWATER: CONFINED SAN LUIS VALLEY | 0.011 CFS | Domestic, Stock | state record |
| 1870-03-01 | HANSEN LA JARA OVFL D 3 | LA JARA CREEK | 21.28 CFS | Irrigation | state record |
| 1870-03-01 | SWAMP D | LA JARA CREEK | 2.49 CFS | Irrigation | state record |
| 1873-04-01 | MEYER D | NORTH ZAPATA CREEK | 7.0 CFS | Irrigation, Municipal, Commercial, Recreation, Domestic, Augmentation, Recharge | state record |
| 1874-05-20 | TRUJILLO D | SAND CREEK | 13.33 CFS | Irrigation | state record |
| 1874-09-20 | MEADOW OVERFLOW | RIO GRANDE | 3.2 CFS | Irrigation | state record |
| 1875-04-01 | EXCELSIOR D | RIO GRANDE | 8.4 CFS | Irrigation | state record |
| 1875-05-10 | LOS OJOS D | BIG SPRING CREEK | 33.33 CFS | Irrigation | state record |
| 1875-12-31 | W1447 WELL NO 03 | GROUNDWATER: CONFINED SAN LUIS VALLEY | 0.089 CFS | Domestic, Stock | state record |
| 1877-05-01 | HULL D | BIG SPRING CREEK | 16.66 CFS | Irrigation | state record |
This page is the summary. The full file for Alamosa County covers every one of the 3,403 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.
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Records last updated 10 September 2026.