Alamosa County
6 Colorado mutual ditch and reservoir companies have DWR-verified water structures in Alamosa County, the oldest decreed right dating to 1872. 9 companies list a registered address in a city located in — or partly in — Alamosa County.
| Company | Standing | Verified structures | Relationship |
|---|---|---|---|
| Billings Ditch Company | In good standing | — | Registered in Alamosa |
| Capulin Ditch Company | In good standing | — | Registered in Alamosa |
| Carmel Drainage Ditch Users Association | In good standing | — | Registered in Alamosa |
| Centennial Irrigating Ditch Company | — | — | Registered in Alamosa |
| Commonwealth Irrigation Company | In good standing | — | Registered in Alamosa |
| Costilla Ditch Company | "Exists" (as recorded by the Secretary of State) | 1 WDID | Operates structures in Alamosa County |
| Excelsior Ditch Company | Delinquent | 1 WDID | Operates structures in Alamosa County |
| Hickory Jackson Ditch Company | In good standing | 1 WDID | Operates structures in Alamosa County Registered in Alamosa |
| Independent Ditch Company | — | 1 WDID | Operates structures in Alamosa County |
| Prairie Ditch Company (The) (Water) | In good standing | 2 WDIDs | Operates structures in Rio Grande and Alamosa counties Registered in Mosca |
| Shaw Reservoir Company | — | — | Registered in Alamosa |
| Wilkins Ditch Company | In good standing | 1 WDID | Operates structures in Alamosa County Registered in Alamosa |
Scroll the table sideways to see every column.
Standing is from the Colorado Secretary of State as of August 3, 2026: In good standing and “Exists” are both current statuses; Delinquent most commonly follows a missed Periodic Report (other causes exist — see the delinquency guide), usually fixable in one sitting; — means the company has no row in the current Secretary of State pull. Full explanation: what this check tells you.