Jefferson County
24 Colorado mutual ditch and reservoir companies have DWR-verified water structures in Jefferson County, the oldest decreed right dating to 1860; 5 are DARCA members. 45 companies list a registered address in a city located in — or partly in — Jefferson County.
| Company | Standing | Verified structures | Relationship |
|---|---|---|---|
| Agricultural Ditch And Reservoir Company | In good standing | 1 WDID | Operates structures in Jefferson County |
| Alkali Ditch No. 2 Inc. | In good standing | — | Registered in Littleton (Littleton spans Arapahoe, Jefferson & Douglas counties) |
| Allen Ditch Company | In good standing | — | Registered in Westminster (Westminster spans Jefferson & Adams counties) |
| Bayou Ditch Association | In good standing | — | Registered in Arvada (Arvada spans Jefferson & Adams counties) |
| Bergen Ditch & Reservoir Company | In good standing | 1 WDID | Operates structures in Jefferson County Registered in Littleton (Littleton spans Arapahoe, Jefferson & Douglas counties) |
| Bluff Ditch Association | "Exists" (as recorded by the Secretary of State) | 1 WDID | Operates structures in Jefferson County |
| Brookside Ditch Co. | In good standing | 1 WDID | Operates structures in Jefferson County Registered in Wheat Ridge |
| Brown And Baugh Ditch Company | In good standing | 1 WDID | Operates structures in Jefferson County Registered in Arvada (Arvada spans Jefferson & Adams counties) |
| Clark Lateral Ditch Company | In good standing | — | Registered in Arvada (Arvada spans Jefferson & Adams counties) |
| Consolidated Juchem Ditch And Reservoir Company | In good standing | — | Registered in Arvada (Arvada spans Jefferson & Adams counties) |
| Consolidated Mutual Water Company | In good standing | 3 WDIDs | Operates structures in Jefferson County |
| Deer Trail Ditch Company | In good standing | — | Registered in Golden |
| Denver-View Reservoir And Irrigation Company | "Exists" (as recorded by the Secretary of State) | 1 WDID | Operates structures in Jefferson County |
| Farmers High Line Canal And Reservoir Company | In good standing | 1 WDID | Operates structures in Jefferson County Registered in Westminster (Westminster spans Jefferson & Adams counties) |
| Farmers Reservoir And Irrigation Company | In good standing | 6 WDIDs | Operates structures in Adams, Weld, Jefferson and Boulder counties |
| Fulton Extension Ditch Company | In good standing | — | Registered in Lakewood |
| Golden Canal And Reservoir Company | In good standing | 1 WDID | Operates structures in Jefferson County Registered in Lakewood |
| Grant Reservoir Company | In good standing | — | Registered in Evergreen |
| Green Mountain Irrigation Company | In good standing | — | Registered in Lakewood |
| Harriman Ditch Company | In good standing | 1 WDID | Operates structures in Jefferson County |
| Harriman Mutual Reservoir Company | In good standing | — | Registered in Littleton (Littleton spans Arapahoe, Jefferson & Douglas counties) |
| Hek Headgate #22 Lateral Ditch LLC | Delinquent | — | Registered in Arvada (Arvada spans Jefferson & Adams counties) |
| Highland Lake Reservoir Company | In good standing | — | Registered in Westminster (Westminster spans Jefferson & Adams counties) |
| Interlocken Irrigation Company, Inc. | In good standing | — | Registered in Westminster (Westminster spans Jefferson & Adams counties) |
| Johnson And Edwards Ditch Company | In good standing | — | Registered in Lakewood |
| Johnson Mutual Ditch Company | In good standing | — | Registered in Littleton (Littleton spans Arapahoe, Jefferson & Douglas counties) |
| Joseph W. Bowles Reservoir Company | In good standing | 1 WDID | Operates structures in Jefferson County Registered in Evergreen |
| Kawanee Gardens Irrigation Company | In good standing | — | Registered in Lakewood |
| Kelton Heights Lateral Ditch Association | In good standing | — | Registered in Lakewood |
| Kershaw Ditch Company | In good standing | — | Registered in Westminster (Westminster spans Jefferson & Adams counties) |
| La Vega Ditch Company | Delinquent | — | Registered in Lakewood |
| Lakewood Acres Irrigation Company | In good standing | — | Registered in Lakewood |
| Last Chance Ditch Company #2 | In good standing | 1 WDID | Operates structures in Jefferson County |
| Lee & Baugh Ditch Company | In good standing | — | Registered in Golden |
| Lee Lateral Ditch Company | In good standing | — | Registered in Wheat Ridge |
| Long Lake Reservoirs Inc. | "Exists" (as recorded by the Secretary of State) | 3 WDIDs | Operates structures in Jefferson County |
| Manhart Ditch Company | "Exists" (as recorded by the Secretary of State) | 1 WDID | Operates structures in Jefferson County |
| Meadowview Mutual Reservoir Company | Delinquent | 1 WDID | Operates structures in Jefferson County |
| Merritt Ditch Company | — | — | Registered in Lakewood |
| Mountain Mutual Reservoir Company | In good standing | — | Registered in Evergreen |
| Nevada Ditch Holding Company | In good standing | 1 WDID | Operates structures in Jefferson County |
| No. 280 Lateral Ditch Company | Delinquent | — | Registered in Lakewood |
| North Henry Lee Reservoir Improvement Corporation | In good standing | 1 WDID | Operates structures in Jefferson County Registered in Wheat Ridge |
| Oulette Ditch Company | In good standing | — | Registered in Wheat Ridge |
| Patrick/Bennett Reservoir Company | In good standing | — | Registered in Littleton (Littleton spans Arapahoe, Jefferson & Douglas counties) |
| Prospect 55 Lateral Ditch Company | In good standing | — | Registered in Wheat Ridge |
| School Lateral Ditch Company | In good standing | — | Registered in Lakewood |
| Smart Reservoir and Irrigation, Incorporated | In good standing | 1 WDID | Operates structures in Jefferson County Registered in Arvada (Arvada spans Jefferson & Adams counties) |
| The Ward Canal Company | In good standing | 1 WDID | Operates structures in Jefferson County Registered in Lakewood |
| Vista Irrigation Company | In good standing | — | Registered in Lakewood |
| Wadsworth Ditch Company | In good standing | 2 WDIDs | Operates structures in Jefferson County Registered in Arvada (Arvada spans Jefferson & Adams counties) |
| Warrior Ditch Company | Delinquent | 2 WDIDs | Operates structures in Jefferson County |
| Welch Ditch Users Association | In good standing | — | Registered in Golden |
| Wellington Reservoir Company | In good standing | 1 WDID | Operates structures in Jefferson County |
| Westmoor Acres Irrigation Company | In good standing | — | Registered in Lakewood |
| Wight Lateral Ditch Company | In good standing | — | Registered in Lakewood |
| Wilson Kniffen Lateral Replacement Group, Inc. | In good standing | — | Registered in Golden |
| Wolff Ditch Company | In good standing | 2 WDIDs | Operates structures in Jefferson County Registered in Arvada (Arvada spans Jefferson & Adams counties) |
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.