Main
Colorado — Jefferson County — WEIR GULCH-OS
Location
| State | Colorado |
| County | Jefferson |
| River | WEIR GULCH-OS |
| Coordinates | 39.69413, -105.11445 |
Physical Characteristics
| NID Height | 46 ft |
| Dam Height | 45 ft |
| Dam Length | 1,081 ft |
| NID Storage | 1,320 acre-ft |
| Max Storage | 1,320 acre-ft |
| Surface Area | 39 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Satisfactory |
| EAP Status | Yes |
| Last Inspection | March 30, 2022 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1908 |
| Primary Purpose | Irrigation |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | AGRICULTURAL DITCH & RESERVOIR COMPANY (ACKER, PET |
| Other Name | Big Osner |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.