Upper Delta (North Offset Dam & West Offset Dam)
Wyoming — Sweetwater County — GREEN RIVER
Location
| State | Wyoming |
| County | Sweetwater |
| River | GREEN RIVER |
| Coordinates | 41.70760, -109.66940 |
Physical Characteristics
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 8,900 ft |
| NID Storage | 9,992 acre-ft |
| Max Storage | 9,992 acre-ft |
| Surface Area | 652 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Fair |
| EAP Status | Yes |
| Last Inspection | June 5, 2025 |
| Inspection Frequency | 3 |
Dam Information
| Year Completed | 2013 |
| Primary Purpose | Tailings |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | Sisecam |
| Other Name | No. 1 Tailings |
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.