Wyoming Dams
1,490 dams tracked by the National Inventory of Dams
Total Dams
1,490
High Hazard
100
6.7%
Poor / Unsatisfactory
576
Average Age
62 yrs
Hazard Classification
High100 (6.7%)
Significant104 (7.0%)
Low1,283 (86.1%)
Condition Assessment
Satisfactory45 (3.0%)
Fair752 (50.5%)
Poor / Unsatisfactory576 (38.7%)
Not Rated117 (7.9%)
Federal
193
State
22
Local
82
Private
1,174
Tallest Dams
- Buffalo Bill Dam350 ft
- Seminoe Dam295 ft
- Alcova Dam265 ft
- Kortes Dam244 ft
- Boysen Dam220 ft
High Hazard Dams
- Buffalo Bill DamHigh
- Seminoe DamHigh
- Alcova DamHigh
- Kortes DamHigh
- Boysen DamHigh
Poor Condition Dams
- LapreleUnsatisfactory
- Upper Van TassellPoor
- Hawk SpringsPoor
- EastgatePoor
- BischoffPoor
All Dams in Wyoming
Showing 26–50 of 104
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Sand Lake Carbon County | 22 | 1956 | Significant | Fair |
| Reynolds Piney Creek Diversion Dam Johnson County | 22 | 1969 | Significant | Not Rated |
| R&D Brine Pond Sweetwater County | 21 | 2022 | Significant | Satisfactory |
| Raw Water Reservoir Sweetwater County | 42 | 2022 | Significant | Satisfactory |
| Rawlins Wastewater Treatment Plant (St2) Carbon County | 17 | 1978 | Significant | Fair |
| Rawlins Wastewater Treatment Plant (St1) Carbon County | 17 | 1978 | Significant | Fair |
| Rawlins Wastewater Treatment Plant (S 2) Carbon County | 17 | 1978 | Significant | Fair |
| Rawlins Wastewater Treatment Plant (S 1) Carbon County | 17 | 1978 | Significant | Fair |
| Rawlins Wastewater Treatment Plant (A 3) Carbon County | 17 | 1978 | Significant | Fair |
| Rawlins Wastewater Treatment Plant (A 2) Carbon County | 17 | 1978 | Significant | Fair |
| Rawlins Wastewater Treatment Plant (A 1) Carbon County | 17 | 1978 | Significant | Fair |
| Railroad Campbell County | 39 | — | Significant | Fair |
| Quinn No. 1 Niobrara County | 30 | 1959 | Significant | Fair |
| Prince No.1 Park County | 19 | 1993 | Significant | Poor |
| Pond 4 (Dam 2b) Sweetwater County | 39 | 1992 | Significant | Not Rated |
| Pond 4 (Dam 2a) Sweetwater County | 39 | 1992 | Significant | Fair |
| Pond 4 (Dam 2) Sweetwater County | 110 | 1992 | Significant | Not Rated |
| Pole Creek Irrigation Johnson County | 47 | 1972 | Significant | Poor |
| Polaris Laramie County | 51 | 1909 | Significant | Poor |
| Pierce Carbon County | 30 | 1918 | Significant | Fair |
| Paterson Lake Uinta County | 14 | 1907 | Significant | Poor |
| Painter Uinta County | 28 | 1952 | Significant | Fair |
| One Mile Laramie County | 35 | 1907 | Significant | Poor |
| Okie Fremont County | 26 | 1898 | Significant | Poor |
| Oak Creek Crook County | 41 | 1976 | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.