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 100
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Rob Roy Albany County | 150 | 1986 | High | Fair |
| Ray Lake Fremont County | 30 | 1925 | High | Satisfactory |
| Pilot Butte Dam Fremont County | 64 | 1926 | High | Not Available |
| Pathfinder Dike Natrona County | 38 | 1911 | High | Not Available |
| Pathfinder Dam Natrona County | 214 | 1909 | High | Not Available |
| Padlock No. 1 A Five Mile Sheridan County | 40 | 1961 | High | Fair |
| O S W Fremont County | 28 | 1912 | High | Poor |
| North Spring Creek Carbon County | 31 | 1958 | High | Poor |
| New Fork Lake Sublette County | 37 | 1925 | High | Not Rated |
| Muddy Guard No. 2 South Dam Johnson County | 57 | 1976 | High | Fair |
| Middle Piney Lake Dam Sublette County | 24 | 1940 | High | Poor |
| Meeks Cabin Dam Uinta County | 185 | 1971 | High | Not Available |
| Meadowlark Washakie County | 33 | 1938 | High | Not Rated |
| Mcmurry No. 4 Natrona County | 78 | 2014 | High | Satisfactory |
| Lower Sunshine Park County | 162 | 1972 | High | Fair |
| Little Sage Creek Reservoir Carbon County | 26 | 1969 | High | Satisfactory |
| Little Robber Det. Dam X Carbon County | 48 | 1953 | High | Poor |
| Leavitt Big Horn County | 45 | 1956 | High | Poor |
| Laprele Converse County | 135 | 1909 | High | Unsatisfactory |
| Lake Owen Albany County | 30 | 1963 | High | Fair |
| Lake Desmet (South Dam) Johnson County | 120 | 1975 | High | Fair |
| Lake Desmet (North Dam) Johnson County | 120 | 1975 | High | Fair |
| Lake Desmet (A,B,C & Spillway Dikes) Johnson County | 120 | 1975 | High | Fair |
| Kortes Dam Carbon County | 244 | 1951 | High | Not Available |
| Keyhole Dam Crook County | 168 | 1952 | High | Not Available |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.