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 601–625 of 1,283
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| John Arambel Sublette County | 22 | — | Low | Fair |
| John Beaton Natrona County | 37 | 1941 | Low | Poor |
| John L. Campbell No. 1 Carbon County | 18 | 1912 | Low | Poor |
| Johnson Fremont County | 32 | 1959 | Low | Poor |
| Johnson Albany County | 35 | 1962 | Low | Poor |
| Johnson #3 Niobrara County | 22 | 1944 | Low | Poor |
| Johnson 41-23-4377 Johnson County | 29 | 2005 | Low | Fair |
| Johnson No. 1 Niobrara County | 30 | 1916 | Low | Poor |
| Johnson No. 1 Natrona County | 20 | 1914 | Low | Fair |
| John Stock Johnson County | 25 | 1970 | Low | Fair |
| J.O. Mcdonald Wetland Pond #2 Crook County | 10 | 2002 | Low | Fair |
| Jordan Niobrara County | 26 | 1952 | Low | Poor |
| Jordan No. 1 Laramie County | 36 | 1955 | Low | Fair |
| Jordan No. 9 Campbell County | 29 | 2005 | Low | Fair |
| Joss Niobrara County | 24 | 1918 | Low | Poor |
| Joy No. 1 Converse County | 25 | 1984 | Low | Satisfactory |
| J. Smith Washakie County | 14 | 1943 | Low | Fair |
| July Campbell County | 26 | 2005 | Low | Fair |
| Kafka No. 1 Albany County | 22 | 1969 | Low | Fair |
| Kajan Diversion Crook County | 19 | 1965 | Low | Fair |
| Kane 01-07-5781 Sheridan County | 46 | 2007 | Low | Fair |
| Kane 03-19-5781 Sheridan County | 32 | 2008 | Low | Fair |
| Kane Cemetery Big Horn County | 16 | 1988 | Low | Poor |
| Karl Johnson County | 30 | 1957 | Low | Fair |
| Karl Johnson County | 33 | 1958 | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.