69Total Dams
10High Hazard
6Significant
Dam Safety in Fremont County, Wyoming
Fremont County has 69 dams tracked in the National Inventory of Dams. Of these, 10 are classified as high hazard — meaning failure would probably cause loss of human life. Another 6 carry a significant hazard classification. Currently, 25 dams have a condition assessment of poor or unsatisfactory.
The average dam in Fremont County is 73 years old. The most common purpose is irrigation. The tallest dam is Boysen Dam at 220 ft.
Explore more: Oldest dams in Wyoming · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Boysen Dam | High | Not assessed | 220 | Flood Risk Reduction | 1952 |
| Washakie | High | Satisfactory | 93 | Irrigation | 1935 |
| Bull Lake Dam | High | Not assessed | 81 | Flood Risk Reduction | 1938 |
| Shoshone Lake | High | Fair | 46 | Irrigation | 1959 |
| Enlargement of Worthen Meadows | High | Not assessed | 46 | Water Supply | 1958 |
| Snyder Creek Det Dam X | High | Unsatisfactory | 38 | Flood Risk Reduction | 2003 |
| Ray Lake | High | Satisfactory | 30 | Irrigation | 1925 |
| Enterprise | High | Fair | 29 | Irrigation | 1940 |
| O S W | High | Poor | 28 | Irrigation | 1912 |
| Pilot Butte Embankment 3 | High | Not assessed | 12 | Irrigation | 1926 |
| Upper Rock Creek | Significant | Fair | 101 | Other | 1961 |
| Chittim | Significant | Unsatisfactory | 33 | Fish and Wildlife Pond | 2003 |
| Okie | Significant | Poor | 26 | Irrigation | 1898 |
| Christina | Significant | Not assessed | 22 | Irrigation | 1942 |
| Grandy | Significant | Fair | 18 | Irrigation | 1957 |
| Upper Goose Pond West Dike | Significant | Not assessed | 7 | Irrigation | |
| Mcintosh No. 1 | Low | Fair | 80 | Tailings | 1979 |
| Jenson | Low | Fair | 44 | Flood Risk Reduction | 1979 |
| Mcintosh No.2 Enlargement | Low | Fair | 41 | ||
| Bonneville | Low | Poor | 40 | Other | 1914 |
| Waterworks No. 3 | Low | Poor | 40 | Irrigation | 1959 |
| Alkali Dam | Low | Unsatisfactory | 35 | Fire Protection, Stock, Or Small Fish Pond | 1964 |
| Hudson | Low | Poor | 33 | Irrigation | 1913 |
| Bitterroot No. 1 | Low | Poor | 33 | Irrigation | 1977 |
| Johnson | Low | Poor | 32 | Irrigation | 1959 |
| Carr Springs | Low | Fair | 30 | Water Supply | |
| Rock | Low | Fair | 30 | Flood Risk Reduction | 1978 |
| Rongis Detention Dam | Low | Poor | 29 | Fire Protection, Stock, Or Small Fish Pond | 1952 |
| Wind River Diversion Dike | Low | Not assessed | 27 | Irrigation | 1923 |
| Middle Cottonwood Dam | Low | Not assessed | 27 | Fish and Wildlife Pond | 1974 |
| Bonneville Reservoir | Low | Poor | 26 | Fire Protection, Stock, Or Small Fish Pond | 1941 |
| Rachou | Low | Poor | 25 | Irrigation | 1940 |
| Silver Creek Reservoir | Low | Fair | 25 | Fire Protection, Stock, Or Small Fish Pond | 1941 |
| North Logan Det. Dam | Low | Poor | 25 | Fire Protection, Stock, Or Small Fish Pond | 1952 |
| Homestead Flat Detention Dam | Low | Poor | 24 | Water Supply | |
| Logan Jct. Detention Dam | Low | Unsatisfactory | 23 | Fire Protection, Stock, Or Small Fish Pond | 1952 |
| Diamond Spring Dam | Low | Fair | 22 | Fire Protection, Stock, Or Small Fish Pond | 1994 |
| Natural Bridge | Low | Poor | 21 | Fire Protection, Stock, Or Small Fish Pond | |
| Debatable | Low | Poor | 21 | Irrigation | 1919 |
| Antelope Springs Dam | Low | Not assessed | 21 | Fire Protection, Stock, Or Small Fish Pond | 1940 |
| Hays | Low | Fair | 20 | Irrigation | 1918 |
| Fraizer Diversion Dam #3 | Low | Not assessed | 20 | Fire Protection, Stock, Or Small Fish Pond | 1949 |
| Pacific No. 2 | Low | Poor | 18 | Irrigation | 1922 |
| Battle Axe | Low | Fair | 17 | Irrigation | 1916 |
| Prairie | Low | Poor | 17 | Irrigation | 1915 |
| Slough Reservoir | Low | Fair | 16 | Fire Protection, Stock, Or Small Fish Pond | 1939 |
| Nielson | Low | Poor | 15 | Fire Protection, Stock, Or Small Fish Pond | 1934 |
| Lander Wastewater Treatment | Low | Fair | 14 | Other | 1994 |
| Lander Wastewater Treatment | Low | Fair | 14 | Other | 1994 |
| Upper Cottonwood Dam | Low | Not assessed | 14 | Fish and Wildlife Pond | 1972 |
| Peterson Area-ocean Lake Habitat Unit Dam | Low | Not assessed | 14 | Fish and Wildlife Pond | 1993 |
| Lander Wastewater Treatment | Low | Fair | 13 | Other | 1994 |
| Lake Cameahwait Dam | Low | Not assessed | 13 | Fire Protection, Stock, Or Small Fish Pond | 1973 |
| Clay Bank Reservoir | Low | Fair | 12 | Fire Protection, Stock, Or Small Fish Pond | 1952 |
| Sand Mesa Dam 1 | Low | Not assessed | 12 | Fish and Wildlife Pond | 1976 |
| Trail Lake Storage Dam | Low | Poor | 11 | Irrigation | 1947 |
| Sand Mesa Dam 2 | Low | Not assessed | 11 | Fish and Wildlife Pond | 1976 |
| Lander Wastewater Treatment | Low | Fair | 10 | Other | 1994 |
| Ocean Lake Habitat No. 5 | Low | Poor | 9 | Fish and Wildlife Pond | 1973 |
| Ocean Lake Habitat No. 6 | Low | Poor | 9 | Fish and Wildlife Pond | 1973 |
| Fiddlers Lake | Low | Not assessed | 8 | Recreation | 1936 |
| Rigbys | Low | Fair | 8 | Irrigation | 1905 |
| Lower Goose Pond | Low | Not assessed | 8 | Irrigation | |
| Ocean Lake Habitat No. 2 | Low | Fair | 7 | Fish and Wildlife Pond | 1973 |
| Ocean Lake Habitat No. 2 Dike a | Low | Fair | 7 | Fish and Wildlife Pond | 1973 |
| Trail Lake Control Dam | Low | Poor | 7 | Irrigation | 1947 |
| Washakie Dike No. 3 | Undetermined | Satisfactory | 52 | Irrigation | 1935 |
| Washakie Dike No. 1 | Undetermined | Satisfactory | 42 | Irrigation | 1935 |
| Washakie Dike No. 2 | Undetermined | Satisfactory | 34 | Irrigation | 1935 |