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Browse Dams

1,498 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 1,498 dams from the NID database. Each record includes dam name, location, physical dimensions, hazard potential classification, condition assessment, purpose, owner information, and emergency action plan status. Use the filters below to search by state, hazard level, condition, or keyword.

Name State County Height (ft) Hazard Condition Year Purpose
Buffalo Bill Dam Wyoming Park 350 High Not Available 1910 Fish and Wildlife Pond
Seminoe Dam Wyoming Carbon 295 High Not Available 1938 Hydroelectric
Alcova Dam Wyoming Natrona 265 High Not Available 1938 Hydroelectric
Kortes Dam Wyoming Carbon 244 High Not Available 1951 Hydroelectric
Boysen Dam Wyoming Fremont 220 High Not Available 1952 Flood Risk Reduction
Pathfinder Dam Wyoming Natrona 214 High Not Available 1909 Hydroelectric
Anchor Dam Wyoming Hot Springs 208 High Not Available 1960 Irrigation
Greybull Valley (1st Enl.) Wyoming Park 207 High Fair 2000 Irrigation
Glendo Dam Wyoming Platte 196 High Not Available 1958 Flood Risk Reduction
Meeks Cabin Dam Wyoming Uinta 185 High Not Available 1971 Irrigation
Keyhole Dam Wyoming Crook 168 High Not Available 1952 Flood Risk Reduction
High Savery Wyoming Carbon 165 High Fair 2003 Irrigation
Lower Sunshine Wyoming Park 162 High Fair 1972 Irrigation
Upper Sunshine Wyoming Park 160 High Fair 1942 Irrigation
Rob Roy Wyoming Albany 150 High Fair 1986 Water Supply
Fontenelle Dam Wyoming Lincoln 139 High Not Available 1964 Fish and Wildlife Pond
Guernsey Dam Wyoming Platte 137 High Not Available 1927 Hydroelectric
Buffalo Bill-Diamond Creek Dike Wyoming Park 136 High Not Available 1905 Fish and Wildlife Pond
Laprele Wyoming Converse 135 High Unsatisfactory 1909 Irrigation
Lake Desmet (North Dam) Wyoming Johnson 120 High Fair 1975 Water Supply
Lake Desmet (A,B,C & Spillway Dikes) Wyoming Johnson 120 High Fair 1975 Water Supply
Lake Desmet (South Dam) Wyoming Johnson 120 High Fair 1975 Water Supply
Grassy Lake Dam Wyoming Teton 118 High Not Available 1939 Irrigation
Hog Park Main Dam Wyoming Carbon 118 High — 1986 Water Supply
Pond 4 (Dam 2) Wyoming Sweetwater 110 Significant — 1992 Irrigation
Tie Hack Wyoming Johnson 110 High Fair 1997 Water Supply
Crystal Lake Wyoming Laramie 108 High Fair 1922 Water Supply
Muddy Guard No. 2 North Dam Wyoming Johnson 102 Significant Fair 1976 Irrigation
Upper Rock Creek Wyoming Fremont 101 Significant Fair 1961 Other
Upper Van Tassell Wyoming Laramie 98 High Poor 1932 Water Supply
Jim Bridger Power Plant Surge Pond Wyoming Sweetwater 97 Significant Fair 1989 Water Supply
22 - 36 Wyoming Johnson 95 Low Fair 2003 Irrigation
Big Goose Park (3rd Enl.) Wyoming Sheridan 95 High Fair 1958 Irrigation
Grayrocks Wyoming Platte 95 High Fair 1980 Other
Glendo Dike 3 Wyoming Platte 94 High Not Available 1959 Flood Risk Reduction
Washakie Wyoming Fremont 93 High Satisfactory 1935 Irrigation
Twin Lakes No. 1 Wyoming Sheridan 91 High — 1998 Water Supply
Granite Springs Wyoming Laramie 90 High Fair 1904 Water Supply
Viva Naughton Wyoming Lincoln 90 High Fair 1967 Water Supply
Lower Morgan Wyoming Campbell 88 Significant — 2001 Irrigation
Units 1 and 2 Ash and Clear Water Wyoming Lincoln 88 Low Fair 1994 Debris Control
Lower Snake Draw (4th Enl.) Wyoming Sweetwater 85 Significant Fair 1998 Tailings
Sulphur Creek Wyoming Uinta 85 High Fair 1964 Irrigation
Big Sandy Dam Wyoming Sweetwater 85 High Not Available 1952 Flood Risk Reduction
Jackson Lake Dam Wyoming Teton 84 High Not Available 1911 Flood Risk Reduction
Bull Lake Dam Wyoming Fremont 81 High Not Available 1938 Flood Risk Reduction
Dull Knife Wyoming Johnson 80 High Fair 1966 Irrigation
Mcintosh No. 1 Wyoming Fremont 80 Low Fair 1979 Tailings
Mcmurry No. 4 Wyoming Natrona 78 High Satisfactory 2014 Fish and Wildlife Pond
Healy Wyoming Johnson 76 High — 1975 Irrigation

Frequently Asked Questions

Hazard potential is based on the consequences of dam failure, not the condition of the dam. High hazard means loss of human life is probable. Significant means economic and environmental losses are expected but no probable loss of life. Low means minimal losses are expected. The classification considers downstream population, infrastructure, and environmental resources.

Condition ratings reflect the physical state of the dam based on periodic inspections. Satisfactory means no deficiencies found. Fair means minor issues exist but no immediate action needed. Poor means safety deficiencies require remedial action. Unsatisfactory means the dam is unsafe and immediate corrective action is required.

Yes. Use the search field above to find dams by name. You can also combine the search with state, hazard, and condition filters to narrow your results. Each dam record links to a detail page with complete information.