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Browse Dams

1,492 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 1,492 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
Laurel Run Pennsylvania Lackawanna 44 High Fair 1894 Recreation
Bradford City No 2 Pennsylvania McKean 44 High Satisfactory 1886 Water Supply
F Pennsylvania Luzerne 43 High Fair 1916 Water Supply
Maple Creek Silt Pond B Pennsylvania Washington 43 High Satisfactory 1977 Other
Cloe Lake Pennsylvania Jefferson 43 High Satisfactory 1909 Recreation
Colvin Sedimentation Pond Pennsylvania Greene 43 Significant Satisfactory 1980 Other
Williams Run Pennsylvania Cambria 43 High Fair 1956 Water Supply
Lloydell Pennsylvania Cambria 43 High Fair 1906 Water Supply
Barneston (Pa 432) Pennsylvania Chester 43 High Fair 1983 Flood Risk Reduction
Ethel Springs Pennsylvania Westmoreland 43 High Poor 1900 Water Supply
Big Spring Pennsylvania Westmoreland 43 High Satisfactory 1907 Water Supply
Spring Valley Lake Pennsylvania Allegheny 43 Low Fair 1964 Recreation
Hemlock Lake Pennsylvania Indiana 43 High Satisfactory 1970 Recreation
Martins Creek Ses Ash Basin No 4 Pennsylvania Northampton 43 Significant Fair 1989 Other
Meadow Grounds Pennsylvania Fulton 43 High Satisfactory 1964 Recreation
Upper Owl Creek Pennsylvania Schuylkill 43 High Satisfactory 1921 Water Supply
Pine Run No 1 Pennsylvania Luzerne 43 High Poor 1884 Recreation
Faylor Lake (Pa-636) Pennsylvania Snyder 43 High Fair 1983 Recreation
Anderson Creek Pennsylvania Clearfield 42 High Fair 1903 Water Supply
Ryerson Station Pennsylvania Greene 42 High Unsatisfactory 1960 Recreation
14-North Impoundment Pennsylvania Allegheny 42 High Satisfactory — Other
Dutch Fork Pennsylvania Washington 42 High Satisfactory 1959 Recreation
Lake Meade Pennsylvania Adams 42 High Poor 1967 Recreation
Hilltown (Pa-625) Pennsylvania Bucks 42 High Fair 1980 Flood Risk Reduction
Pike Township Pennsylvania Clearfield 42 Low Not Rated 1975 Water Supply
Pleasant Valley Pennsylvania Carbon 42 Low Satisfactory 1967 Recreation
Breskin No 2 Pennsylvania Westmoreland 42 High Satisfactory 1971 Recreation
Pole Run No 4 Pennsylvania Schuylkill 42 High Satisfactory 1877 Water Supply
Rock Run Pennsylvania Chester 42 High Fair 1917 Water Supply
Mount Airy Pennsylvania Monroe 42 High Poor 1974 Recreation
Village Two At New Hope Pennsylvania Bucks 41 Undetermined Not Rated 1980 Flood Risk Reduction
Fawn Lake Pennsylvania Pike 41 High Fair 1971 Recreation
Humboldt Reservoir Pennsylvania Luzerne 41 Significant Fair 1911 Water Supply
Conneautville (Pa-112) Pennsylvania Crawford 41 High Fair 1984 Flood Risk Reduction
Trout Run Pennsylvania Westmoreland 41 High Fair 1927 Water Supply
Waste House No 3 Pennsylvania Schuylkill 41 High Satisfactory 1902 Water Supply
Doverspike No 1 Pennsylvania Jefferson 41 High Satisfactory 1970 Recreation
Midfield Sedimentation Pond Pennsylvania Allegheny 40 High Satisfactory 1988 Flood Risk Reduction
Saul Run (Pa-458) Pennsylvania Mercer 40 High Satisfactory 1963 Flood Risk Reduction
Silt Pond Pennsylvania Lawrence 40 Significant Not Available — Other
Thorn Run Pennsylvania Butler 40 High Satisfactory 1903 Water Supply
Raven Run No 3 Pennsylvania Schuylkill 40 High Fair 1885 Water Supply
Slurry Pond #2 Pennsylvania Indiana 40 Significant Not Available — Tailings
Scotch Run Pennsylvania Blair 40 Low Not Rated 1916 Water Supply
John P. Murtha Locks and Dam Pennsylvania Westmoreland 40 Significant Not Available 1967 Navigation
Tafton Dike Pennsylvania Pike 40 High Satisfactory 1926 Hydroelectric
Indian Creek Pennsylvania Fayette 40 High Poor 1905 Water Supply
Looney Lake Pennsylvania Mercer 40 Significant Satisfactory 1952 Recreation
Rainbow (Pa-460) Pennsylvania Crawford 40 High Fair 1964 Flood Risk Reduction
Merriman Pennsylvania Butler 40 High Fair 1966 Recreation

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.