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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
H A Stewart Pennsylvania Westmoreland 86 High Fair 1920 Water Supply
Two Mile Run Pennsylvania Venango 85 High Fair 1971 Flood Risk Reduction
Lake Pahagaco Pennsylvania York 85 High Fair 1956 Recreation
Lake Gordon Pennsylvania Bedford 84 High Fair 1913 Water Supply
Taxiway "E" Detention Basin Pennsylvania Allegheny 84 Significant Satisfactory 1996 Flood Risk Reduction
Hinckston Pennsylvania Cambria 84 High Poor 1905 Water Supply
Laurel Run Reservoir Pennsylvania Elk 84 High Poor 1970 Water Supply
Maple Creek #3 Slurry Pond #2 Pennsylvania Washington 83 High Satisfactory — Other
Bear Gap No 2 Pennsylvania Columbia 83 High Fair 1923 Water Supply
York Indian Rock Dam Pennsylvania York 83 High Not Available 1942 Flood Risk Reduction
Cross Creek (Pa-661) Pennsylvania Washington 82 High Satisfactory 1979 Flood Risk Reduction
Lake Rene Pennsylvania Clearfield 82 High Fair 1955 Recreation
Ashland Reservoir Pennsylvania Schuylkill 80 High Poor 1926 Water Supply
Mill Service No 6 Pennsylvania Westmoreland 80 High Satisfactory 1986 Other
Lehigh Coal & Navigation CO - #14 Plant Pennsylvania Schuylkill 80 Significant Not Available — Tailings
Labelle Slurry Pond No 2 Pennsylvania Fayette 80 Significant Not Rated — Other
Pa-485 Pennsylvania Washington 78 High Satisfactory 1977 Flood Risk Reduction
Stillwater Dam Pennsylvania Susquehanna 77 High Not Available 1960 Flood Risk Reduction
Enlow Fork (Pa-648) Pennsylvania Washington 76 High Satisfactory 1987 Flood Risk Reduction
Hamilton Lake (Pa-602) Pennsylvania Tioga 76 High Fair 1967 Flood Risk Reduction
Taylor Pond (Pa-446) Pennsylvania Pike 76 High Fair 1963 Flood Risk Reduction
Ft Charles Young Pennsylvania Venango 75 Low Not Rated — Recreation
Safe Harbor Pennsylvania Lancaster 75 Significant Satisfactory 1930 Hydroelectric
Pine Run Pennsylvania Schuylkill 75 High Satisfactory 1933 Water Supply
Mill Service No 5 Pennsylvania Westmoreland 75 Low Not Rated 1976 Other
Springton (Geist) Pennsylvania Delaware 75 High Fair 1931 Water Supply
Lawrence Baker Sheppard Pennsylvania York 75 High Satisfactory 1965 Water Supply
Gravel Lick Pennsylvania Clearfield 75 High Fair 1974 Recreation
Mill Creek Pennsylvania Luzerne 74 High Fair 1898 Water Supply
Pa-483 Pennsylvania Washington 74 High Satisfactory 1973 Flood Risk Reduction
Wolf Creek Reservoir Pennsylvania Schuylkill 73 High Fair 1909 Water Supply
Frank E Heller Pennsylvania Lycoming 73 High Poor 1975 Water Supply
Montgomery Pennsylvania Clearfield 71 High Poor 1960 Water Supply
Indian Lake Pennsylvania Somerset 71 High Satisfactory 1964 Recreation
Pond No 1 Pennsylvania Chester 71 Low Fair 1970 Tailings
Antietam Pennsylvania Adams 70 High Fair 1953 Water Supply
Briar Creek (Pa 498) Pennsylvania Columbia 70 High Fair 1987 Flood Risk Reduction
Bear Gap No 6 Pennsylvania Columbia 70 High Satisfactory 1915 Water Supply
Lackawanna Pennsylvania Lackawanna 69 High Fair 1971 Recreation
Shenango Dam Pennsylvania Mercer 68 High Not Available 1965 Flood Risk Reduction
Bradford City No 5 Pennsylvania McKean 68 High Poor 1957 Water Supply
Wilsonville Pennsylvania Pike 68 High Satisfactory 1926 Hydroelectric
Kauffman Reservoir Pennsylvania Schuylkill 68 High Satisfactory 1896 Water Supply
Bailey No 5 West Saddle Pennsylvania Greene 68 High Satisfactory — Other
Harmon Creek (Pa-484) Pennsylvania Washington 67 High Satisfactory 1971 Flood Risk Reduction
Brownell Reservoir Pennsylvania Lackawanna 67 High Fair 1908 Water Supply
Bailey Mine Area No. 3 Saddle A Pennsylvania Greene 67 High Satisfactory 2014 Other
Tipton Pennsylvania Blair 66 High Fair 1924 Water Supply
Heritage Reservation Pennsylvania Fayette 66 High Satisfactory 1979 Recreation
Pa-480 Pennsylvania Washington 66 High Satisfactory 1979 Flood Risk Reduction

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.