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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.

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Name State County Height (ft) Hazard Condition Year Purpose
Bev Pennsylvania Somerset 10 Significant Not Rated 1991 Recreation
Horton Lake Pennsylvania Susquehanna 10 High Fair 1956 Recreation
Ridge Lake Pennsylvania Wayne 10 Significant Poor — Recreation
Easton Anglers Pennsylvania Monroe 10 Low Not Rated 1929 Recreation
Thomas Pennsylvania Monroe 10 Significant Poor 1982 Recreation
Gillespies Pond Pennsylvania Susquehanna 10 Significant Fair — Recreation
Posts Pond Pennsylvania Susquehanna 10 Low Fair 1910 Recreation
Kings Crossing Pennsylvania Northampton 10 Significant Fair 1990 Flood Risk Reduction
Heishmans Mill Pennsylvania Cumberland 10 Low Not Rated 1815 Hydroelectric
Williams Pond Pennsylvania Susquehanna 10 Low Fair 1919 Recreation
Mud Pond Pennsylvania Bradford 10 Low Not Rated 1940 Recreation
Pond View Farm Pennsylvania Chester 10 Significant Poor 1960 Recreation
Pine Grove Pennsylvania Chester 10 Low Not Rated 1919 Recreation
Ballibay Pennsylvania Bradford 10 Significant Unsatisfactory — Recreation
Lake Lenape Pennsylvania Monroe 10 Low Not Rated 1901 Recreation
Alder Marsh Pennsylvania Wayne 10 High Fair 1948 Recreation
Barmore Lake Pennsylvania Mercer 10 Low Not Rated 1903 Recreation
Lingertots Pond Pennsylvania Luzerne 10 Low Satisfactory 1957 Recreation
Splash Pennsylvania Sullivan 10 Low Not Rated 1958 Recreation
Harris Pond Pennsylvania Luzerne 10 High Fair 1922 Recreation
Nick Pond Pennsylvania Susquehanna 10 Significant Satisfactory 1996 Recreation
Swatara Pennsylvania Dauphin 10 Low Not Rated 1935 Water Supply
Hartstown No 15 Pennsylvania Crawford 10 Low Not Rated 1989 Recreation
Youghiogheny Intake Pennsylvania Fayette 10 Low Not Rated — Other
Water Control Structure Pennsylvania Philadelphia 10 Undetermined Not Rated — Other
Rudy Pond Pennsylvania York 10 Significant Satisfactory 2005 Recreation
Lake Moc-A-Tek Pennsylvania Wayne 10 Low Fair — Recreation
Juniata Lake Pennsylvania Clearfield 10 Significant Fair 1934 Recreation
Jacobs Creek Pennsylvania Dauphin 10 Significant Satisfactory 1999 Flood Risk Reduction
Lake Renee Pennsylvania Pike 10 High Fair 1973 Recreation
Spring Lake Pennsylvania Susquehanna 10 High Poor 1919 Recreation
Williams Pennsylvania Erie 10 Significant Not Rated — Recreation
Lake Sheridan Pennsylvania Wyoming 10 High Satisfactory 1872 Recreation
Summit Lake No 2 Pennsylvania Monroe 10 Low Fair 1919 Recreation
Silver Lake Pennsylvania Wayne 10 Low Fair 1923 Recreation
Lake Lloyd Pennsylvania Potter 10 Low Not Rated — Other
Palmer Park Mall Pennsylvania Northampton 10 Significant Fair 1981 Flood Risk Reduction
Adams Brook Pennsylvania Pike 10 Low Fair 1932 Recreation
Hamlin Lake Park Pennsylvania McKean 10 High Fair 1915 Recreation
Mill Pond Pennsylvania Wayne 10 Significant Fair 1917 Hydroelectric
Timber Creek Condo Pennsylvania Montgomery 10 Significant Fair 1985 Flood Risk Reduction
Bowmans Marsh Pennsylvania Luzerne 10 Low Satisfactory — Recreation
Lake Warren Pennsylvania Bucks 10 Low Fair 1935 Recreation
Springwater Lake Pennsylvania Monroe 10 High Satisfactory 2009 Recreation
Collins Pond Pennsylvania Wayne 10 Low Not Rated 1867 Recreation
Paradise Lake No. 1 Pennsylvania Fayette 10 Significant Satisfactory 1973 Recreation
Interlaken Pennsylvania Lackawanna 10 High Satisfactory 1928 Recreation
Camp Cayuga Lake Pennsylvania Wayne 10 Low Fair 1931 Recreation
Beaver Lake Lodge Pennsylvania Pike 10 High Satisfactory 1933 Recreation
Lily Lake Pennsylvania Luzerne 10 Low Satisfactory 1973 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.