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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.

Clear
Name State County Height (ft) Hazard Condition Year Purpose
Scotch Valley Estates Pennsylvania Columbia 14 High Not Rated 1978 Other
Savery Mill Pennsylvania Chester 14 Significant Fair 1960 Recreation
Lake Montrose Pennsylvania Susquehanna 14 High Poor 1919 Water Supply
Neshaminy Falls Pennsylvania Bucks 14 Low Satisfactory 1909 Recreation
Hamilton Street Pennsylvania Lehigh 14 Low Satisfactory 1983 Recreation
Exton Lake Pennsylvania Westmoreland 14 Significant Fair — Recreation
Lake Timberline Pennsylvania Susquehanna 14 Low Satisfactory 1958 Recreation
Buhl Park Pennsylvania Mercer 14 High Satisfactory 1919 Recreation
Pickerel Pond Pennsylvania Pike 14 High Fair 1951 Recreation
Marshwood Pennsylvania Lackawanna 14 High Fair 1927 Water Supply
Maple Lake Pennsylvania Sullivan 14 High Fair 1954 Recreation
Sunrise Lake Pennsylvania Pike 14 Significant Fair 1970 Recreation
Lakewood Development Pennsylvania Beaver 14 Significant Poor 1982 Recreation
Meadow Lake Pennsylvania Monroe 14 Significant Fair 1916 Recreation
Susquehanna Woods Lower Pennsylvania Montgomery 14 High Fair 2005 Flood Risk Reduction
Faulkner Brook (Sgl #299) Pennsylvania Wayne 14 Low Poor — Recreation
Wolf Swamp Run Pennsylvania Monroe 14 Low Poor — Recreation
Galvin Pond Pennsylvania Bradford 14 Significant Fair 1966 Recreation
Rohanna Pennsylvania Greene 14 Significant Fair — Irrigation
Lake Naomi Pennsylvania Monroe 14 High Fair 1895 Recreation
Manada Golf Club Pond Pennsylvania Dauphin 14 Significant Fair — Irrigation
Dunmore No 3 Pennsylvania Lackawanna 14 Low Fair 1845 Water Supply
Little Sugar Creek Pennsylvania Crawford 14 Low Not Rated 1966 Recreation
Sunny Brook Estates # 1 Pennsylvania Montgomery 14 Significant Fair 1999 Flood Risk Reduction
Hershey Mill Pennsylvania Chester 14 Significant Fair 1748 Recreation
Lake In The Clouds Pennsylvania Pike 14 High Satisfactory 1952 Recreation
Upper Southside Sport Pennsylvania Beaver 14 Significant Satisfactory 1979 Recreation
Hidden Valley Pond No 2 Pennsylvania Somerset 14 High Fair 1987 Irrigation
Marshall Lake Pennsylvania Allegheny 14 Low Fair — Recreation
Conashaugh Lake Pennsylvania Pike 14 Significant Fair 1969 Recreation
Hemlock Lake Pennsylvania Pike 14 High Fair 1930 Recreation
House Pond Pennsylvania Wayne 14 High Satisfactory 1925 Recreation
Pleasant Valley Estates Pennsylvania Monroe 14 High Satisfactory 2009 Recreation
Forest Lakes No. 1 Pennsylvania York 14 Significant Satisfactory — Recreation
Patterson Pennsylvania Beaver 14 Low Satisfactory 1825 Hydroelectric
Keuster & Duanio (Pa-416) Pennsylvania Wayne 14 High Fair 1960 Flood Risk Reduction
Seven Fields Regional Sw Det Pennsylvania Butler 14 Significant Not Rated 1999 Flood Risk Reduction
Cambridge Springs Pennsylvania Crawford 14 High Poor — Recreation
Basin 1 Pennsylvania York 13 High Satisfactory 1998 Flood Risk Reduction
Warner Pennsylvania Susquehanna 13 Low Fair 1930 Recreation
Reservoir No 7 Pennsylvania Wayne 13 Significant Fair 1852 Water Supply
Cobbs Lake Pennsylvania Wayne 13 Low Fair 1926 Recreation
Hunter Lake Pennsylvania Monroe 13 Significant Poor 1928 Recreation
Beaver Swamp Pennsylvania Lycoming 13 Low Not Available 1975 Fish and Wildlife Pond
Crossing No 5 Pennsylvania Chester 13 Significant Fair 2005 Flood Risk Reduction
Lily Pond Pennsylvania Pike 13 Low Fair 1898 Recreation
Basin No 2 Pennsylvania Lackawanna 13 Low Fair 1992 Flood Risk Reduction
Swartz Pennsylvania Cambria 13 Significant Not Rated — Recreation
Robert Christman Pennsylvania Monroe 13 High Unsatisfactory — Recreation
Crossing No 3 Pennsylvania Chester 13 Significant Fair — 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.