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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
Fords Lake Pennsylvania Lackawanna 17 High Fair 1995 Recreation
Timber Lake Pennsylvania Washington 17 Significant Fair 1990 Flood Risk Reduction
Bel-Aire Lake Pennsylvania Susquehanna 17 High Poor 1950 Recreation
Meadow Run Pennsylvania Luzerne 17 High Satisfactory 1909 Recreation
Philipsburg No 3 (Upper) Pennsylvania Centre 17 High Fair 1921 Water Supply
Camp Trees Pennsylvania Butler 17 Significant Not Rated — Recreation
Hidden Lake Pennsylvania Wayne 17 High Satisfactory 1966 Recreation
Cassidy Lake Pennsylvania Susquehanna 17 Low Not Available 1970 Recreation
Walden Woods Pennsylvania Allegheny 17 High Satisfactory 2000 Flood Risk Reduction
Duck Pond Pennsylvania Lackawanna 17 High Fair 1937 Recreation
Bear Creek Lake Pennsylvania Luzerne 17 High Satisfactory 1915 Recreation
Saxe Pond Pennsylvania Bradford 17 High Fair 1929 Recreation
Glass Pond No 2 Pennsylvania Wayne 17 Significant Fair 1914 Recreation
Slade Pennsylvania Allegheny 17 Significant Satisfactory — Recreation
Great Stream Commons Upper Pennsylvania Union 17 Significant Not Rated 2001 Flood Risk Reduction
Little Flipper Lake Pennsylvania Clearfield 17 Significant Not Rated 1986 Recreation
Lake Ridge Estates Detention Pennsylvania Westmoreland 17 Significant Not Rated 2002 Flood Risk Reduction
Horsham Towne Upper Pond Pennsylvania Montgomery 17 Significant Fair — Flood Risk Reduction
Laroche College Detention Basin #2 Pennsylvania Allegheny 17 Significant Satisfactory 1992 Flood Risk Reduction
Lewis Pond Pennsylvania Tioga 16 Low Not Available 1971 Recreation
Collum Pond Pennsylvania Tioga 16 High Not Available 1965 Recreation
Whipple Pennsylvania Huntingdon 16 Low Not Rated 1920 Recreation
Clark Pennsylvania McKean 16 Low Not Rated 1966 Recreation
Hirsch Pennsylvania Pike 16 Low Satisfactory 1958 Recreation
Lake Constance Pennsylvania Wayne 16 Significant Fair 1918 Recreation
Emmons Harvey Pond Pennsylvania Wyoming 16 Low Not Available 1964 Fish and Wildlife Pond
Lake Verex Pennsylvania Susquehanna 16 Low Satisfactory 1969 Recreation
Crystal Lake Pennsylvania Somerset 16 Low Not Rated 1912 Water Supply
Cobey Pond Pennsylvania Pike 16 Low Fair 1962 Recreation
Brechbill Dam Pennsylvania Tioga 16 Low Not Available 1974 Recreation
Mcdonaldton Pennsylvania Somerset 16 Significant Fair 1911 Recreation
Welkinweir Pennsylvania Chester 16 High Fair 1937 Recreation
Bristol Swamp Pennsylvania Potter 16 Low Not Available 1976 Fish and Wildlife Pond
Spencer Mill Pennsylvania Susquehanna 16 Significant Poor 1919 Recreation
Lake Louise Pennsylvania Luzerne 16 High Fair 1927 Recreation
Nabbys Lake Pennsylvania Wayne 16 Low Not Rated — Recreation
Longstown Village Pennsylvania York 16 Significant Satisfactory 1998 Flood Risk Reduction
Ebensburg Storage Pennsylvania Cambria 16 High Poor 1923 Water Supply
Lake Adventure Pennsylvania Pike 16 High Satisfactory 1978 Recreation
Yingst Pennsylvania Dauphin 16 Significant Satisfactory 1999 Recreation
Lake Letterkenny Dam Pennsylvania Franklin 16 Undetermined Not Rated 1945 Recreation
Hathaway Pond Pennsylvania Susquehanna 16 Significant Fair 1919 Recreation
Kellow Lake Pennsylvania Wayne 16 High Fair 1900 Recreation
Reynoldsville Storage #4 Pennsylvania Jefferson 16 High Fair 1961 Water Supply
Promised Land Pennsylvania Pike 16 High Fair 1919 Recreation
Wigwam Lake Pennsylvania Monroe 16 High Fair 1928 Recreation
Sherwood Oaks Lake Pennsylvania Butler 16 High Fair 1981 Recreation
Lake Kimberly Pennsylvania Perry 16 Low Not Rated 1970 Recreation
Briggs Street Detention Pennsylvania Lackawanna 16 High Poor — Flood Risk Reduction
Glenburn Pond Pennsylvania Lackawanna 16 High Unsatisfactory 1854 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.