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
Lakeland Country Estates Green Lake Pennsylvania Butler 25 High Fair — Recreation
Schmunk Pennsylvania Fayette 25 Low Not Rated — Recreation
Little Sugar Run Pennsylvania Westmoreland 25 Significant Not Rated — Water Supply
Morris Run No 3 Pennsylvania Tioga 25 High Poor 1920 Water Supply
Emsworth Locks and Dams Pennsylvania Allegheny 25 Significant Not Available 1938 Navigation
Parker Pennsylvania Clearfield 25 High Fair 1935 Recreation
Lake Trexler Pennsylvania Monroe 25 Low Fair 1962 Recreation
Holly Pennsylvania Susquehanna 25 Low Fair 1988 Recreation
Raw Water Pond Pennsylvania Washington 25 Low Fair 1968 Grade Stabilization
Ebenezer Pennsylvania Lebanon 25 Significant Satisfactory 1820 Recreation
Weaver Lake Pennsylvania Westmoreland 25 High Fair 1961 Recreation
Emerald No. 1 Sed Pond 11 Pennsylvania Greene 25 High Satisfactory — Other
Valley-Hi Eagle Lake Pennsylvania Fulton 25 High Satisfactory 1964 Recreation
Miller Pond Pennsylvania Wayne 25 High Fair 1867 Recreation
Boldy Pennsylvania Butler 25 Low Not Available 1967 Fish and Wildlife Pond
Trough Creek Reservoir Pennsylvania Bedford 25 Low Not Rated — Water Supply
Lake Bonin Pennsylvania Bradford 25 High Satisfactory 1972 Recreation
Hull Plan Lake Pennsylvania Butler 25 High Poor — Recreation
Lake Heron Pennsylvania Perry 25 High Poor 1970 Recreation
Deskus (Pa-452) Pennsylvania Wayne 25 High Fair 1963 Flood Risk Reduction
Cumberland No 1 Sed Pond Pennsylvania Greene 25 Significant Satisfactory 1985 Other
Koenigs Creek (Pa-425) Pennsylvania Schuylkill 25 High Satisfactory 1962 Flood Risk Reduction
Laurel Wood Pennsylvania Westmoreland 25 Low Fair — Recreation
Hatfield Ferry Sedimentation Pond Pennsylvania Greene 25 Significant Satisfactory — Other
Kapp Pennsylvania Susquehanna 25 Low Satisfactory 1990 Recreation
Crum Creek Pennsylvania Delaware 25 High Fair 1920 Water Supply
Mountainview Orchards Pond Pennsylvania Adams 25 Undetermined Not Available 1967 Irrigation
Pinetree Lake Pennsylvania Monroe 25 High Fair 1972 Recreation
Sedimentation Pond No. 8a Pennsylvania Washington 25 Low Not Available — Other
Timber Lake B Pennsylvania Washington 25 Low Fair 1956 Recreation
Laurel Lake Pennsylvania Cumberland 25 High Fair 1968 Recreation
Wittmer Road Detention Pennsylvania Allegheny 25 High Satisfactory 1990 Flood Risk Reduction
Hockenberry Run Pennsylvania Clearfield 25 Low Not Rated 1980 Recreation
Snyder Lake Pennsylvania Susquehanna 25 Significant Not Available 1971 Recreation
G Pennsylvania Luzerne 25 Significant Fair 1916 Water Supply
Blue Marsh Dam - Dikes A and B Pennsylvania Berks 25 High Not Available 1977 Flood Risk Reduction
Paradise Lake No 3 Pennsylvania Fayette 25 Significant Poor 1914 Recreation
Stoevers Pennsylvania Lebanon 25 High Fair 1820 Recreation
Elroy Face Pennsylvania Indiana 25 High Fair 1954 Recreation
Lake Florence Pennsylvania Wayne 24 Significant Fair 1948 Recreation
Westinghouse Electric Pennsylvania Westmoreland 24 Low Not Rated — Water Supply
Saddle Lake Pennsylvania Wyoming 24 High Satisfactory 1965 Recreation
Northmont Farms Basin #1 Pennsylvania Allegheny 24 High Satisfactory 1986 Flood Risk Reduction
Lakeshore Pennsylvania Erie 24 Significant Poor 1932 Recreation
Bigan Pennsylvania Somerset 24 High Fair 1957 Recreation
Fawn Lake Pennsylvania Pike 24 High Poor 1973 Recreation
Pennsylvania Huntingdon 24 Low Not Available 1968 Recreation
Bakerton Pennsylvania Cambria 24 Significant Not Rated 1921 Water Supply
University Park Airport Pond 1a Pennsylvania Centre 24 High Poor 1995 Flood Risk Reduction
Lake Sinca Pennsylvania Monroe 24 High Fair 1969 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.