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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
Schneider 2 Pennsylvania Butler 32 Low Not Available 1980 Fish and Wildlife Pond
Pennsylvania Lancaster 31 Low Not Available 1968 Recreation
Pa-445 Pennsylvania Wayne 31 High Poor 1961 Flood Risk Reduction
Minersville No 3 Pennsylvania Schuylkill 31 High Satisfactory 1856 Water Supply
Hallowood Acres Pennsylvania Monroe 31 High Fair 1970 Recreation
Conemaugh Equalization Pond Pennsylvania Indiana 31 Low Fair 1987 Other
Lake Stonycreek Pennsylvania Somerset 31 High Satisfactory 1960 Recreation
R G Struble Lake (Pa-431) Pennsylvania Chester 31 High Satisfactory 1971 Flood Risk Reduction
Lake Swiftwater Pennsylvania Monroe 31 High Poor 1930 Recreation
Twin Lakes No 1 Pennsylvania Westmoreland 31 High Satisfactory 1908 Recreation
Moose Creek Reservoir Pennsylvania Clearfield 31 High Poor 1910 Water Supply
Allegheny Storage Pennsylvania Blair 31 High Fair 1905 Water Supply
Pine Run (Pa-616) Pennsylvania Bucks 31 High Fair 1974 Flood Risk Reduction
Lakemont Farms No 1 Pennsylvania Allegheny 30 Significant Satisfactory — Recreation
Lower Lake Pennsylvania Monroe 30 Low Fair 1923 Recreation
Easton Pennsylvania Northampton 30 Low Satisfactory 1943 Recreation
Beaver Lake Pennsylvania Wayne 30 High Poor 1970 Recreation
Upper Castanea Reservoir Pennsylvania Clinton 30 High Unsatisfactory 1869 Water Supply
Edwards Pennsylvania Indiana 30 Low Not Rated 1917 Recreation
Kelly Farm Pennsylvania Butler 30 Significant Unsatisfactory — Other
Butlers Lake Pennsylvania Allegheny 30 High Satisfactory 1941 Recreation
Altemus Pennsylvania Indiana 30 Significant Not Rated 1987 Irrigation
Summit Lake Reservoir Pennsylvania Lackawanna 30 High Fair 1875 Water Supply
Lake Macleod Pennsylvania Allegheny 30 Significant Fair — Recreation
Cold Springs Park Pennsylvania Chester 30 Low Poor — Recreation
Wangaum Falls Pennsylvania Wayne 30 High Poor 1925 Recreation
Sludge Bed No 4 Pennsylvania Butler 30 High Fair 1984 Other
Belmont Raw Water Basin Pennsylvania Philadelphia 30 High Fair 1901 Water Supply
Golden Pond Pennsylvania Huntingdon 30 Low Not Available 1968 Recreation
Francis E. Walter Dam - Saddle Dike Pennsylvania Luzerne 30 High Not Available 1961 Flood Risk Reduction
Neely Pennsylvania Greene 30 Low Fair — Recreation
Bernhart Pennsylvania Berks 30 High Unsatisfactory 1865 Recreation
Blue Marsh Dam - Bernville Levee Pennsylvania Berks 30 High Not Available 1977 Flood Risk Reduction
Lofty Reservoir Pennsylvania Schuylkill 30 Significant Satisfactory 1897 Water Supply
Lovingood Pennsylvania Greene 30 Low Satisfactory — Recreation
Stoneboro (Pa-474) Pennsylvania Mercer 30 High Fair 1966 Flood Risk Reduction
Lake Sophia Pennsylvania Susquehanna 30 High Fair 1957 Recreation
Lake Marge Pennsylvania Susquehanna 30 High Fair — Recreation
Hort Farm Pond- Psu Pennsylvania Centre 30 Low Not Available 1966 Irrigation
Wadham Creek Pennsylvania Luzerne 30 High Satisfactory 1959 Debris Control
Lake Gloria Pennsylvania Somerset 29 High Not Rated 1958 Recreation
Amerikohl Management Pennsylvania Butler 29 Low Not Rated 1983 Other
Colonial No 3 Pennsylvania Fayette 29 Low Not Rated 1907 Recreation
University Park Airport Pond 4a Pennsylvania Centre 29 Significant Fair 1998 Flood Risk Reduction
Broomall Lake Pennsylvania Delaware 29 Low Fair 1883 Recreation
Twin Lakes Pennsylvania Elk 29 Significant Not Rated 1936 Recreation
Brinkerton Pennsylvania Westmoreland 29 Low Not Rated 1903 Recreation
Dutch Country Egg Farm Pennsylvania Lebanon 29 Low Not Rated — Irrigation
Beech Mountain Lake Pennsylvania Luzerne 29 High Poor 1966 Recreation
Maggio Estate No 2 Pennsylvania Lycoming 29 High Poor 1953 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.