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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
Deer Lake Pennsylvania Fayette 15 High Fair 1906 Recreation
Errickson Fish Pond Pennsylvania Lehigh 15 High Fair 1982 Recreation
Egelman Reservoir Pennsylvania Berks 15 High Poor 1901 Water Supply
Little Blue Saddle Pennsylvania Beaver 15 Significant Satisfactory 1977 Other
Brinton Lake Pennsylvania Delaware 15 High Poor 1900 Recreation
Upper Silver Lake Pennsylvania Bucks 15 Low Fair 1919 Recreation
Herr Foods Storage Lagoon Pennsylvania Chester 15 High Satisfactory 1996 Other
Sadsbury Twp Detention Pond 1 Pennsylvania Lancaster 15 Low Not Rated 1982 Flood Risk Reduction
Lake Di Cio Pennsylvania Washington 15 Significant Satisfactory 1953 Recreation
Renaissance Regional Basin Pennsylvania Montgomery 15 Significant Satisfactory — Flood Risk Reduction
Kinsley Detention Basin Pennsylvania York 15 Significant Satisfactory 1998 Flood Risk Reduction
Sugar Creek Pennsylvania Bradford 15 High Satisfactory 1956 Grade Stabilization
Illicks Mill Pennsylvania Northampton 15 Low Fair 1850 Recreation
Pond Pennsylvania Lycoming 15 Low Not Rated — Recreation
Ridilla Upper Pond A Pennsylvania Westmoreland 15 Significant Fair — Recreation
Pa-102 Pennsylvania Bradford 15 Low Not Rated 1974 Recreation
Ridley Park Lake Pennsylvania Delaware 15 High Satisfactory 1998 Recreation
Sedimentation Pond "L-1" Pennsylvania Jefferson 15 Low Not Rated 1992 Other
Lewis Lake Pennsylvania Susquehanna 15 High Satisfactory 1835 Recreation
Forest Lakes No. 2 Pennsylvania York 15 Significant Satisfactory — Recreation
Beaver Lake Pennsylvania Wayne 15 Significant Fair 1975 Recreation
Mosquito Creek Pennsylvania Lycoming 15 High Fair 1890 Water Supply
Malvern Preparatory Lower Pennsylvania Chester 15 Significant Satisfactory 1923 Recreation
Shirfs Run Pennsylvania Cambria 15 Significant Not Rated 1925 Water Supply
Lake Hamilton Pennsylvania Wayne 15 High Poor 1954 Recreation
Zelina Pennsylvania Erie 15 Significant Not Rated 1974 Recreation
Nevin Creek (Pa-451) Pennsylvania Wayne 15 High Fair 1972 Flood Risk Reduction
Lower Hemlock Lake Pennsylvania Pike 15 High Fair 1947 Recreation
Steel Pennsylvania Washington 15 Low Satisfactory 1953 Grade Stabilization
Treesdale Impoundment #1 Pennsylvania Butler 15 High Fair — Recreation
Resting Waters Gsc Pennsylvania McKean 15 Low Not Available 1977 Recreation
Sandspring Lake Pennsylvania Pike 15 Low Fair — Recreation
Anthony J. Cimini Pennsylvania Lycoming 15 Low Fair 1984 Recreation
Erie Pool #7 Dam Pennsylvania Crawford 15 Low Fair 1967 Fish and Wildlife Pond
Palomino Farms Retention Basin Pennsylvania Bucks 15 High Fair 1977 Flood Risk Reduction
Village At Pine Pennsylvania Allegheny 15 Significant Satisfactory 1979 Flood Risk Reduction
Clarion U.-Venango Campus West End Pennsylvania Venango 15 High Satisfactory — Recreation
Raystown Dam - Hesston Dike Pennsylvania Huntingdon 15 High Not Available 1973 Flood Risk Reduction
Westtown Pennsylvania Chester 14 Significant Fair 1912 Recreation
Lakewood Pennsylvania Schuylkill 14 Low Poor 1915 Recreation
Vanderpool Pennsylvania Bradford 14 Low Not Rated 1979 Other
Crescent Lake Pennsylvania Monroe 14 Low Not Rated 1957 Recreation
Beaver Pond Pennsylvania Pike 14 High Fair 1913 Recreation
Brooks Pennsylvania Susquehanna 14 Low Fair — Recreation
Lake Steuben Pennsylvania Allegheny 14 High Fair — Recreation
Laurelwood Pennsylvania Butler 14 Significant Not Rated 1993 Flood Risk Reduction
Duffys Run Pennsylvania Luzerne 14 High Fair 1966 Debris Control
Wildwood Lake Pennsylvania Dauphin 14 Low Not Rated 1908 Flood Risk Reduction
Wayne Glen Pennsylvania Chester 14 High Not Rated — Flood Risk Reduction
Lake Strause Pennsylvania Lebanon 14 Significant Poor 1921 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.