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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.

Name State County Height (ft) Hazard Condition Year Purpose
Queen Lane Raw Water Basin Pennsylvania Philadelphia 50 High Fair 1900 Water Supply
Mitchell Sludge Sedimentation Pond Pennsylvania Washington 50 Significant Satisfactory 1982 Other
Cooling Pond A Pennsylvania Armstrong 49 Low Not Rated 1995 Other
Lower Tumbling Run Pennsylvania Schuylkill 49 High Poor 1832 Water Supply
Bridgeport (Pa-655) Pennsylvania Westmoreland 49 High Satisfactory 1992 Flood Risk Reduction
Stephen Foster Pennsylvania Bradford 49 High Fair 1977 Recreation
Breckenridge Detention Pennsylvania Allegheny 49 Significant Satisfactory — Flood Risk Reduction
Eisenhuth Reservoir Pennsylvania Schuylkill 49 High Fair 1875 Water Supply
Wilmore Pennsylvania Cambria 48 High Poor 1908 Water Supply
East Stroudsburg Pennsylvania Monroe 48 High Satisfactory 1936 Water Supply
Washington No 3 Pennsylvania Washington 48 High Satisfactory 1895 Grade Stabilization
Shaver's Creek Pennsylvania Huntingdon 48 High Satisfactory 1961 Recreation
Bradford City No 3 Pennsylvania McKean 47 High Satisfactory 1898 Water Supply
Pocono Lake Pennsylvania Monroe 47 High Satisfactory 1957 Hydroelectric
Foster Joseph Sayers Dam - Howard Levee Pennsylvania Centre 47 High Not Available 1966 Flood Risk Reduction
Blair Gap Pennsylvania Blair 47 High Fair 1907 Water Supply
Saw Mill Pennsylvania Montgomery 47 High Fair 1968 Flood Risk Reduction
Dunmore No 1 Pennsylvania Lackawanna 47 High Fair 1877 Water Supply
Gardner Creek Pennsylvania Luzerne 47 High Fair 1902 Water Supply
Core Creek (Pa-620) Pennsylvania Bucks 47 High Fair 1976 Flood Risk Reduction
Locust Lake Pennsylvania Schuylkill 46 High Fair 1954 Recreation
Spruce Run Reservoir Pennsylvania Union 46 High Fair 1957 Water Supply
Encke Pennsylvania Somerset 46 Low Not Rated 1994 Recreation
Nemacolin Pennsylvania Washington 46 Low Fair 1964 Irrigation
Hamburg Flood Control (Pa-476) Pennsylvania Berks 46 High Fair 1965 Flood Risk Reduction
Robin Run (Pa-612) Pennsylvania Bucks 46 High Fair 1971 Flood Risk Reduction
Pond # 3 Pennsylvania Luzerne 45 Significant Not Available — Tailings
Sediment Pond In Pit Pennsylvania Susquehanna 45 Low Not Available — Tailings
Jack Clutter Pennsylvania Washington 45 High Satisfactory 1983 Water Supply
New Kernsville Pennsylvania Berks 45 High Fair 1949 Recreation
Upper Kittanning Pennsylvania Blair 45 High Fair 1887 Water Supply
Clark Mills (Pa-490) Pennsylvania Mercer 45 High Fair 1971 Flood Risk Reduction
Raccoon Creek Pennsylvania Beaver 45 High Fair 1948 Recreation
Canonsburg Pennsylvania Washington 45 High Satisfactory 1943 Recreation
Dunmore No 7 Reservoir Pennsylvania Lackawanna 45 High Poor 1872 Water Supply
Crescent Lake Pennsylvania Pike 45 High Fair 1959 Recreation
Keystone State Park Pennsylvania Westmoreland 45 Significant Not Rated 1910 Recreation
High Point Lake Pennsylvania Somerset 45 High Satisfactory 1965 Recreation
Wastewater Treatment Pennsylvania Chester 45 Significant Fair 1985 Other
Lake George Pennsylvania Somerset 45 High Poor 1989 Recreation
Allison Reservoir Pennsylvania Fayette 45 High Fair 1917 Recreation
Kahle Lake Pennsylvania Venango 45 Significant Not Rated 1974 Recreation
Warrington (Pa-611) Pennsylvania Bucks 45 High Fair 1976 Flood Risk Reduction
Curtis Pennsylvania Lackawanna 45 High Poor 1887 Water Supply
Laurel Run Pennsylvania Lackawanna 44 High Fair 1894 Recreation
Newtown (Pa-621) Pennsylvania Bucks 44 High Fair 1980 Flood Risk Reduction
Bradford City No 2 Pennsylvania McKean 44 High Satisfactory 1886 Water Supply
Fawn Lake Pennsylvania Schuylkill 44 High Satisfactory 1972 Recreation
Dark Hollow Pennsylvania Mifflin 44 High Fair 1934 Recreation
Dashields Locks and Dam Pennsylvania Allegheny 44 Significant Not Available 1929 Navigation

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.