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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
Lake Ellyn Pennsylvania Wayne 12 High Satisfactory 1914 Recreation
Hulmeville Park Pennsylvania Bucks 12 Low Fair 1800 Recreation
Lakeside Pond Pennsylvania Susquehanna 12 Low Fair 1840 Recreation
Culbertson Pennsylvania Venango 12 Low Not Rated — Other
Madison Heights Pennsylvania Butler 12 Low Not Rated 2005 Recreation
Rinehart Pennsylvania Montgomery 12 Significant Satisfactory 1988 Recreation
Howell Pond Pennsylvania Wayne 12 Low Fair — Other
Sunset Lake Pennsylvania Columbia 12 Low Not Rated — Other
Country Bend Pennsylvania Bucks 12 Significant Fair 1986 Flood Risk Reduction
Bayly Pond Pennsylvania Wayne 12 Low Poor 1961 Recreation
Blue Giant Meadow Pennsylvania Luzerne 12 Significant Satisfactory 1912 Recreation
Golf Ridge Lower Pennsylvania Montgomery 12 High Fair 1996 Recreation
Makefield Glen Detention B Pennsylvania Bucks 12 Significant Poor 1988 Flood Risk Reduction
Deerfield Lake Pennsylvania Wayne 12 High Fair 1971 Recreation
Beaver Run Pennsylvania Pike 12 Low Fair 1956 Recreation
Mink Pond Pennsylvania Pike 12 High Satisfactory 1919 Recreation
No 5 Pennsylvania Northumberland 12 Low Not Rated 1896 Recreation
Larsen Lake Pennsylvania Wayne 12 High Poor 1910 Recreation
Ciccotti Pennsylvania Bradford 12 Significant Fair 1968 Recreation
Mill Creek Pennsylvania Bradford 12 High Fair 1954 Recreation
K-Section Pennsylvania Adams 12 Significant Fair 1970 Recreation
Lake Watawga Pennsylvania Wayne 12 Significant Poor 1907 Recreation
Acre Pond Pennsylvania Susquehanna 12 High Satisfactory 1825 Recreation
Paradise Lake No. 2 Pennsylvania Fayette 12 Significant Poor 1973 Recreation
Monroe Lake Pennsylvania Monroe 12 High Fair 1926 Recreation
Lake Caroline Pennsylvania Bucks 12 Low Fair 1953 Recreation
Little Keen Pond Pennsylvania Wayne 12 Significant Fair 1902 Recreation
Moosic Lakes Pennsylvania Lackawanna 12 Significant Poor — Recreation
Rolling Greens (Bethlehem Twp Det) Pennsylvania Northampton 12 High Satisfactory 1986 Flood Risk Reduction
Lake Jamie Pennsylvania Monroe 12 High Satisfactory 1956 Recreation
Lake Quinn Pennsylvania Wayne 12 High Poor 1946 Recreation
Forest Lake Pennsylvania Susquehanna 12 Significant Satisfactory 1842 Recreation
Harkins Pond Pennsylvania Luzerne 12 High Satisfactory — Recreation
Siegel Marsh Pennsylvania Erie 12 Significant Not Rated 1958 Recreation
Eagle Lake Pennsylvania Lackawanna 12 High Satisfactory 1895 Recreation
Douglas Pond Pennsylvania Wayne 12 Low Fair 1964 Recreation
Somerset Lakes Basin No 2 Pennsylvania Chester 12 Significant Fair 1991 Flood Risk Reduction
Pa-106 Pennsylvania Crawford 12 Low Not Rated 1978 Recreation
Norristown (Swede Street) Pennsylvania Montgomery 12 Low Satisfactory 1800 Recreation
Four Seasons Lake Pennsylvania Susquehanna 12 Significant Poor — Recreation
Locust Lake Pennsylvania Monroe 12 High Satisfactory — Recreation
Werrys Lake Pennsylvania Monroe 12 Low Fair 1929 Recreation
Mountaintop Lake #2 Pennsylvania Monroe 12 High Fair 1993 Recreation
Cumberland No. 2 Sediment Pond. Pennsylvania Greene 12 Significant Satisfactory 2003 Other
West Whiteland Business Park Pennsylvania Chester 12 Significant Poor — Flood Risk Reduction
Lower Birchwood Lake Pennsylvania Pike 12 High Satisfactory 1960 Recreation
Muddy Run East Dike Pennsylvania Lancaster 12 Low Satisfactory 1967 Hydroelectric
Moon Lake Pennsylvania Schuylkill 12 High Poor — Recreation
Crystal Lake Dam 2 Pennsylvania Luzerne 12 High Satisfactory 1888 Water Supply
Deer Lake Pennsylvania Schuylkill 12 High Poor 1925 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.