Browse Dams

831 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 831 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
Upper East Highland Lake Dam New Jersey Sussex 15 Significant Satisfactory 1957 Recreation
Colesville Reservoir Dam New Jersey Sussex 15 Significant Poor - Water Supply
Osborn Mills Dam New Jersey Somerset 15 Significant Satisfactory - Water Supply
Silver Lake Dam New Jersey Morris 15 Low - - Recreation
Wallkill Lake Dam New Jersey Sussex 15 Low Fair 1930 Recreation
Manalapan Lake Dam New Jersey Middlesex 15 High Satisfactory - Recreation
Hipps Folley Dam New Jersey Burlington 15 Low Not Available 1967 Recreation
Holstein Lake Dam New Jersey Morris 15 Low - 1875 Recreation
Pinecliff Lake Dam New Jersey Passaic 15 High Fair 1927 Recreation
Mcafee Glenwood Road Dam No. 2 New Jersey Sussex 15 Significant Satisfactory 2000 Flood Risk Reduction
Grover'S Mill Dam New Jersey Mercer 15 Significant Fair 1931 Recreation
Jefferson Lake Dam New Jersey Sussex 15 Low Poor - Recreation
Long Pine Pond Dam New Jersey Sussex 15 Low Not Available 1995 Recreation
Swannanoa Lake #1 (South) Dam New Jersey Morris 15 High Satisfactory 1914 Recreation
Smoyer Park Dam New Jersey Mercer 15 Significant Satisfactory -
Quick Pond Dam New Jersey Sussex 15 Low - - Recreation
Lake Aeroflex Dam New Jersey Sussex 15 Low Poor - Recreation
Green Pond Reservoir Dam New Jersey Morris 15 Low - - Recreation
Mt. Hope Pond Dam New Jersey Morris 15 Significant Poor 1930 Recreation
East Cove Dam New Jersey Sussex 15 High Fair - Recreation
Harrisonville Dam New Jersey Gloucester 15 Significant Poor - Recreation
Rock Lodge Pond Dam New Jersey Sussex 15 Significant Satisfactory 1907
Mountain Lake Dam New Jersey Morris 15 High Satisfactory - Recreation
Post Brook Dam New Jersey Passaic 15 High Satisfactory 1923 Recreation
Picatinny Lake New Jersey Morris 15 High Fair 1904 Water Supply
New Jersey No Name # 85 Dam New Jersey Burlington 15 Low - 1950 Recreation
Gale Dam New Jersey Burlington 15 Low Poor 1970 Recreation
Peddie Lake Dam New Jersey Mercer 15 High Satisfactory 1923 Recreation
Lake Panorama Dike New Jersey Sussex 15 High Poor 1987 Recreation
Sallys Pond Dam New Jersey Passaic 15 High Fair - Recreation
Lake Gerard Dike B New Jersey Sussex 15 High Satisfactory - Recreation
Mary Elmer Lake Dam New Jersey Cumberland 15 Significant Satisfactory 1924 Recreation
Mill Dam New Jersey Burlington 15 Low Poor 1908 Recreation
Jackson Pond Dam New Jersey Union 15 Significant Satisfactory - Other
Cooper River Parkway (Kaighn Ave) Dam New Jersey Camden 15 Significant Poor 1940 Flood Risk Reduction
Ewans Mill Dam New Jersey Gloucester 15 Significant Poor - Recreation
Watson'S Lake Dam New Jersey Camden 15 Significant Poor - Recreation
Shaws Mill Pond Dam New Jersey Cumberland 15 Significant Fair - Recreation
Killdeer Lake Dam New Jersey Burlington 15 Significant Poor - Recreation
Lake Lackawanna Dam New Jersey Sussex 15 Significant Fair 1910 Recreation
Devoe Lake Dam New Jersey Middlesex 15 High Satisfactory 1935 Recreation
New Camp Site Dam New Jersey Camden 15 Low Fair 1946 Recreation
Red Valley Dam New Jersey Monmouth 15 Significant Poor 1927 Recreation
Harrison Mountain Lake Dam New Jersey Passaic 15 Low - 1930 Recreation
Brown Dam New Jersey Salem 15 Low Fair 1934 Water Supply
Lower Mount Glen Lake Dam New Jersey Passaic 15 High Fair 1927 Recreation
Packanack Lake Dam New Jersey Passaic 15 High Poor 1921 Recreation
Arrowhead Lake Pond Dam New Jersey Cumberland 15 Significant Poor 1972 Recreation
Boonton Reservoir Dam New Jersey Morris 15 Significant Satisfactory 1900 Water Supply
Preakness Hills C.C. Dam No. 1 New Jersey Passaic 15 High Satisfactory - 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.