Browse Dams

830 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 830 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
New Jersey No Name # 40 Dam New Jersey Passaic 15 High Poor — Recreation
Packanack Lake Dam New Jersey Passaic 15 High Fair 1921 Recreation
Wallkill Lake Dam New Jersey Sussex 15 Low Fair 1930 Recreation
Osborn Mills Dam New Jersey Somerset 15 Significant Satisfactory — Water Supply
Fayson Lakes (West) Dam New Jersey Morris 15 Significant Satisfactory 1922 Recreation
Red Valley Dam New Jersey Monmouth 15 Significant Poor 1927 Recreation
Brown Dam New Jersey Salem 15 Low Satisfactory 1934 Water Supply
Pinecliff Lake Dam New Jersey Passaic 15 High Fair 1927 Recreation
Devoe Lake Dam New Jersey Middlesex 15 High Satisfactory 1935 Recreation
Lake Aeroflex Dam New Jersey Sussex 15 Low Poor — Recreation
Peddie Lake Dam New Jersey Mercer 15 High Satisfactory 1923 Recreation
Ewans Mill Dam New Jersey Gloucester 15 Significant Poor — Recreation
Grover'S Mill Dam New Jersey Mercer 15 Significant Fair 1931 Recreation
Mcafee Glenwood Road Dam No. 2 New Jersey Sussex 15 Significant Satisfactory 2000 Flood Risk Reduction
Post Brook Dam New Jersey Passaic 15 High Satisfactory 1923 Recreation
Lake Winona Dam New Jersey Morris 15 High Poor 1950 Recreation
Upper East Highland Lake Dam New Jersey Sussex 15 Significant Satisfactory 1957 Recreation
Green Pond Reservoir Dam New Jersey Morris 15 Low — — Recreation
Rock Lodge Pond Dam New Jersey Sussex 15 Significant Satisfactory 1907
Sallys Pond Dam New Jersey Passaic 15 High Fair — Recreation
Bridgepoint Dam New Jersey Somerset 15 Significant Satisfactory 1988 Flood Risk Reduction
Lake Lackawanna Dam New Jersey Sussex 15 Significant Fair 1910 Recreation
Lake Marcia Dam New Jersey Sussex 15 Low — — Recreation
Manalapan Lake Dam New Jersey Middlesex 15 High Satisfactory — Recreation
Swannanoa Lake #1 (South) Dam New Jersey Morris 15 High Satisfactory 1914 Recreation
Kennedy Pond Dam New Jersey Ocean 15 Low — — Recreation
White Meadow Lake Dam New Jersey Morris 15 High Satisfactory — Recreation
Jefferson Lake Dam New Jersey Sussex 15 Low Poor — Recreation
East Highland Lake Dam New Jersey Sussex 15 Significant Satisfactory 1947 Recreation
Stony Brook #2 (Willow Lake) Dam New Jersey Mercer 15 Low Satisfactory 1959 Recreation
Silver Lake Dam New Jersey Morris 15 Low — — Recreation
Hemlock Pond Dam New Jersey Sussex 15 Low — — Recreation
Colesville Reservoir Dam New Jersey Sussex 15 Significant Poor — Water Supply
Sawmill Pond Dam New Jersey Sussex 15 Low Poor — Recreation
Gale Dam New Jersey Burlington 15 Low Poor 1970 Recreation
Mountain Lake Dam New Jersey Morris 15 High Satisfactory — Recreation
Shaws Mill Pond Dam New Jersey Cumberland 15 Significant Fair — Recreation
Long Pine Pond Dam New Jersey Sussex 15 Low Not Available 1995 Recreation
Lower Mount Glen Lake Dam New Jersey Passaic 15 High Fair 1927 Recreation
Hipps Folley Dam New Jersey Burlington 15 Low Not Available 1967 Recreation
Harrison Mountain Lake Dam New Jersey Passaic 15 Low — 1930 Recreation
Picatinny Lake New Jersey Morris 15 High Fair 1904 Water Supply
Killdeer Lake Dam New Jersey Burlington 15 Significant Poor — Recreation
Jackson Pond Dam New Jersey Union 15 Significant Satisfactory — Other
Mill Dam New Jersey Burlington 15 Low Poor 1908 Recreation
Harrisonville Dam New Jersey Gloucester 15 Significant Poor — Recreation
New Jersey No Name # 85 Dam New Jersey Burlington 15 Low — 1950 Recreation
New Camp Site Dam New Jersey Camden 15 Low Fair 1946 Recreation
Old Mill Pond Dam New Jersey Monmouth 15 Significant Satisfactory 1948 Recreation
Holstein Lake Dam New Jersey Morris 15 Low — 1875 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.