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Browse Dams

425 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 425 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
Allen Pond (Nottinghill Drive) Maryland Prince George's 16 Low Fair 1972 Recreation
Talbot Country Club Pond (Country Club Drive) Maryland Talbot 16 Low — 1963 Irrigation
Spring Ridge Swm Pond No. D1 Maryland Frederick 16 Low Not Rated 1994 Flood Risk Reduction
Dry Run Detention Dam and Culvert Maryland Allegany 16 High Poor 1949 Flood Risk Reduction
Banneker Regional Pond Maryland Baltimore 15 Significant Not Rated 2006 Flood Risk Reduction
Montclair Manor Levee (Asset 14616) Maryland Montgomery 15 Significant Fair 2004 Flood Risk Reduction
Perryville Water Supply Maryland Cecil 15 Significant Poor 1900 Water Supply
Lake Jennifer Maryland Frederick 15 Low Fair 1963 Recreation
Easton Primary Sewage Lagoon Maryland Talbot 15 Low — 1962 Other
New Mark Commons Community Lake Maryland Montgomery 15 Significant Poor 1966 Recreation
Summit Creek - Mount Auburn Dr Maryland Prince George's 15 High Poor 2000 Flood Risk Reduction
Velvet Hills South Swm Dam Maryland Baltimore 15 Significant Fair 1987 Flood Risk Reduction
Hexton Farms Maryland Cecil 15 Low Not Rated 1966 Recreation
Fullerton Reservoir Tanks Maryland Baltimore 15 High Satisfactory 2020 Water Supply
Summerfield Swm Pond No. 2 Maryland Prince George's 15 High Poor — Flood Risk Reduction
Roland Run Levee Maryland Baltimore 15 High Fair 1982 Flood Risk Reduction
Summit Lake Church Camp Dam Maryland Frederick 15 Low Not Rated 1930 Recreation
Cortland Manor Swm Dam Maryland Washington 15 Low Not Rated 2006 Flood Risk Reduction
Bohemia Mill (Old Telegraph Road) Maryland Cecil 15 Low Not Rated 1913 Recreation
Crofton Farms Regional Swm Pond Maryland Anne Arundel 15 Low Satisfactory 1998 Flood Risk Reduction
Annapolis Reservoir Maryland Anne Arundel 15 Significant Fair 1920 Recreation
Riva Trace Community Pond Maryland Anne Arundel 15 Significant Fair 1985 Recreation
Shores of Calvert Lower Dam Maryland Calvert 15 Low Fair 1972 Recreation
Indian Acres of The Chesapeake Bay (Holly Drive) Maryland Cecil 15 Low Unsatisfactory 1973 Recreation
Mason-Dixon Farms Irrigation Pond Maryland Frederick 15 Low Not Rated 1984 Irrigation
Twin Lakes Upper Pond (Hoile Lane) Maryland Calvert 15 Significant Satisfactory 1970 Recreation
Rolling Hills Swm Pond Maryland Montgomery 15 High Satisfactory 1982 Flood Risk Reduction
Jessup Park Dam Maryland Howard 15 Significant Poor 2010 Flood Risk Reduction
Mt Airy Park-N-Ride Swm Pond Maryland Frederick 15 Significant Fair 1972 Flood Risk Reduction
South Lake Swm Dam Maryland Prince George's 15 Low Satisfactory 2007 Flood Risk Reduction
St. Pauls Millpond Maryland Kent 15 Significant Poor 1900 Recreation
Joseph A. Banks Swm Pond Maryland Carroll 15 Low Not Rated 1975 Flood Risk Reduction
Allison Street Levee (Mt. Ranier) Maryland Prince George's 15 High Satisfactory 1988 Flood Risk Reduction
Ritchie Hill Swm Pond Maryland Prince George's 15 Significant Poor 2008 Flood Risk Reduction
Lake Bonnie Maryland Caroline 14 Low — 1850 Recreation
Stillpond Creek Dam Maryland Kent 14 Significant Fair 1963 Recreation
Riley Mill Dam - Lower Pond Maryland Kent 14 Low Poor 1950 Recreation
Snell Estates Maryland Carroll 14 Low Poor 1979 Irrigation
Riley Mill Pond Maryland Kent 14 Low Fair 1950 Recreation
Elgin Farm Pond Maryland Kent 14 Low Fair 1965 Recreation
Carroll County Air Business Center Swm Pond Maryland Carroll 14 Low Not Rated 1992 Flood Risk Reduction
Montgomery College - Rockville Campus - Swm Dam Maryland Montgomery 14 Significant Satisfactory 1965 Flood Risk Reduction
Tall Oaks Crossing (Peach Tree Lane) Maryland Prince George's 14 Significant Not Rated 1985 Recreation
Summit Hall Park Dam Maryland Montgomery 14 High Satisfactory 1993 Recreation
Myrtle Grove Lake Maryland Charles 14 Low Satisfactory 1965 Recreation
Laurel Lakes No 2 (Upper) Oxford Drive Maryland Prince George's 14 Low Satisfactory 1986 Recreation
Shipleys Crossing North Dam 2 (Wherry Ct) Maryland Anne Arundel 14 Significant Satisfactory 2008 Flood Risk Reduction
Tuckahoe State Park Dam (Crouse Mill Road) Maryland Queen Anne's 14 Low Fair 1975 Recreation
Laurel Lumber Dam Maryland Howard 14 Significant Satisfactory 2007 Flood Risk Reduction
South River Colony Parcel A Swm Lake Maryland Anne Arundel 14 Low Fair 1991 Flood Risk Reduction

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.