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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
Glen Elyn Lower Dam (Forest Glen Drive) Maryland Harford 22 Significant Fair 1975 Recreation
Roberts Field Basin 2 (North Woods Trail Near Trophy Drive) Maryland Carroll 22 Significant Poor 1992 Flood Risk Reduction
Mc Allister Pond No. 1 Maryland Charles 22 Low Poor 1967 Irrigation
Indian Creek Site 2 Maryland Prince George's 22 High Fair 1983 Flood Risk Reduction
Chartwell Country Club Dam Maryland Anne Arundel 22 Significant Satisfactory 2010 Irrigation
Pikesville Reservoir Storage Tanks Maryland Baltimore 22 High Satisfactory 2007 Water Supply
Rolling Green Community Pond Maryland Harford 22 Significant Satisfactory 1965 Recreation
Henson Creek Flood Control Dam #17 Maryland Prince George's 22 High Poor 1992 Flood Risk Reduction
Hobbits Glen Golf Course Dam Maryland Howard 22 Significant Satisfactory 1966 Irrigation
Ashton Community Pond Dam Maryland Montgomery 22 Significant Satisfactory 1959 Recreation
Grande View Farms Community Pond Maryland Harford 22 Significant Satisfactory 1969 Recreation
Bwi Pond B12 Maryland Anne Arundel 21 Significant Poor 1995 Flood Risk Reduction
Lake Louise Maryland Garrett 21 Significant Poor 1930 Recreation
Baugher Enterprises Dam Maryland Carroll 21 Low — 1990 Irrigation
Snowden Pond Maryland Prince George's 21 Low Unsatisfactory 1947 Fish and Wildlife Pond
Aragona Village Maryland Prince George's 21 High Poor 1991 Flood Risk Reduction
Laurel Lakes No 1 (Lower) Maryland Prince George's 21 High Poor 1986 Recreation
Collington Facility 9 Dam (Dunwood Crossing Dr) Maryland Prince George's 21 High Satisfactory 1990 Flood Risk Reduction
Christie Estates Swm Dam (Lindenwood Drive) Maryland Montgomery 21 Low Fair 1991 Flood Risk Reduction
Manchester Farm Regional Swm Pond Dam Maryland Montgomery 21 Significant Fair 1996 Flood Risk Reduction
Koontz Run Reservoir Tanks Maryland Allegany 21 High Satisfactory 2015 Water Supply
Montgomery College - Germantown Campus - Swm Pond Maryland Montgomery 21 Low Satisfactory 1987 Flood Risk Reduction
Catonsville Community Park Regional Swm Pond Dam (Ba-359) Maryland Baltimore 21 High Fair 1985 Flood Risk Reduction
Cristal Global Hawkins Point Plant Settling Basins Maryland Anne Arundel 21 Low Not Rated 1960 Other
Ashcroft Drive - Woodbridge Pond Maryland Prince George's 20 High Fair — Flood Risk Reduction
Warfield Range Dam (Hunters Way) Maryland Howard 20 Significant Satisfactory 1980 Flood Risk Reduction
Martindale Pond Maryland Harford 20 Significant Poor 1975 Recreation
Strawberry Fields Maryland Howard 20 Significant Satisfactory 1985 Flood Risk Reduction
Bowie Town Center Lake Maryland Prince George's 20 High Poor 1990 Flood Risk Reduction
Old Loch Raven Dam Maryland Baltimore 20 Low Not Rated 1875 Recreation
Goldberg Pond Maryland Montgomery 20 Low Not Rated 1965 Recreation
Park Retreat Swm Pond Maryland Anne Arundel 20 Low Not Rated 2013 Flood Risk Reduction
Potomac Dam No. 5 Maryland Washington 20 Significant Not Available 1830 Fish and Wildlife Pond
Mays Chapel Reservoir Maryland Baltimore 20 High Satisfactory 1965 Water Supply
Potomac River Dam #4 Maryland Washington 20 Significant Not Available 1869 Hydroelectric
Hanson Oaks Swm (Bmp Structure 1558-002) Maryland Prince George's 20 High Poor 1900 Flood Risk Reduction
Panagopulos Farm Pond Maryland Cecil 20 Low Not Rated 1974 Recreation
Running Hare Vineyard Lake Maryland Calvert 20 Low Unsatisfactory 1970 Fish and Wildlife Pond
Chadswood Swm Pond (Cross Laurel Drive) Maryland Montgomery 20 Significant Satisfactory 1981 Flood Risk Reduction
Johns Hopkins Bayview Campus Swm Pond Maryland Baltimore City 20 Significant Fair 2004 Flood Risk Reduction
Gudelsky Pond Dam Maryland Montgomery 20 High Satisfactory 1987 Flood Risk Reduction
Fairlee Lake Maryland Kent 20 Low Poor 1828 Recreation
Holly House Meadows Dam Maryland Howard 20 High Satisfactory 1983 Recreation
Lonaconing Reservoir Maryland Allegany 20 High Poor 1895 Water Supply
Montgomery Run Swm Pond 1 (Montgomery Run Road) Maryland Howard 20 Significant Fair 1990 Flood Risk Reduction
Queen Annes Village Swm Pond No. 1 Maryland Baltimore 20 Significant Fair 2007 Flood Risk Reduction
Wye Mills Dam Maryland Queen Anne's 20 Significant Fair 1682 Recreation
Cash Lake Dam Maryland Prince George's 20 High Fair 1939 Fish and Wildlife Pond
Monocacy Boulevard Dam Maryland Frederick 20 High Fair 2011 Flood Risk Reduction
Great Star Drive Swm Dam Maryland Howard 20 Low Satisfactory 1997 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.