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 |
|---|---|---|---|---|---|---|---|
| New Bald Eagle Road Swm | Maryland | Prince George's | 44 | High | Poor | 2006 | Flood Risk Reduction |
| Oaks of Harford (Tollgate Road) | Maryland | Harford | 43 | Low | Not Rated | 1984 | Flood Risk Reduction |
| York Bldg Products Settling Pond 9 | Maryland | Cecil | 43 | Significant | Satisfactory | 1988 | Tailings |
| Centennial Park Dam | Maryland | Howard | 42 | High | Satisfactory | 1985 | Recreation |
| Lake Roland Dam | Maryland | Baltimore | 42 | High | Fair | 1861 | Recreation |
| Contee Main Settling Pond | Maryland | Prince George's | 41 | High | Unsatisfactory | 1973 | Tailings |
| Gilbert Run Dam 1 (Trinity Church) | Maryland | Charles | 41 | Significant | Poor | 1964 | Flood Risk Reduction |
| Woodlawn Railroad Embankment On Basin Run | Maryland | Cecil | 40 | High | Poor | 1940 | Other |
| Industrial Dam (Blue Bridge) | Maryland | Allegany | 40 | Low | - | 1954 | Water Supply |
| Towson Reservoir Storage Tanks | Maryland | Baltimore | 40 | High | Satisfactory | 2013 | Water Supply |
| Lake Ashburton Reservoir and Storage Tanks | Maryland | Baltimore City | 40 | High | Not Rated | 1910 | Water Supply |
| Lake Anita Louise | Maryland | Frederick | 40 | Low | Not Rated | 1973 | Recreation |
| Inspiration Lake | Maryland | Montgomery | 40 | High | Satisfactory | 1950 | Recreation |
| Reichs Ford Landfill Swm Dam | Maryland | Frederick | 39 | Low | Satisfactory | 1995 | Flood Risk Reduction |
| Umstc Lower Dam (Curie Drive) | Maryland | Prince George's | 38 | Significant | Fair | 2001 | Recreation |
| St Marys River Watershed Site 1 | Maryland | St. Mary's | 38 | High | Fair | 1975 | Recreation |
| Cove Point Lng Secondary Dam | Maryland | Calvert | 38 | Significant | Fair | 1974 | Tailings |
| Lake Arbor (Lake Arbor Way) | Maryland | Prince George's | 38 | High | Poor | 1971 | Recreation |
| Umbc Dam | Maryland | Baltimore | 38 | High | Satisfactory | 1976 | Flood Risk Reduction |
| Meadow Run Dam | Maryland | Garrett | 38 | High | Fair | 1969 | Recreation |
| Gilbert Run Dam 2 (Wheatley) | Maryland | Charles | 37 | Significant | Poor | 1968 | Recreation |
| Gilbert Run Dam 3 (Jameson Dam) | Maryland | Charles | 37 | High | Unsatisfactory | 1964 | Flood Risk Reduction |
| Broad Creek Dam | Maryland | Harford | 36 | High | Fair | 1948 | Recreation |
| Cox Creek Dmcf | Maryland | Anne Arundel | 36 | High | Satisfactory | 1960 | Tailings |
| Columbia Gateway Dam | Maryland | Howard | 36 | High | Fair | 1972 | Flood Risk Reduction |
| Dobbin Road Swm Pond | Maryland | Howard | 36 | Significant | Poor | 1987 | Flood Risk Reduction |
| Hillen Road Water Supply Tank | Maryland | Baltimore City | 36 | High | Satisfactory | 1920 | Water Supply |
| Little Youghiogheny Site 1 | Maryland | Garrett | 36 | High | Fair | 1964 | Flood Risk Reduction |
| Lake Whetstone Dam (Montgomery Village Avenue) | Maryland | Montgomery | 36 | High | Poor | 1966 | Recreation |
| Greencastle Lakes Dam (Ballinger Drive) | Maryland | Montgomery | 36 | Low | Satisfactory | 1965 | Recreation |
| Little Youghiogheny Site 3 | Maryland | Garrett | 35 | High | Fair | 1965 | Flood Risk Reduction |
| Lake Jenkins | Maryland | Washington | 35 | Low | Poor | 1936 | Recreation |
| Lake Walker Dam - Pond 1 (Montgomery Village Avenue) | Maryland | Montgomery | 35 | High | Satisfactory | 1966 | Recreation |
| Fedex Field Pond No. 1 | Maryland | Prince George's | 35 | High | Fair | 1997 | Flood Risk Reduction |
| Little Youghiogheny Site 2 | Maryland | Garrett | 35 | High | Fair | 1962 | Flood Risk Reduction |
| Guilford Reservoir Storage Tanks | Maryland | Baltimore City | 35 | High | Satisfactory | 1893 | Water Supply |
| Heritage Harbour (Mastline Drive) | Maryland | Anne Arundel | 34 | Low | Fair | 1974 | Recreation |
| Blairs Valley Dam | Maryland | Washington | 34 | High | Satisfactory | 1968 | Recreation |
| Great Falls Estate Dam | Maryland | Montgomery | 34 | Low | Not Rated | 1963 | Recreation |
| Greenspring East Swm Pond No. 3 (Stream Crossing Road) | Maryland | Baltimore | 34 | Low | Poor | 1995 | Flood Risk Reduction |
| Russett Center Lower Dam / Pond #1 | Maryland | Anne Arundel | 34 | Low | Satisfactory | 1990 | Flood Risk Reduction |
| Cohen Pond | Maryland | Frederick | 33 | Significant | Poor | 1952 | Recreation |
| Chestertown Stablization Pond No. 2 | Maryland | Kent | 32 | Low | Poor | 1967 | Other |
| Cranberry Branch Dam | Maryland | Carroll | 32 | Significant | Fair | 1957 | Water Supply |
| Parker Farms Dam | Maryland | Prince George's | 32 | Low | Poor | 1978 | Irrigation |
| Jessup Prison Dam | Maryland | Anne Arundel | 31 | Significant | Fair | 1982 | Flood Risk Reduction |
| Rattlewood Golf Course | Maryland | Montgomery | 31 | Significant | Satisfactory | 1975 | Irrigation |
| Boyd Farm Pond | Maryland | Talbot | 31 | Low | - | 1958 | Recreation |
| Prince George Country Club Dam (Pleasant Prospect) | Maryland | Prince George's | 30 | High | Poor | 1982 | Recreation |
| Willson Water Treatment Plant Levee | Maryland | Washington | 30 | Significant | Fair | 1927 | 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.