Dams in Washington County, Maryland
21Total Dams
6High Hazard
6Significant
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Warner Gap Hollow Dam | High | Unsatisfactory | 65 | Water Supply | 1902 |
| Greenbrier State Park Dam & Dike | High | Unsatisfactory | 64 | Recreation | 1965 |
| Blairs Valley Dam | High | Satisfactory | 34 | Recreation | 1968 |
| Kurt Sherman Dam (upper Pond) | High | Fair | 28 | Recreation | 1957 |
| Lower Lake Royer | High | Fair | 19 | Water Supply | 1898 |
| Vista Business Park | High | Satisfactory | 13 | Flood Risk Reduction | 2020 |
| Willson Water Treatment Plant Levee | Significant | Fair | 30 | Flood Risk Reduction | 1927 |
| Potomac Dam No. 5 | Significant | Not Available | 20 | Fish and Wildlife Pond | 1830 |
| Potomac River Dam #4 | Significant | Not Available | 20 | Hydroelectric | 1869 |
| Oliver Company (lower Pond) | Significant | Poor | 18 | Recreation | 1957 |
| Smithsburg Reservoir | Significant | Fair | 16 | Water Supply | 1881 |
| Volvo Hagerstown Swm | Significant | Poor | 10 | Recreation | 1961 |
| Lake Jenkins | Low | Poor | 35 | Recreation | 1936 |
| Long Hollow Dam | Low | Poor | 25 | Recreation | 1940 |
| Valley Mall Expansion Swm Dam | Low | 19 | Flood Risk Reduction | 1987 | |
| Little Tonoloway Dam | Low | Fair | 17 | Recreation | 1953 |
| Cortland Manor Swm Dam | Low | Not Rated | 15 | Flood Risk Reduction | 2006 |
| Upper Lake Royer | Low | Fair | 12 | Water Supply | 1898 |
| Hagerstown City Park Lake (key Street) | Low | Satisfactory | 10 | Recreation | 1920 |
| Hagerstown Municipal Pwr Plant Dam | Low | Fair | 10 | Water Supply | 1950 |
| Hancock Sewage Lagoon | Low | Satisfactory | 8 | Other | 1963 |