Dams in Montgomery County, Maryland
60Total Dams
17High Hazard
15Significant
Dam Safety in Montgomery County, Maryland
Montgomery County has 60 dams tracked in the National Inventory of Dams. Of these, 17 are classified as high hazard — meaning failure would probably cause loss of human life. Another 15 carry a significant hazard classification. Currently, 6 dams have a condition assessment of poor or unsatisfactory.
The average dam in Montgomery County is 51 years old. The most common purpose is flood risk reduction. The tallest dam is Little Seneca Dam at 99 ft.
Explore more: Oldest dams in Maryland · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Little Seneca Dam | High | Fair | 99 | Water Supply | 1984 |
| Brighton | High | Satisfactory | 82 | Hydroelectric | 1943 |
| Lake Frank | High | Fair | 78 | Recreation | 1967 |
| Lake Needwood | High | Fair | 65 | Recreation | 1965 |
| Seneca State Park Dam (seneca Creek Road) | High | Poor | 64 | Recreation | 1975 |
| Inspiration Lake | High | Satisfactory | 40 | Recreation | 1950 |
| Lake Whetstone Dam (montgomery Village Avenue) | High | Poor | 36 | Recreation | 1966 |
| Lake Walker Dam - Pond 1 (montgomery Village Avenue) | High | Satisfactory | 35 | Recreation | 1966 |
| Lake Helene Dam | High | Satisfactory | 27 | Recreation | 1950 |
| Crabbs Branch Swm Facility (redland Road) | High | Satisfactory | 27 | Flood Risk Reduction | 1983 |
| Wheaton Branch Storm Water Management | High | Poor | 27 | Flood Risk Reduction | 1979 |
| Falls Road Golf Course | High | Satisfactory | 25 | Irrigation | 1990 |
| Railroad Branch Swm Pond | High | Satisfactory | 25 | Flood Risk Reduction | 1990 |
| Gudelsky Pond Dam | High | Satisfactory | 20 | Flood Risk Reduction | 1987 |
| Fairfield East Dam | High | Fair | 18 | Flood Risk Reduction | 2004 |
| Rolling Hills Swm Pond | High | Satisfactory | 15 | Flood Risk Reduction | 1982 |
| Summit Hall Park Dam | High | Satisfactory | 14 | Recreation | 1993 |
| Rattlewood Golf Course | Significant | Satisfactory | 31 | Irrigation | 1975 |
| Lake Nirvana Dam (main Street) | Significant | Satisfactory | 29 | Recreation | 1967 |
| Gunners Lake (wisteria Drive) | Significant | Satisfactory | 28 | Recreation | 1985 |
| Cloppers Mill West Pond F (cricket Hill Drive) | Significant | Fair | 26 | Flood Risk Reduction | 1996 |
| Lake Placid Dam (edison Park Drive) | Significant | Satisfactory | 26 | Water Supply | 1963 |
| West Farm Regional Swm Pond | Significant | Satisfactory | 25 | Flood Risk Reduction | 1987 |
| Wheaton Regional Park Dam | Significant | Fair | 24 | Recreation | 1962 |
| Burnt Mills Dam | Significant | Fair | 23 | Recreation | 1930 |
| Ashton Community Pond Dam | Significant | Satisfactory | 22 | Recreation | 1959 |
| Manchester Farm Regional Swm Pond Dam | Significant | Fair | 21 | Flood Risk Reduction | 1996 |
| Chadswood Swm Pond (cross Laurel Drive) | Significant | Satisfactory | 20 | Flood Risk Reduction | 1981 |
| Montclair Manor Levee (asset 14616) | Significant | Fair | 15 | Flood Risk Reduction | 2004 |
| New Mark Commons Community Lake | Significant | Poor | 15 | Recreation | 1966 |
| Montgomery College - Rockville Campus - Swm Dam | Significant | Satisfactory | 14 | Flood Risk Reduction | 1965 |
| Turkey Branch Levee (asset 17673,17674 And 17675) | Significant | Poor | 12 | Flood Risk Reduction | 1975 |
| Lake Churchill (wynnfield Drive) | Low | Satisfactory | 44 | Recreation | 1971 |
| Greencastle Lakes Dam (ballinger Drive) | Low | Satisfactory | 36 | Recreation | 1965 |
| Great Falls Estate Dam | Low | Not Rated | 34 | Recreation | 1963 |
| Victory Farms | Low | Not Rated | 30 | Flood Risk Reduction | 1973 |
| Avenel - Tpc Dam #3 | Low | Fair | 30 | Recreation | 1986 |
| Hallowell Swm Dam | Low | Satisfactory | 29 | Flood Risk Reduction | 1990 |
| Montgomery Auto Park Dam | Low | Satisfactory | 29 | Flood Risk Reduction | 1987 |
| Martin Luther King Jr. Park Dam | Low | Fair | 27 | Flood Risk Reduction | 1978 |
| Lakeview Dam/westlake Dam | Low | Satisfactory | 26 | Recreation | 1960 |
| Milestone Swm Pond No. 4 | Low | Satisfactory | 26 | Flood Risk Reduction | 1995 |
| Sunshine Acres Pond | Low | Not Rated | 26 | Recreation | 1981 |
| Tower Oaks | Low | Satisfactory | 25 | Flood Risk Reduction | 1999 |
| Koteen Property Dam | Low | Not Rated | 25 | Flood Risk Reduction | 1991 |
| Poolesville Public Golf Course | Low | Satisfactory | 25 | Recreation | 1953 |
| North Creek Dam | Low | Satisfactory | 24 | Recreation | 1977 |
| Plumgar I Regional Swm Dam | Low | Not Rated | 24 | Flood Risk Reduction | 1989 |
| Rabbitt Road Swm Pond | Low | Not Rated | 23 | Flood Risk Reduction | 1981 |
| Little Bennett Golf Course | Low | Poor | 22 | Irrigation | 1992 |
| Germantown Estates Regional Facility Swm Dam (steeple Road) | Low | Satisfactory | 22 | Flood Risk Reduction | 1995 |
| Christie Estates Swm Dam (lindenwood Drive) | Low | Fair | 21 | Flood Risk Reduction | 1991 |
| Montgomery College - Germantown Campus - Swm Pond | Low | Satisfactory | 21 | Flood Risk Reduction | 1987 |
| Goldberg Pond | Low | Not Rated | 20 | Recreation | 1965 |
| Lake Varuna (lakelands Drive) | Low | Satisfactory | 18 | Flood Risk Reduction | 1992 |
| Seneca Meadows Swm Dam (seneca Meadows Pkwy) | Low | Fair | 17 | Flood Risk Reduction | 1994 |
| Lake Walker Dam - Pond 2 (russell Avenue) | Low | Satisfactory | 17 | Recreation | 1977 |
| Brighton West Swm Pond | Low | Satisfactory | 16 | Flood Risk Reduction | 1975 |
| Little Falls Dam - Potomac River | Low | 12 | Water Supply | 1958 | |
| Great Falls Dam, Lock No. 20 | Low | 8 | Navigation | 1850 |