Maryland Dams
425 dams tracked by the National Inventory of Dams
Total Dams
425
High Hazard
107
25.2%
Poor / Unsatisfactory
92
Average Age
60 yrs
Hazard Classification
High107 (25.2%)
Significant136 (32.0%)
Low181 (42.6%)
Condition Assessment
Satisfactory127 (29.9%)
Fair143 (33.6%)
Poor / Unsatisfactory92 (21.6%)
Not Rated63 (14.8%)
Federal
14
State
45
Local
166
Private
192
Tallest Dams
- Jennings Randolph Dam296 ft
- Savage River Dam184 ft
- Liberty Dam175 ft
- Prettyboy Dam155 ft
- T. Howard Duckett Dam139 ft
High Hazard Dams
Poor Condition Dams
- Liberty DamUnsatisfactory
- Druid Hill Lake Reservoir and Storage TanksPoor
- Rocky Gap DamPoor
- Piney Run DamUnsatisfactory
- Warner Gap Hollow DamUnsatisfactory
All Dams in Maryland
Showing 101–125 of 425
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Fedex Field Pond No. 1 Prince George's County | 35 | 1997 | High | Fair |
| Ferry Landing Woods Pond Calvert County | 22 | 1981 | Low | Fair |
| Fishing Creek Dam Frederick County | 58 | 1925 | High | Unsatisfactory |
| Foreman Branch Dam Queen Anne's County | 7 | 1955 | Low | Fair |
| Frederick Research Park Lot 4 Swm Pond Frederick County | 18 | 1988 | Low | Satisfactory |
| Frostburg Reservoir Garrett County | 46 | 1990 | High | Poor |
| Fullerton Reservoir Tanks Baltimore County | 15 | 2020 | High | Satisfactory |
| Galestown Millpond (Galestown-Reliance Road) Dorchester County | 9 | 1972 | Low | Not Rated |
| Gateway Village Pond Howard County | 19 | 1988 | Significant | Fair |
| Gbmc Pond Baltimore County | 13 | 1993 | Significant | Fair |
| Germantown Estates Regional Facility Swm Dam (Steeple Road) Montgomery County | 22 | 1995 | Low | Satisfactory |
| Gerwig Lane Swm Howard County | — | 1980 | High | Satisfactory |
| Gilbert Run Dam 1 (Trinity Church) Charles County | 41 | 1964 | Significant | Poor |
| Gilbert Run Dam 2 (Wheatley) Charles County | 37 | 1968 | Significant | Poor |
| Gilbert Run Dam 3 (Jameson Dam) Charles County | 37 | 1964 | High | Unsatisfactory |
| Glen Elyn Lower Dam (Forest Glen Drive) Harford County | 22 | 1975 | Significant | Fair |
| Glen Elyn Upper Dam Harford County | 19 | 1975 | Significant | Fair |
| Glenmar Pond 2 Dam Howard County | 3 | 1984 | Significant | Satisfactory |
| Goldberg Pond Montgomery County | 20 | 1965 | Low | Not Rated |
| Grande View Farms Community Pond Harford County | 22 | 1969 | Significant | Satisfactory |
| Great Falls Dam, Lock No. 20 Montgomery County | 8 | 1850 | Low | Not Rated |
| Great Falls Estate Dam Montgomery County | 34 | 1963 | Low | Not Rated |
| Great Star Drive Swm Dam Howard County | 20 | 1997 | Low | Satisfactory |
| Greenbelt Dam Prince George's County | 22 | 1936 | High | Satisfactory |
| Greenbrier State Park Dam & Dike Washington County | 64 | 1965 | High | Unsatisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.