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 181
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Milestone Swm Pond No. 4 Montgomery County | 26 | 1995 | Low | Satisfactory |
| Mill Creek Dam Dorchester County | 11 | 1930 | Low | Not Rated |
| Montebello Waste Water Lake Baltimore City County | 46 | 1915 | Low | Not Rated |
| Montgomery Auto Park Dam Montgomery County | 29 | 1987 | Low | Satisfactory |
| Montgomery College - Germantown Campus - Swm Pond Montgomery County | 21 | 1987 | Low | Satisfactory |
| Myrtle Grove Lake Charles County | 14 | 1965 | Low | Satisfactory |
| New Germany State Park Dam Garrett County | 12 | 1930 | Low | Satisfactory |
| Newpage Westvaco Dam Allegany County | 7 | 1913 | Low | Fair |
| Norris Dam St. Mary's County | 10 | 1990 | Low | Not Rated |
| North Creek Dam Montgomery County | 24 | 1977 | Low | Satisfactory |
| Oaks of Harford (Tollgate Road) Harford County | 43 | 1984 | Low | Not Rated |
| Old Loch Raven Dam Baltimore County | 20 | 1875 | Low | Not Rated |
| Panagopulos Farm Pond Cecil County | 20 | 1974 | Low | Not Rated |
| Parker Farms Dam Prince George's County | 32 | 1978 | Low | Poor |
| Parker Pond (N. Shumaker Drive) Wicomico County | 11 | 1956 | Low | Fair |
| Park Retreat Swm Pond Anne Arundel County | 20 | 2013 | Low | Not Rated |
| Penn East Business Park Dam Prince George's County | 26 | 2001 | Low | Fair |
| Perrywood (Water Fowl Way) Prince George's County | 19 | 2003 | Low | Fair |
| Piedmont Water Supply Intake Dam Garrett County | 8 | 1911 | Low | Not Rated |
| Platter Farm Pond Garrett County | 25 | 1968 | Low | Fair |
| Pleasant Hills Swm Dam (Gentlebrook Road) Baltimore County | 17 | 1988 | Low | Not Rated |
| Plumgar I Regional Swm Dam Montgomery County | 24 | 1989 | Low | Not Rated |
| Pocomoke City Sewage Lagoon No.1 (North Pond) Worcester County | 10 | 1972 | Low | Satisfactory |
| Pocomoke City Sewage Lagoon No. 2 (South Pond) Worcester County | 10 | 1972 | Low | Satisfactory |
| Poolesville Public Golf Course Montgomery County | 25 | 1953 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.