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 76–100 of 425
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Soil Conservation Service Lake (Soil Conservation Road) Prince George's County | 17 | 1939 | Low | Fair |
| Snowden Pond Prince George's County | 21 | 1947 | Low | Unsatisfactory |
| Snell Estates Carroll County | 14 | 1979 | Low | Poor |
| Smithville Dam (Possum Hill Road) Caroline County | 14 | 1980 | Low | Satisfactory |
| Smithsburg Reservoir Washington County | 16 | 1881 | Significant | Fair |
| Shores of Calvert Upper Dam (Rivershore Drive) Calvert County | 25 | 1972 | Significant | Poor |
| Shores of Calvert Lower Dam Calvert County | 15 | 1972 | Low | Fair |
| Shipleys Crossing North Dam 2 (Wherry Ct) Anne Arundel County | 14 | 2008 | Significant | Satisfactory |
| Shipleys Crossing North Dam 1 (Galiot Dr) Anne Arundel County | 9 | 2008 | Significant | Satisfactory |
| Shellman Farm Dam Kent County | 10 | 1979 | Low | Fair |
| Seven Oaks Swm Dam Anne Arundel County | 17 | 1989 | Low | Satisfactory |
| Seneca State Park Dam (Seneca Creek Road) Montgomery County | 64 | 1975 | High | Poor |
| Seneca Meadows Swm Dam (Seneca Meadows Pkwy) Montgomery County | 17 | 1994 | Low | Fair |
| Scull Farm Pond Caroline County | 22 | 1974 | Low | Fair |
| Savage River Dam Garrett County | 184 | 1952 | High | Satisfactory |
| Sassafras Mill Dam Kent County | 10 | 1934 | Significant | Fair |
| Saefern Dam Anne Arundel County | 26 | 1967 | Low | Fair |
| Russett Center Upper Dam / Pond #2 (Ridgemere Crossing) Anne Arundel County | 27 | 1990 | Low | Satisfactory |
| Russett Center Lower Dam / Pond #1 Anne Arundel County | 34 | 1990 | Low | Satisfactory |
| Running Hare Vineyard Lake Calvert County | 20 | 1970 | Low | Unsatisfactory |
| Rolling Hills Swm Pond Montgomery County | 15 | 1982 | High | Satisfactory |
| Rolling Green Community Pond Harford County | 22 | 1965 | Significant | Satisfactory |
| Roland Run Levee Baltimore County | 15 | 1982 | High | Fair |
| Roeder Farm Pond Allegany County | 12 | 1974 | Low | Fair |
| Rocky Gap Dam Allegany County | 98 | 1969 | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.