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 351–375 of 425
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| South Lake Swm Dam Prince George's County | 15 | 2007 | Low | Satisfactory |
| South River Colony Parcel A Swm Lake Anne Arundel County | 14 | 1991 | Low | Fair |
| Spring Ridge Swm Pond No. D1 Frederick County | 16 | 1994 | Low | Not Rated |
| Stancills INC. Settling Pond Cecil County | 26 | 1976 | Low | Poor |
| Starkey Pond Calvert County | 11 | 1950 | Low | Poor |
| St Clair Farm Pond Frederick County | 18 | 1968 | Significant | Satisfactory |
| Stillpond Creek Dam Kent County | 14 | 1963 | Significant | Fair |
| St Marys River Watershed Site 1 St. Mary's County | 38 | 1975 | High | Fair |
| Stonegate Swm Dam (Cherryfield Road) Prince George's County | 25 | 2003 | Low | Satisfactory |
| Stoneleigh Community Pond (Stoneleigh Court) Calvert County | 24 | 1978 | Low | Poor |
| St. Pauls Millpond Kent County | 15 | 1900 | Significant | Poor |
| Strawberry Fields Howard County | 20 | 1985 | Significant | Satisfactory |
| Summerfield Swm Pond No. 1 (Chatsfield Way) Prince George's County | 23 | 1994 | High | Poor |
| Summerfield Swm Pond No. 2 Prince George's County | 15 | — | High | Poor |
| Summit Creek - Mount Auburn Dr Prince George's County | 15 | 2000 | High | Poor |
| Summit Hall Park Dam Montgomery County | 14 | 1993 | High | Satisfactory |
| Summit Lake Church Camp Dam Frederick County | 15 | 1930 | Low | Not Rated |
| Sunderland Railroad Embankment Pond Calvert County | 25 | 1850 | Low | Poor |
| Sunshine Acres Pond Montgomery County | 26 | 1981 | Low | Not Rated |
| Talbot Country Club Pond (Country Club Drive) Talbot County | 16 | 1963 | Low | Not Rated |
| Tall Oaks Crossing (Peach Tree Lane) Prince George's County | 14 | 1985 | Significant | Not Rated |
| Teels Lake Dam Kent County | 11 | 1961 | Low | Fair |
| T. Howard Duckett Dam Howard County | 139 | 1953 | High | Fair |
| Tinkers Creek Regional Swm Pond No. 8 Prince George's County | 18 | 1991 | Significant | Satisfactory |
| Tower Hill Community Pond Dam (Tower Hill Road) St. Mary's County | 18 | 1975 | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.