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 1–25 of 71
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Woodlawn Railroad Embankment On Basin Run Cecil County | 40 | 1940 | High | Poor |
| Wheaton Branch Storm Water Management Montgomery County | 27 | 1979 | High | Poor |
| Western Maryland 4h Center Garrett County | 22 | 1937 | Low | Poor |
| Volvo Hagerstown Swm Washington County | 10 | 1961 | Significant | Poor |
| Van Dusen Road Prince George's County | 24 | 1979 | Significant | Poor |
| Turkey Branch Levee (Asset 17673,17674 and 17675) Montgomery County | 12 | 1975 | Significant | Poor |
| Town Mall Swm Pond Carroll County | 12 | 1985 | Significant | Poor |
| Sunderland Railroad Embankment Pond Calvert County | 25 | 1850 | Low | Poor |
| Summit Creek - Mount Auburn Dr Prince George's County | 15 | 2000 | High | Poor |
| Summerfield Swm Pond No. 2 Prince George's County | 15 | — | High | Poor |
| Summerfield Swm Pond No. 1 (Chatsfield Way) Prince George's County | 23 | 1994 | High | Poor |
| St. Pauls Millpond Kent County | 15 | 1900 | Significant | Poor |
| Stoneleigh Community Pond (Stoneleigh Court) Calvert County | 24 | 1978 | Low | Poor |
| Starkey Pond Calvert County | 11 | 1950 | Low | Poor |
| Stancills INC. Settling Pond Cecil County | 26 | 1976 | Low | Poor |
| Snell Estates Carroll County | 14 | 1979 | Low | Poor |
| Shores of Calvert Upper Dam (Rivershore Drive) Calvert County | 25 | 1972 | Significant | Poor |
| Seneca State Park Dam (Seneca Creek Road) Montgomery County | 64 | 1975 | High | Poor |
| Rocky Gap Dam Allegany County | 98 | 1969 | High | Poor |
| Roberts Field Basin 2 (North Woods Trail Near Trophy Drive) Carroll County | 22 | 1992 | Significant | Poor |
| Ritchie Hill Swm Pond Prince George's County | 15 | 2008 | Significant | Poor |
| Riley Mill Dam - Lower Pond Kent County | 14 | 1950 | Low | Poor |
| Redington Lake Dam Prince George's County | 13 | 1940 | Low | Poor |
| Prince George Country Club Dam (Pleasant Prospect) Prince George's County | 30 | 1982 | High | Poor |
| Perryville Water Supply Cecil County | 15 | 1900 | Significant | Poor |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.