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 143
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| York Bldg Products Settling Pond 11 Cecil County | 51 | 1999 | Significant | Fair |
| York Bldg Products Settling Pond 10 Cecil County | 48 | 1991 | Significant | Fair |
| Wye Mills Dam Queen Anne's County | 20 | 1682 | Significant | Fair |
| Willson Water Treatment Plant Levee Washington County | 30 | 1927 | Significant | Fair |
| Wheaton Regional Park Dam Montgomery County | 24 | 1962 | Significant | Fair |
| Westlake Village Lake 3 Charles County | 11 | 1984 | Low | Fair |
| Watts Farm Pond Kent County | 16 | 1977 | Low | Fair |
| Waterfront Greens Community Pond Garrett County | 29 | 1986 | Low | Fair |
| Village of Scots Fancy Swm Pond (Starmount Lane) Harford County | 27 | 1991 | Significant | Fair |
| Victoria Station Community Lake Calvert County | 27 | 1986 | High | Fair |
| Velvet Hills South Swm Dam Baltimore County | 15 | 1987 | Significant | Fair |
| Urieville Dam (Augustine Herman Hwy) Kent County | 17 | 1955 | Low | Fair |
| Upper Potomac Industrial Park Levee Allegany County | 8 | 2005 | High | Fair |
| Upper Lake Royer Washington County | 12 | 1898 | Low | Fair |
| Unicorn Branch Dam Queen Anne's County | 13 | 1964 | Significant | Fair |
| Umstc Lower Dam (Curie Drive) Prince George's County | 38 | 2001 | Significant | Fair |
| Tuckahoe State Park Dam (Crouse Mill Road) Queen Anne's County | 14 | 1975 | Low | Fair |
| Tower Hill Community Pond Dam (Tower Hill Road) St. Mary's County | 18 | 1975 | Significant | Fair |
| T. Howard Duckett Dam Howard County | 139 | 1953 | High | Fair |
| Teels Lake Dam Kent County | 11 | 1961 | Low | Fair |
| St Marys River Watershed Site 1 St. Mary's County | 38 | 1975 | High | Fair |
| Stillpond Creek Dam Kent County | 14 | 1963 | Significant | Fair |
| South River Colony Parcel A Swm Lake Anne Arundel County | 14 | 1991 | Low | Fair |
| Soil Conservation Service Lake (Soil Conservation Road) Prince George's County | 17 | 1939 | Low | Fair |
| Smithsburg Reservoir Washington County | 16 | 1881 | Significant | Fair |
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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.