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 51–75 of 143
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Oakhurst Section 1 Swm Dam (Oakhurst Drive) Howard County | 12 | 1998 | Significant | Fair |
| Northridge Swm Pond (Quisinberry Way) Prince George's County | 28 | 1989 | Significant | Fair |
| Newpage Westvaco Dam Allegany County | 7 | 1913 | Low | Fair |
| Nagels Mill Pond Caroline County | 16 | 1860 | Significant | Fair |
| Mt Airy Park-N-Ride Swm Pond Frederick County | 15 | 1972 | Significant | Fair |
| Montgomery Run Swm Pond 1 (Montgomery Run Road) Howard County | 20 | 1990 | Significant | Fair |
| Montclair Manor Levee (Asset 14616) Montgomery County | 15 | 2004 | Significant | Fair |
| Monocacy Boulevard Dam Frederick County | 20 | 2011 | High | Fair |
| Mitchell Pond #1 (Nanticoke Road) Wicomico County | 9 | 1937 | Significant | Fair |
| Mezick Farm Pond Queen Anne's County | 16 | 1974 | Low | Fair |
| Medford Quarry Wash Pond Carroll County | 26 | 1988 | Significant | Fair |
| Meadow Run Dam Garrett County | 38 | 1969 | High | Fair |
| Martin Luther King Jr. Park Dam Montgomery County | 27 | 1978 | Low | Fair |
| Marlton South Swm Dam Prince George's County | 24 | 2000 | Low | Fair |
| Manchester Farm Regional Swm Pond Dam Montgomery County | 21 | 1996 | Significant | Fair |
| Madison Hill Swm Pond 1 (Silk Tree Drive) Prince George's County | 18 | 1994 | Significant | Fair |
| Lower Lake Royer Washington County | 19 | 1898 | High | Fair |
| Little Youghiogheny Site 7 Garrett County | 45 | 1960 | High | Fair |
| Little Youghiogheny Site 6 (Broadford) Garrett County | 60 | 1971 | High | Fair |
| Little Youghiogheny Site 5 Garrett County | 45 | 1968 | High | Fair |
| Little Youghiogheny Site 3 Garrett County | 35 | 1965 | High | Fair |
| Little Youghiogheny Site 2 Garrett County | 35 | 1962 | High | Fair |
| Little Youghiogheny Site 1 Garrett County | 36 | 1964 | High | Fair |
| Little Tonoloway Dam Washington County | 17 | 1953 | Low | Fair |
| Little Seneca Dam Montgomery County | 99 | 1984 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.