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 26–50 of 136
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Diversified Lane Pond Dam Howard County | 8 | 1992 | Significant | Satisfactory |
| Dobbin Road Swm Pond Howard County | 36 | 1987 | Significant | Poor |
| Don Pleasants Dam Allegany County | 50 | 1977 | Significant | Satisfactory |
| Eden Mill Dam Harford County | 18 | 1917 | Significant | Fair |
| Gateway Village Pond Howard County | 19 | 1988 | Significant | Fair |
| Gbmc Pond Baltimore County | 13 | 1993 | Significant | Fair |
| Gilbert Run Dam 1 (Trinity Church) Charles County | 41 | 1964 | Significant | Poor |
| Gilbert Run Dam 2 (Wheatley) Charles County | 37 | 1968 | Significant | Poor |
| Glen Elyn Lower Dam (Forest Glen Drive) Harford County | 22 | 1975 | Significant | Fair |
| Glen Elyn Upper Dam Harford County | 19 | 1975 | Significant | Fair |
| Glenmar Pond 2 Dam Howard County | 3 | 1984 | Significant | Satisfactory |
| Grande View Farms Community Pond Harford County | 22 | 1969 | Significant | Satisfactory |
| Greenspring Quarry Dam Baltimore County | 16 | 2007 | Significant | Fair |
| Guilford Road Dam Howard County | — | — | Significant | Poor |
| Gunners Lake (Wisteria Drive) Montgomery County | 28 | 1985 | Significant | Satisfactory |
| Hall Creek Dam Cecil County | 11 | 1930 | Significant | Unsatisfactory |
| Heritage Glen Dam Prince George's County | 12 | 2004 | Significant | Satisfactory |
| Hobbits Glen Golf Course Dam Howard County | 22 | 1966 | Significant | Satisfactory |
| Holly Hills Section 4 Swm Pond 1 Frederick County | 26 | 2001 | Significant | Satisfactory |
| Hunters Run Swm Dam Harford County | 24 | 1996 | Significant | Satisfactory |
| Jennifer Road Swm Route 50 and Route 2 (Sha Bmp 020259) Anne Arundel County | 47 | 1985 | Significant | Not Rated |
| Jessup Park Dam Howard County | 15 | 2010 | Significant | Poor |
| Jessup Prison Dam Anne Arundel County | 31 | 1982 | Significant | Fair |
| Johns Hopkins Bayview Campus Swm Pond Baltimore City County | 20 | 2004 | Significant | Fair |
| Johnsons Pond Wicomico County | 23 | 1936 | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.