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
Condition Assessment
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 107
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Allison Street Levee (Mt. Ranier) Prince George's County | 15 | 1988 | High | Satisfactory |
| Aragona Village Prince George's County | 21 | 1991 | High | Poor |
| Ashcroft Drive - Woodbridge Pond Prince George's County | 20 | — | High | Fair |
| Atkisson Reservoir Harford County | 59 | 1942 | High | Unsatisfactory |
| Beaglin Park Dam (Beaglin Park Drive) Wicomico County | 23 | 1976 | High | Poor |
| Blairs Valley Dam Washington County | 34 | 1968 | High | Satisfactory |
| Bowie Town Center Lake Prince George's County | 20 | 1990 | High | Poor |
| Brighton Montgomery County | 82 | 1943 | High | Satisfactory |
| Broad Creek Dam Harford County | 36 | 1948 | High | Fair |
| Cash Lake Dam Prince George's County | 20 | 1939 | High | Fair |
| Catonsville Community Park Regional Swm Pond Dam (Ba-359) Baltimore County | 21 | 1985 | High | Fair |
| Centennial Park Dam Howard County | 42 | 1985 | High | Satisfactory |
| Chesapeake Ranch Estates Dam (Chisolm Trail) Calvert County | 46 | 1965 | High | Fair |
| Collington Facility 9 Dam (Dunwood Crossing Dr) Prince George's County | 21 | 1990 | High | Satisfactory |
| Columbia Gateway Dam Howard County | 36 | 1972 | High | Fair |
| Conowingo Cecil County | 94 | 1928 | High | Satisfactory |
| Contee Main Settling Pond Prince George's County | 41 | 1973 | High | Unsatisfactory |
| Cosca Regional Park Dam Prince George's County | 28 | 1970 | High | Fair |
| Coulbourn Mill Dam (South Division Street) Wicomico County | 12 | 1947 | High | Poor |
| Cox Creek Dmcf Anne Arundel County | 36 | 1960 | High | Satisfactory |
| Crabbs Branch Swm Facility (Redland Road) Montgomery County | 27 | 1983 | High | Satisfactory |
| Deep Creek Dam Garrett County | 85 | 1925 | High | Fair |
| Druid Hill Lake Reservoir and Storage Tanks Baltimore City County | 118 | 1871 | High | Poor |
| Dry Run Detention Dam and Culvert Allegany County | 16 | 1949 | High | Poor |
| Emmitsburg Dam Frederick County | 30 | 1950 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.