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 101–125 of 127
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Smithville Dam (Possum Hill Road) Caroline County | 14 | 1980 | Low | Satisfactory |
| South Lake Swm Dam Prince George's County | 15 | 2007 | Low | Satisfactory |
| St Clair Farm Pond Frederick County | 18 | 1968 | Significant | Satisfactory |
| Stonegate Swm Dam (Cherryfield Road) Prince George's County | 25 | 2003 | Low | Satisfactory |
| Strawberry Fields Howard County | 20 | 1985 | Significant | Satisfactory |
| Summit Hall Park Dam Montgomery County | 14 | 1993 | High | Satisfactory |
| Tinkers Creek Regional Swm Pond No. 8 Prince George's County | 18 | 1991 | Significant | Satisfactory |
| Tower Oaks Montgomery County | 25 | 1999 | Low | Satisfactory |
| Towson Reservoir Storage Tanks Baltimore County | 40 | 2013 | High | Satisfactory |
| Twin Lakes Upper Pond (Hoile Lane) Calvert County | 15 | 1970 | Significant | Satisfactory |
| Umbc Central Campus Dam Baltimore County | 10 | 1975 | Significant | Satisfactory |
| Umbc Dam Baltimore County | 38 | 1976 | High | Satisfactory |
| Urbana Frederick County | 25 | 1963 | Low | Satisfactory |
| Vista Business Park Washington County | 13 | 2020 | High | Satisfactory |
| Waiting Springs Swm Pond Howard County | 12 | 1971 | Significant | Satisfactory |
| Warfield Range Dam (Hunters Way) Howard County | 20 | 1980 | Significant | Satisfactory |
| West Farm Regional Swm Pond Montgomery County | 25 | 1987 | Significant | Satisfactory |
| Wilde Lake Dam Howard County | 28 | 1967 | Significant | Satisfactory |
| Williston Mill Dam (Md 617 Old Harmony Road) Caroline County | 18 | 1936 | Low | Satisfactory |
| Windgate Swm Dam 3 (Burtons Cove Way) Anne Arundel County | 23 | 1994 | Significant | Satisfactory |
| Wyndemere Swm Pond Howard County | 13 | 1995 | Significant | Satisfactory |
| York Bldg Products Settling Pond 12 Cecil County | 70 | 2004 | Significant | Satisfactory |
| York Bldg Products Settling Pond 13 Cecil County | 45 | 2016 | Significant | Satisfactory |
| York Bldg Products Settling Pond 9 Cecil County | 43 | 1988 | Significant | Satisfactory |
| York Building Products Pond No. 5 Cecil County | 44 | 1971 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.