Wildewood Dam on St Marys River is an earth dam located in St. Mary's County, Maryland, built in 1989. It carries a Low hazard potential classification.
Dam profile
NID height · 10 ft10 ft tall and 142 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Wildewood Dam on St Marys River
The primary purpose of Wildewood Dam on St Marys River is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by _unknown (private). It impounds the St. Marys River near California.
The dam stands 10 feet tall and stretches 142 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 75 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1989, the structure is 37 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 12/11/2024.
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Location
| State | Maryland |
| County | St. Mary's |
| Nearest City | California |
| River/Stream | St. Marys River |
| Coordinates | 38.30740, -76.53739 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 142 ft |
| Year Completed | 1989 (37 years old) |
Storage & Hydraulics
| NID Storage | 76 acre-ft |
| Max Storage | 75 acre-ft |
| Normal Storage | 76 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 4,842 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | _unknown |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 12/11/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MD00541 |
| Federal ID | MD00541 |
| More Info | State Dam Safety Program |