Mallard Cove Lake Dam is an earth dam located in Hamilton County, Ohio, built in 1984. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 36 ft36 ft tall and 225 ft long, taller than 82% of U.S. dams with a recorded height. 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 Mallard Cove Lake Dam
The primary purpose of Mallard Cove Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Craig W.f. Hilsinger (private). It impounds the Tributary to Muddy Creek near Cincinnati.
The dam stands 36 feet tall and stretches 225 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 51 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1984, the structure is 42 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 06/03/2021.
At 36 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | Ohio |
| County | Hamilton |
| Nearest City | Cincinnati |
| River/Stream | Tributary to Muddy Creek |
| Coordinates | 39.14083, -84.66250 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 225 ft |
| Year Completed | 1984 (42 years old) |
Storage & Hydraulics
| NID Storage | 51 acre-ft |
| Max Storage | 51 acre-ft |
| Normal Storage | 25 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,155 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Craig W.f. Hilsinger |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 06/03/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OH01704 |
| Federal ID | OH01704 |
| More Info | State Dam Safety Program |