Lake Henry Dam is an earth dam located in Jefferson County, Ohio, built in 1969. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 34 ft34 ft tall and 700 ft long, taller than 78% 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 Lake Henry Dam
The primary purpose of Lake Henry Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mingo Sportsman Club (private). It impounds the Slabcamp Creek near Valley Glenn.
The dam stands 34 feet tall and stretches 700 feet across, creates a reservoir covering 19 acres, has a maximum storage capacity of 484 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1969, the structure is well into its service life at over 50 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 06/13/2024.
At 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Ohio |
| County | Jefferson |
| Nearest City | Valley Glenn |
| River/Stream | Slabcamp Creek |
| Coordinates | 40.31111, -80.75000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 700 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 484 acre-ft |
| Max Storage | 484 acre-ft |
| Normal Storage | 161 acre-ft |
| Surface Area | 19 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 317 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Mingo Sportsman Club |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/13/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OH01066 |
| Federal ID | OH01066 |
| More Info | State Dam Safety Program |