Happy Hills Lake Dam
Happy Hills Lake Dam is an earth dam located in Hocking County, Ohio, built in 1954. It carries a Significant hazard potential classification and has a poor condition assessment.
About Happy Hills Lake Dam
The primary purpose of Happy Hills Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Daren And Lorraine Carlson (private). It impounds the Tributary To East Branch Raccoon Creek near Coonville.
The dam stands 44 feet tall and stretches 395 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 66 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1954, the structure is well into its service life at over 50 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 05/13/2021.
At 44 feet, this dam is taller than 90% of dams nationwide.
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Location
| State | Ohio |
| County | Hocking |
| Nearest City | Coonville |
| River/Stream | Tributary To East Branch Raccoon Creek |
| Coordinates | 39.39389, -82.30500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 44 ft |
| Dam Height | 44 ft |
| Dam Length | 395 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 66 acre-ft |
| Max Storage | 66 acre-ft |
| Normal Storage | 59 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Daren and Lorraine Carlson |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 05/13/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OH01761 |
| Federal ID | OH01761 |
| More Info | State Dam Safety Program |