Big Rock Lake Dam
Big Rock Lake Dam is an earth dam located in Columbiana County, Ohio, built in 1963. It carries a Low hazard potential classification and has a fair condition assessment.
About Big Rock Lake Dam
The primary purpose of Big Rock Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Big Rock Lake Llc (private). It impounds the Tributary To East Branch near Leetonia.
The dam stands 32 feet tall and stretches 970 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 159 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1963, 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 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 06/12/2024.
At 32 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Ohio |
| County | Columbiana |
| Nearest City | Leetonia |
| River/Stream | Tributary To East Branch |
| Coordinates | 40.85667, -80.75167 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 970 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 159 acre-ft |
| Max Storage | 159 acre-ft |
| Normal Storage | 99 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,179 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Big Rock Lake LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/12/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OH00323 |
| Federal ID | OH00323 |
| More Info | State Dam Safety Program |