Twin Lakes Upper Dam
Twin Lakes Upper Dam is an earth dam located in Franklin County, Ohio, built in 1927. It carries a Significant hazard potential classification and has a poor condition assessment.
About Twin Lakes Upper Dam
The primary purpose of Twin Lakes Upper Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by City Of Columbus (local government). It impounds the Bliss Run near Columbus.
The dam stands 25 feet tall and stretches 221 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 61 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1927, the structure is well-established, with more than 75 years of service.
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 12/21/2020.
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Location
| State | Ohio |
| County | Franklin |
| Nearest City | Columbus |
| River/Stream | Bliss Run |
| Coordinates | 39.94028, -82.93194 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 221 ft |
| Year Completed | 1927 (99 years old) |
Storage & Hydraulics
| NID Storage | 61 acre-ft |
| Max Storage | 61 acre-ft |
| Normal Storage | 19 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 1,150 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | City of Columbus |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 12/21/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OH01590 |
| Federal ID | OH01590 |
| More Info | State Dam Safety Program |