Amann Reservoir Upper Dam
Amann Reservoir Upper Dam is an earth dam located in Morrow County, Ohio, built in 1964. It carries a Significant hazard potential classification and has a poor condition assessment.
About Amann Reservoir Upper Dam
The primary purpose of Amann Reservoir 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 Galion (local government). It impounds the Rocky Fork near Galion.
The dam stands 22 feet tall and stretches 300 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 220 acre-feet, and collects water from a drainage area of 10 square miles. Completed in 1964, 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 12/08/2020.
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Location
| State | Ohio |
| County | Morrow |
| Nearest City | Galion |
| River/Stream | Rocky Fork |
| Coordinates | 40.70917, -82.81944 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 300 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 220 acre-ft |
| Max Storage | 220 acre-ft |
| Normal Storage | 55 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 5,111 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | City of Galion |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 12/08/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OH02903 |
| Federal ID | OH02903 |
| More Info | State Dam Safety Program |