Amann Reservoir Dam
Amann Reservoir Dam is an earth dam located in Morrow County, Ohio, built in 1904. It carries a Significant hazard potential classification and has a poor condition assessment.
About Amann Reservoir Dam
The primary purpose of Amann Reservoir Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of Galion (local government). It impounds the Rocky Fork near Galion.
The dam stands 32 feet tall and stretches 550 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 262 acre-feet, and collects water from a drainage area of 11 square miles. Completed in 1904, the structure is over a century 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.
At 32 feet, this dam is taller than 76% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Ohio |
| County | Morrow |
| Nearest City | Galion |
| River/Stream | Rocky Fork |
| Coordinates | 40.71250, -82.82333 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 550 ft |
| Year Completed | 1904 (122 years old) |
Storage & Hydraulics
| NID Storage | 262 acre-ft |
| Max Storage | 262 acre-ft |
| Normal Storage | 134 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 11 sq mi |
| Max Discharge | 5,412 cfs |
Ownership & Safety
| Purpose | Water Supply |
| 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 | OH00687 |
| Federal ID | OH00687 |
| More Info | State Dam Safety Program |