Genoa Ug Sewage Disposal Lgn Cells 1,2,3&4 is an earth dam located in Ottawa County, Ohio, built in 1963. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 4,629 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Genoa Ug Sewage Disposal Lgn Cells 1,2,3&4
The primary purpose of Genoa Ug Sewage Disposal Lgn Cells 1,2,3&4 is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by Village of Genoa (local government). It impounds the Offstream near Genoa.
The dam stands 10 feet tall and stretches 4,629 feet across, creates a reservoir covering 24 acres, has a maximum storage capacity of 236 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 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 10/10/2024.
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Location
| State | Ohio |
| County | Ottawa |
| Nearest City | Genoa |
| River/Stream | Offstream |
| Coordinates | 41.51028, -83.34139 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 4,629 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 236 acre-ft |
| Max Storage | 236 acre-ft |
| Normal Storage | 173 acre-ft |
| Surface Area | 24 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 50 cfs |
Ownership & Safety
| Purpose | Tailings |
| Owner | Village of Genoa |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/10/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OH02960 |
| Federal ID | OH02960 |
| More Info | State Dam Safety Program |