Plymouth Wastewater Lagoon
Plymouth Wastewater Lagoon is an earth dam located in Huron County, Ohio, built in 1966. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Plymouth Wastewater Lagoon
The primary purpose of Plymouth Wastewater Lagoon 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 Plymouth (local government). It impounds the Offstream near New Haven.
The dam stands 10 feet tall and stretches 2,262 feet across, has a maximum storage capacity of 67 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1966, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 05/27/2021.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Ohio |
| County | Huron |
| Nearest City | New Haven |
| River/Stream | Offstream |
| Coordinates | 41.01500, -82.67000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 2,262 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 67 acre-ft |
| Max Storage | 67 acre-ft |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Tailings |
| Owner | Village of Plymouth |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/27/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OH01017 |
| Federal ID | OH01017 |
| More Info | State Dam Safety Program |