Plymouth Wastewater Lagoon

OFFSTREAM· Huron, Ohio· Built 1966· Earth· 10 ft tall
Significant Hazard Tailings Local Government

Key Takeaway

Plymouth Wastewater Lagoon is classified as significant hazard in Ohio. It was completed in 1966 and is 60 years old. Its primary use is tailings. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 10 ft (taller than 2.3% in OH)
Dam Length2,262 ft
Dam TypeEarth
Max Storage68 acre-ft
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1966 (60 years old)
NID IDOH01017

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes
Last Inspection: May 27, 2021
State Regulated: Yes
Regulatory Agency: Department of Natural Resources

Ownership

Village of Plymouth

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Plymouth Wastewater Lagoon?

Plymouth Wastewater Lagoon is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Plymouth Wastewater Lagoon?

Plymouth Wastewater Lagoon is owned by Village of Plymouth (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Plymouth Wastewater Lagoon built?

Plymouth Wastewater Lagoon was completed in 1966, making it 60 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Plymouth Wastewater Lagoon?

Plymouth Wastewater Lagoon serves the following purposes: Tailings. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Plymouth Wastewater Lagoon?

Plymouth Wastewater Lagoon has a dam height of 10 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Plymouth Wastewater Lagoon last inspected?

Plymouth Wastewater Lagoon was last inspected on May 27, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.