Ansonia Sewage Lagoon I

OFFSTREAM· Darke, Ohio· Built 1970· Earth· 12 ft tall
Significant Hazard Tailings Local Government

Key Takeaway

Ansonia Sewage Lagoon I is classified as significant hazard in Ohio. It was completed in 1970 and is 56 years old. Its primary use is tailings. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 12 ft (taller than 4.8% in OH)
Dam Length3,600 ft
Dam TypeEarth
Max Storage42 acre-ft
Normal Storage26 acre-ft
Surface Area10 acres
Drainage Area0 sq mi
Max Discharge3 cfs
Year Completed1970 (56 years old)
NID IDOH02686

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: No
Last Inspection: October 10, 2019
State Regulated: Yes
Regulatory Agency: Department of Natural Resources

Ownership

Village of Ansonia

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Ansonia Sewage Lagoon I?

Ansonia Sewage Lagoon I 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 Ansonia Sewage Lagoon I?

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

When was Ansonia Sewage Lagoon I built?

Ansonia Sewage Lagoon I was completed in 1970, making it 56 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 Ansonia Sewage Lagoon I?

Ansonia Sewage Lagoon I 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 Ansonia Sewage Lagoon I?

Ansonia Sewage Lagoon I has a dam height of 12 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 Ansonia Sewage Lagoon I last inspected?

Ansonia Sewage Lagoon I was last inspected on October 10, 2019. 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.