Marysville Upground Reservoir

OFFSTREAM· Union, Ohio· Built 2009· Earth· 48 ft tall
High Hazard Water Supply Local Government

Key Takeaway

Marysville Upground Reservoir is classified as high hazard in Ohio. It was completed in 2009 and is 17 years old. Its primary use is water supply. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 48 ft (taller than 90.2% in OH)
Dam Length11,155 ft
Dam TypeEarth
Max Storage4.6K acre-ft
Normal Storage4.2K acre-ft
Surface Area114 acres
Drainage Area0 sq mi
Year Completed2009 (17 years old)
NID IDOH03166

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

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

Emergency Action Plan: Yes
Last Inspection: November 19, 2020
State Regulated: Yes
Regulatory Agency: Department of Natural Resources

Ownership

City of Marysville

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Marysville Upground Reservoir?

Marysville Upground Reservoir is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Marysville Upground Reservoir?

Marysville Upground Reservoir is owned by City of Marysville (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Marysville Upground Reservoir built?

Marysville Upground Reservoir was completed in 2009, making it 17 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 Marysville Upground Reservoir?

Marysville Upground Reservoir serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Marysville Upground Reservoir?

Marysville Upground Reservoir has a dam height of 48 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 Marysville Upground Reservoir last inspected?

Marysville Upground Reservoir was last inspected on November 19, 2020. 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.