Blanchester Reservoir No. 5 Dam

OFFSTREAM· Clinton, Ohio· Built 1970· Earth· 14 ft tall
Significant Hazard Water Supply Local Government

Key Takeaway

Blanchester Reservoir No. 5 Dam is classified as significant hazard in Ohio. It was completed in 1970 and is 56 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 14 ft (taller than 9.6% in OH)
Dam Length4,574 ft
Dam TypeEarth
Max Storage227 acre-ft
Normal Storage154 acre-ft
Surface Area18 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1970 (56 years old)
NID IDOH00968

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: April 25, 2019
State Regulated: Yes
Regulatory Agency: Department of Natural Resources

Ownership

Village of Blanchester

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Blanchester Reservoir No. 5 Dam?

Blanchester Reservoir No. 5 Dam 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 Blanchester Reservoir No. 5 Dam?

Blanchester Reservoir No. 5 Dam is owned by Village of Blanchester (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Blanchester Reservoir No. 5 Dam built?

Blanchester Reservoir No. 5 Dam 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 Blanchester Reservoir No. 5 Dam?

Blanchester Reservoir No. 5 Dam 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 Blanchester Reservoir No. 5 Dam?

Blanchester Reservoir No. 5 Dam has a dam height of 14 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 Blanchester Reservoir No. 5 Dam last inspected?

Blanchester Reservoir No. 5 Dam was last inspected on April 25, 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.