Horse Run No. 3 Dam Mb-40

TRIBUTARY TO HORSE RUN· Morgan, Ohio· Built 1961· Earth· 42 ft tall
Significant Hazard Tailings Private

Key Takeaway

Horse Run No. 3 Dam Mb-40 is classified as significant hazard in Ohio. It was completed in 1961 and is 65 years old. Its primary use is tailings. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 42 ft (taller than 85.4% in OH)
Dam Length400 ft
Dam TypeEarth
Max Storage347 acre-ft
Normal Storage114 acre-ft
Surface Area12 acres
Drainage Area1 sq mi
Max Discharge4,093 cfs
Year Completed1961 (65 years old)
NID IDOH00818

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: October 2, 2018
State Regulated: Yes
Regulatory Agency: Department of Natural Resources

Ownership

ODNR, Division of Wildlife

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Horse Run No. 3 Dam Mb-40?

Horse Run No. 3 Dam Mb-40 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 Horse Run No. 3 Dam Mb-40?

Horse Run No. 3 Dam Mb-40 is owned by ODNR, Division of Wildlife (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Horse Run No. 3 Dam Mb-40 built?

Horse Run No. 3 Dam Mb-40 was completed in 1961, making it 65 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 Horse Run No. 3 Dam Mb-40?

Horse Run No. 3 Dam Mb-40 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 Horse Run No. 3 Dam Mb-40?

Horse Run No. 3 Dam Mb-40 has a dam height of 42 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 Horse Run No. 3 Dam Mb-40 last inspected?

Horse Run No. 3 Dam Mb-40 was last inspected on October 2, 2018. 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.