Mccormack Dam

MC CORMACK HOLLOW· Oregon, Missouri· Built 1937· Earth· 27 ft tall
Significant Hazard Recreation Federal Government

Key Takeaway

Mccormack Dam is classified as significant hazard in Missouri. It was completed in 1937 and is 89 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 27 ft (taller than 49% in MO)
Dam Length366 ft
Dam TypeEarth
Max Storage148 acre-ft
Normal Storage88 acre-ft
Surface Area10 acres
Drainage Area4 sq mi
Max Discharge4,000 cfs
Year Completed1937 (89 years old)
NID IDMO30004

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: December 8, 2018
State Regulated: No

Ownership

USDA FS

Federal Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mccormack Dam?

Mccormack 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 Mccormack Dam?

Mccormack Dam is owned by USDA FS (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mccormack Dam built?

Mccormack Dam was completed in 1937, making it 89 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 Mccormack Dam?

Mccormack Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Mccormack Dam?

Mccormack Dam has a dam height of 27 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 Mccormack Dam last inspected?

Mccormack Dam was last inspected on December 8, 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.