Mustinka River

Mustinka River· Grant, Minnesota· Built 1940· Gravity· 18 ft tall
Significant Hazard Recreation State Government

Key Takeaway

Mustinka River is classified as significant hazard in Minnesota. It was completed in 1940 and is 86 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 18 ft (taller than 57.4% in MN)
Dam Length50 ft
Dam TypeGravity
Max Storage1.3K acre-ft
Normal Storage700 acre-ft
Drainage Area163 sq mi
Max Discharge2,400 cfs
Year Completed1940 (86 years old)
Year Modified2000
NID IDMN00026

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: August 11, 2021
State Regulated: Yes
Regulatory Agency: MNDNR EWR

Ownership

MNDNR-EWR

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mustinka River?

Mustinka River 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 Mustinka River?

Mustinka River is owned by MNDNR-EWR (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mustinka River built?

Mustinka River was completed in 1940, making it 86 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 Mustinka River?

Mustinka River 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 Mustinka River?

Mustinka River has a dam height of 18 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 Mustinka River last inspected?

Mustinka River was last inspected on August 11, 2021. 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.