Manistique Lake Dam

Manistique River· Schoolcraft, Michigan· Built 1977· Gravity· 7 ft tall
Low Hazard Other Private

Key Takeaway

Manistique Lake Dam is classified as low hazard in Michigan. It was completed in 1977 and is 49 years old. Its primary use is other.

Physical Details

Dam Height 7 ft (taller than 1.3% in MI)
Dam Length60 ft
Dam TypeGravity
Max Storage28.0K acre-ft
Normal Storage20.2K acre-ft
Surface Area7,214 acres
Max Discharge560 cfs
Year Completed1977 (49 years old)
NID IDMI00334

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

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

Emergency Action Plan: No
Last Inspection: October 12, 2018
State Regulated: Yes
Regulatory Agency: MICHIGAN DEGLE

Ownership

Luce County Road Commission

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Manistique Lake Dam?

Manistique Lake Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Manistique Lake Dam?

Manistique Lake Dam is owned by Luce County Road Commission (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Manistique Lake Dam built?

Manistique Lake Dam was completed in 1977, making it 49 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 Manistique Lake Dam?

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

How tall is Manistique Lake Dam?

Manistique Lake Dam has a dam height of 7 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 Manistique Lake Dam last inspected?

Manistique Lake Dam was last inspected on October 12, 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.