Millecoquins Creek Dam

Trib Upper Millecoquin River· Mackinac, Michigan· Built 1965· Earth· 18 ft tall
Low Hazard Recreation State Government

Key Takeaway

Millecoquins Creek Dam is classified as low hazard in Michigan. It was completed in 1965 and is 61 years old. Its primary use is recreation.

Physical Details

Dam Height 18 ft (taller than 63.6% in MI)
Dam Length144 ft
Dam TypeEarth
Max Storage58 acre-ft
Normal Storage42 acre-ft
Surface Area8 acres
Drainage Area0 sq mi
Max Discharge64 cfs
Year Completed1965 (61 years old)
NID IDMI00386

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: August 14, 2018
State Regulated: Yes
Regulatory Agency: MICHIGAN DEGLE

Ownership

MDNR Fisheries

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Millecoquins Creek Dam?

Millecoquins Creek 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 Millecoquins Creek Dam?

Millecoquins Creek Dam is owned by MDNR Fisheries (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Millecoquins Creek Dam built?

Millecoquins Creek Dam was completed in 1965, making it 61 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 Millecoquins Creek Dam?

Millecoquins Creek 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 Millecoquins Creek Dam?

Millecoquins Creek Dam 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 Millecoquins Creek Dam last inspected?

Millecoquins Creek Dam was last inspected on August 14, 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.