Cooks Mill Dam

Portage River· Kalamazoo, Michigan· Built 1870· Earth· 18 ft tall
Low Hazard Recreation Private

Key Takeaway

Cooks Mill Dam is classified as low hazard in Michigan. It was completed in 1870 and is 156 years old. Its primary use is recreation.

Physical Details

Dam Height 18 ft (taller than 63.6% in MI)
Dam Length570 ft
Dam TypeEarth
Max Storage190 acre-ft
Normal Storage100 acre-ft
Surface Area9 acres
Drainage Area6 sq mi
Max Discharge460 cfs
Year Completed1870 (156 years old)
NID IDMI00139

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: July 29, 2002
State Regulated: Yes
Regulatory Agency: MICHIGAN DEGLE

Ownership

Rural Futures International

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Cooks Mill Dam?

Cooks Mill 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 Cooks Mill Dam?

Cooks Mill Dam is owned by Rural Futures International (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Cooks Mill Dam built?

Cooks Mill Dam was completed in 1870, making it 156 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 Cooks Mill Dam?

Cooks Mill 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 Cooks Mill Dam?

Cooks Mill 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 Cooks Mill Dam last inspected?

Cooks Mill Dam was last inspected on July 29, 2002. 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.