Hillman

Thunder Bay· Montmorency, Michigan· Built 1895· Gravity· 16 ft tall
Low Hazard Hydroelectric Recreation Not Listed

Key Takeaway

Hillman is classified as low hazard in Michigan. It was completed in 1895 and is 131 years old. Its primary use is hydroelectric.

Physical Details

Dam Height 16 ft (taller than 55.7% in MI)
Dam Length128 ft
Dam TypeGravity
Max Storage500 acre-ft
Normal Storage500 acre-ft
Surface Area160 acres
Drainage Area249 sq mi
Max Discharge2,100 cfs
Year Completed1895 (131 years old)
NID IDMI00173

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: September 17, 2019
State Regulated: No

Ownership

Not Listed

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Hillman?

Hillman 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 Hillman?

Hillman is owned by information not available (Not Listed). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Hillman built?

Hillman was completed in 1895, making it 131 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 Hillman?

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

How tall is Hillman?

Hillman has a dam height of 16 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 Hillman last inspected?

Hillman was last inspected on September 17, 2019. 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.