Irving

Thornapple River· Barry, Michigan· Built 1939· Gravity· 18 ft tall
Low Hazard Hydroelectric Not Listed

Key Takeaway

Irving is classified as low hazard in Michigan. It was completed in 1939 and is 87 years old. Its primary use is hydroelectric.

Physical Details

Dam Height 18 ft (taller than 63.6% in MI)
Dam Length690 ft
Dam TypeGravity
Max Storage235 acre-ft
Normal Storage135 acre-ft
Surface Area25 acres
Drainage Area495 sq mi
Max Discharge13,600 cfs
Year Completed1939 (87 years old)
NID IDMI00542

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 15, 2021
State Regulated: No

Ownership

Not Listed

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Irving?

Irving 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 Irving?

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

When was Irving built?

Irving was completed in 1939, making it 87 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 Irving?

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

How tall is Irving?

Irving 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 Irving last inspected?

Irving was last inspected on July 15, 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.