Grand Rapids Dam

MAUMEE RIVER· Wood, Ohio· Built 1907· Concrete· 8 ft tall

High Hazard Recreation Water Supply State Government

Key Takeaway

Grand Rapids Dam is classified as high hazard in Ohio. It was completed in 1907 and is 119 years old. Its primary use is recreation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height	8 ft (taller than 0.2% in OH)
Dam Length	642 ft
Dam Type	Concrete
Max Storage	8.9K acre-ft
Normal Storage	8.9K acre-ft

Surface Area	1,785 acres
Drainage Area	0 sq mi
Year Completed	1907 (119 years old)
NID ID	OH02769

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

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

Emergency Action Plan: Yes

Last Inspection: May 10, 2022

State Regulated: Yes

Regulatory Agency: Department of Natural Resources

Ownership

ODNR, Division of Parks & Watercraft

State Government

Nearby Dams

Providence Dam

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High Hazard 9 ft

Mcclure Wwt Lagoon

Henry, OH

Significant Hazard 9 ft

Candlewood Lake Dam

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Significant Hazard 23 ft

East Candlewood Lake Dam

Wood, OH

Significant Hazard 18 ft

Evergreen Lake Dam

Lucas, OH

Low Hazard 20 ft

Bowling Green Upground Res & Sludge Lgns

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High Hazard 22 ft

Frequently Asked Questions

What is the hazard classification of Grand Rapids Dam?

Grand Rapids Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Grand Rapids Dam?

Grand Rapids Dam is owned by ODNR, Division of Parks & Watercraft (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Grand Rapids Dam built?

Grand Rapids Dam was completed in 1907, making it 119 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 Grand Rapids Dam?

Grand Rapids Dam serves the following purposes: Recreation, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Grand Rapids Dam?

Grand Rapids Dam has a dam height of 8 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 Grand Rapids Dam last inspected?

Grand Rapids Dam was last inspected on May 10, 2022. 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.