Wieser Lake Dam

TRIBUTARY TO OTTAWA RIVER· Allen, Ohio· Built 1870· Earth· 15 ft tall
Low Hazard Recreation Private

Key Takeaway

Wieser Lake Dam is classified as low hazard in Ohio. It was completed in 1870 and is 156 years old. Its primary use is recreation.

Physical Details

Dam Height 15 ft (taller than 12.4% in OH)
Dam Length182 ft
Dam TypeEarth
Max Storage76 acre-ft
Normal Storage41 acre-ft
Surface Area11 acres
Drainage Area1 sq mi
Max Discharge384 cfs
Year Completed1870 (156 years old)
NID IDOH00526

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: Yes
Last Inspection: June 8, 2022
State Regulated: Yes
Regulatory Agency: Department of Natural Resources

Ownership

Susan Wieser, Craig Nicholson

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Wieser Lake Dam?

Wieser Lake 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 Wieser Lake Dam?

Wieser Lake Dam is owned by Susan Wieser, Craig Nicholson (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Wieser Lake Dam built?

Wieser Lake 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 Wieser Lake Dam?

Wieser Lake 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 Wieser Lake Dam?

Wieser Lake Dam has a dam height of 15 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 Wieser Lake Dam last inspected?

Wieser Lake Dam was last inspected on June 8, 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.