Thor Lake Dam

TRIBUTARY TO PAINT CREEK· Preble, Ohio· Built 1970· Earth· 39 ft tall
Low Hazard Recreation Private

Key Takeaway

Thor Lake Dam is classified as low hazard in Ohio. It was completed in 1970 and is 56 years old. Its primary use is recreation.

Physical Details

Dam Height 39 ft (taller than 81.2% in OH)
Dam Length720 ft
Dam TypeEarth
Max Storage170 acre-ft
Normal Storage97 acre-ft
Surface Area10 acres
Drainage Area0 sq mi
Max Discharge1,386 cfs
Year Completed1970 (56 years old)
NID IDOH00157

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: May 20, 2021
State Regulated: Yes
Regulatory Agency: Department of Natural Resources

Ownership

Lakengren Property Owners Assn.

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Thor Lake Dam?

Thor 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 Thor Lake Dam?

Thor Lake Dam is owned by Lakengren Property Owners Assn. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Thor Lake Dam built?

Thor Lake Dam was completed in 1970, making it 56 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 Thor Lake Dam?

Thor 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 Thor Lake Dam?

Thor Lake Dam has a dam height of 39 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 Thor Lake Dam last inspected?

Thor Lake Dam was last inspected on May 20, 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.