Thomas Lake Dam

TRIBUTARY TO BENNETT RUN· Perry, Ohio· Earth· 27 ft tall
Low Hazard Tailings Private

Key Takeaway

Thomas Lake Dam is classified as low hazard in Ohio. Its primary use is tailings.

Physical Details

Dam Height 27 ft (taller than 51.3% in OH)
Dam Length437 ft
Dam TypeEarth
Max Storage66 acre-ft
Normal Storage46 acre-ft
Surface Area7 acres
Drainage Area0 sq mi
Max Discharge134 cfs
NID IDOH02258

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: November 7, 2018
State Regulated: Yes
Regulatory Agency: Department of Natural Resources

Ownership

CCU Mining LLC

Private

Nearby Dams

Crooksville Reservoir No. 3 Dam

Perry, OH

Low Hazard 36 ft

Allen No. 1 Dam

Perry, OH

High Hazard 59 ft

Allen No. 2 Dam (Racetrack Dam)

Perry, OH

Low Hazard 35 ft

San Toy Dam

Perry, OH

High Hazard 21 ft

Altiers Lake Dam

Perry, OH

High Hazard 19 ft

Siemer Pond Dam

Perry, OH

Significant Hazard 29 ft

New York Central Reservoir Dam

Perry, OH

Significant Hazard 12 ft

Muskingum River Lock and Dam No. 8

Morgan, OH

Significant Hazard 20 ft

Frequently Asked Questions

What is the hazard classification of Thomas Lake Dam?

Thomas 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 Thomas Lake Dam?

Thomas Lake Dam is owned by CCU Mining LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Thomas Lake Dam?

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

How tall is Thomas Lake Dam?

Thomas Lake Dam has a dam height of 27 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 Thomas Lake Dam last inspected?

Thomas Lake Dam was last inspected on November 7, 2018. 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.