Grenke Lake Dam

TRIBUTARY TO MILL CREEK· Ashtabula, Ohio· Earth· 16 ft tall
Low Hazard Recreation Private

Key Takeaway

Grenke Lake Dam is classified as low hazard in Ohio. Its primary use is recreation.

Physical Details

Dam Height 16 ft (taller than 15.8% in OH)
Dam Length400 ft
Dam TypeEarth
Max Storage76 acre-ft
Normal Storage51 acre-ft
Surface Area11 acres
Drainage Area1 sq mi
Max Discharge174 cfs
NID IDOH02777

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: October 6, 2021
State Regulated: Yes
Regulatory Agency: Department of Natural Resources

Ownership

Alfred & M. Grenke

Private

Nearby Dams

Lake Kenisee Dam

Ashtabula, OH

Significant Hazard 13 ft

Private Lake Dam

Ashtabula, OH

Low Hazard 19 ft

O'Brien Lake Dam

Ashtabula, OH

Significant Hazard 24 ft

Lindon Lake Dam

Ashtabula, OH

Low Hazard 27 ft

Lake George Dam

Ashtabula, OH

Significant Hazard 17 ft

Lake Asegra Dam

Ashtabula, OH

Significant Hazard 29 ft

Roaming Rock Shores Lake Dam

Ashtabula, OH

High Hazard 45 ft

Lenox Lakes Dam

Ashtabula, OH

Significant Hazard 28 ft

Frequently Asked Questions

What is the hazard classification of Grenke Lake Dam?

Grenke 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 Grenke Lake Dam?

Grenke Lake Dam is owned by Alfred & M. Grenke (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Grenke Lake Dam?

Grenke 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 Grenke Lake Dam?

Grenke Lake Dam has a dam height of 16 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 Grenke Lake Dam last inspected?

Grenke Lake Dam was last inspected on October 6, 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.