Hankins Lake Dam Reservoir Report

Last Updated: December 5, 2025

Hankins Lake Dam, located in Morrow, Ohio, was completed in 1966 and stands at a height of 22.5 feet.


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Summary

This earth dam serves primarily for recreation purposes, providing a maximum storage capacity of 114.4 acre-feet and a normal storage of 43.6 acre-feet. The dam is situated on a tributary to Mile Rin and covers a surface area of 8.5 acres with a drainage area of 0.49 square miles.

Managed by a private owner, Hankins Lake Dam is regulated by the Department of Natural Resources in Ohio. Despite its low hazard potential, the dam is inspected every five years and has been deemed to be in satisfactory condition as of the last assessment in November 2019. With a spillway width of 0 feet and a maximum discharge capacity of 390 cubic feet per second, the dam ensures the safety and stability of the surrounding area.

Hankins Lake Dam offers a serene recreational spot for water resource and climate enthusiasts to enjoy. Its picturesque location and sustainable design make it an important asset for the community, providing both leisure and environmental benefits. As a well-maintained structure with state-regulated oversight, Hankins Lake Dam serves as a model for responsible water resource management in Ohio.

Year Completed

1966

Dam Length

380

Dam Height

22.5

River Or Stream

TRIBUTARY TO MILE RIN

Primary Dam Type

Earth

Surface Area

8.5

Drainage Area

0.49

Nid Storage

114.4

Hazard Potential

Low

Nid Height

23
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.