Hunters Run Structure No. 1 Reservoir Report

Last Updated: December 5, 2025

Hunters Run Structure No.


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Summary

1, located in Fairfield, Ohio, is a significant earth dam designed by the USDA NRCS and completed in 1955 for the primary purpose of flood risk reduction along the Hunters Run stream. The dam stands at a height of 40.7 feet and has a length of 900 feet, providing a storage capacity of 586 acre-feet and a normal storage of 48.2 acre-feet. Its spillway type is uncontrolled, with a maximum discharge capacity of 619 cubic feet per second.

Managed by the DEPARTMENT OF NATURAL RESOURCES in Ohio, Hunters Run Structure No. 1 is regulated, permitted, inspected, and enforced by the state authorities to ensure its structural integrity and compliance with safety standards. The dam has been assessed to be in fair condition as of the last inspection in May 2017, with a significant hazard potential and a moderate risk rating. It is crucial for water resource and climate enthusiasts to monitor and support the maintenance and risk management measures of this important flood control structure to mitigate potential threats and safeguard the surrounding communities from flooding events.

Year Completed

1955

Dam Length

900

Dam Height

40.7

River Or Stream

HUNTERS RUN

Primary Dam Type

Earth

Surface Area

7.6

Drainage Area

1.06

Nid Storage

586

Outlet Gates

Uncontrolled

Hazard Potential

Significant

Foundations

Soil

Nid Height

41
       
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.