Winona Reservoir Reservoir Report

Last Updated: December 5, 2025

Winona Reservoir, located in Powell County, Kentucky, was completed in 1959 and is owned and regulated by the USDA Forest Service.


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Summary

The reservoir serves as a vital water supply source, with a normal storage capacity of 27 acre-feet and a maximum storage capacity of 200 acre-feet. The earth dam stands at a height of 40 feet, with a controlled spillway type to manage water discharge.

Despite its high hazard potential, Winona Reservoir has not been rated for its condition assessment. The reservoir is regularly inspected by the Forest Service, with the last inspection conducted in November 2017. The risk assessment for the reservoir is classified as very high, emphasizing the importance of effective risk management measures and emergency preparedness.

Water resource and climate enthusiasts will find Winona Reservoir to be a significant infrastructure for water supply in the area, with the potential to impact surrounding communities in the event of a hazard. The reservoir's strategic location and design highlight the importance of regular inspections and adherence to regulatory guidelines to ensure the safety and reliability of this critical water resource infrastructure.

Year Completed

1959

Dam Length

400

Dam Height

40

Primary Dam Type

Earth

Surface Area

12

Hydraulic Height

15

Drainage Area

1.33

Nid Storage

200

Structural Height

41

Outlet Gates

Valve

Hazard Potential

High

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.