Town Of Boone Water Supply Dam Reservoir Report

Last Updated: December 5, 2025

The Town of Boone Water Supply Dam, also known as Winklers Creek Lake Dam, is a crucial structure in Watauga, North Carolina, designed to support the local government's water supply needs.


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Summary

Completed in 1957, this earth dam stands at a structural height of 77 feet and has a hydraulic height of 69 feet, with a capacity to store 226 acre-feet of water. Situated on the North Prong Flannery Fork, this dam serves as a vital component in managing the region's water resources, with a normal storage capacity of 132 acre-feet and a drainage area of 582 square miles.

Despite being classified with a high hazard potential, the Town of Boone Water Supply Dam has been assessed as satisfactory in condition, with the last inspection conducted in November 2019. Owned by the local government and regulated by the North Carolina Department of Environmental Quality's Dam Safety Program, this dam plays a crucial role in ensuring a stable water supply for the residents of Boone. With a maximum discharge capacity of 4100 cubic feet per second and a surface area of 11 acres, this dam is a key infrastructure supporting water management in the region.

Located in the Huntington District under the jurisdiction of the state, the Town of Boone Water Supply Dam is a testament to effective water resource management. With a solid track record of inspections and enforcement, this dam remains a vital structure in maintaining water security for the community. As climate change continues to impact water resources, the significance of structures like the Town of Boone Water Supply Dam in ensuring sustainable water supply becomes increasingly evident for water resource and climate enthusiasts.

Year Completed

1957

Dam Length

275

River Or Stream

North Prong Flannery Fork

Primary Dam Type

Earth

Surface Area

11

Hydraulic Height

69

Drainage Area

582

Nid Storage

226

Structural Height

77

Hazard Potential

High

Nid Height

77
       
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.