Old Keyser Reservoir Reservoir Report

Last Updated: December 5, 2025

Old Keyser Reservoir, also known as Old Limestone Dam, is a concrete dam located in Mineral County, West Virginia.


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Summary

Built in 1911, this local government-owned structure serves as a water supply source in the area, specifically for the city of WATER SUPPLY. Situated on LIMESTONE RUN, the reservoir has a height of 25 feet and can hold up to 62 acre-feet of water, with a normal storage capacity of 44 acre-feet.

With a hazard potential rated as high and a fair condition assessment as of 2014, Old Keyser Reservoir plays a crucial role in the region's water resource management. The dam has a length of 332 feet and a maximum storage capacity of 62 acre-feet, covering a surface area of 5 acres. Despite not being regulated by the state, the reservoir undergoes inspections every 2 years to ensure its structural integrity and safety for the surrounding community.

Old Keyser Reservoir stands as a historic water infrastructure that continues to provide vital water resources to the residents of Mineral County. With a solid concrete construction and a long-standing presence in the area, this reservoir represents a key component in the local water supply system. As climate change impacts water resources, the maintenance and management of structures like Old Keyser Reservoir become increasingly important to ensure sustainable access to clean water for the community.

Year Completed

1911

Dam Length

332

Dam Height

25

River Or Stream

LIMESTONE RUN

Primary Dam Type

Concrete

Surface Area

5

Hydraulic Height

23

Nid Storage

62

Hazard Potential

High

Nid Height

25
       
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.