Long Branch Reservoir Reservoir Report

Last Updated: December 9, 2025

Long Branch Reservoir, also known as Jonathan Larck Reservoir, is a captivating water resource located in FRAZIER'S BOTTOM, West Virginia.


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Summary

Built in 1992 for the primary purpose of water supply, this earth dam reaches a height of 109 feet and has a storage capacity of 1963 acre-feet. With a normal storage capacity of 1660 acre-feet and a surface area of 45 acres, the reservoir plays a vital role in water management in Putnam County, West Virginia.

Managed by the local government, Long Branch Reservoir is regulated by the West Virginia Department of Environmental Protection. Despite its high hazard potential, the dam is in satisfactory condition, as assessed in 2012. Regular inspections are conducted every two years to ensure its safety and functionality. The reservoir's location on the Long Branch Tri-of Poplar Fk. river stream adds to its significance in the region's water resource management.

For water resource and climate enthusiasts, Long Branch Reservoir offers a fascinating glimpse into the intricate network of dams and reservoirs that sustain communities and ecosystems. Its construction and maintenance highlight the importance of sustainable water supply infrastructure in the face of changing climate patterns. As a crucial component of water management in Putnam County, this reservoir serves as a reminder of the intricate balance between human needs and environmental stewardship in the management of our water resources.

Year Completed

1992

Dam Length

604

Dam Height

109

River Or Stream

LONG BRANCH TRI-OF POPLAR FK.

Primary Dam Type

Earth

Surface Area

45

Hydraulic Height

89

Nid Storage

1963

Hazard Potential

High

Nid Height

109
       
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.