Patterson Creek No.46 Reservoir Report
Last Updated: December 5, 2025
Patterson Creek No.46, also known as Painter Run or Ft.
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Summary
Ashby Lake, is a flood risk reduction dam located in Fort Ashby, West Virginia. Constructed in 1965 by the USDA NRCS, this earth dam stands at a height of 67 feet and has a hydraulic height of 62 feet. With a storage capacity of 624 acre-feet and a surface area of 14 acres, it plays a crucial role in managing floodwaters and protecting the surrounding area from potential hazards.
Managed by the local government and regulated by the West Virginia Department of Environmental Protection, Patterson Creek No.46 has a high hazard potential but is currently deemed to be in satisfactory condition. The dam's spillway is uncontrolled, and its outlet gates operate in the same manner. It is inspected every two years, with the last assessment conducted in April 2014. Despite its moderate risk assessment rating, the dam continues to serve its primary purpose of flood risk reduction effectively, showcasing the importance of proper infrastructure in water resource management and climate resilience efforts.
As a key feature in the Pittsburgh District's water management system, Patterson Creek No.46 serves as a vital component in safeguarding the local community and ecosystem. With its rock and soil foundations, the dam has withstood the test of time since its completion and remains a critical asset in the region's overall flood control strategy. As water resource and climate enthusiasts, it is essential to recognize the significance of structures like Patterson Creek No.46 in protecting our environment and enhancing our resilience to changing weather patterns and water-related risks.
Year Completed |
1965 |
Dam Length |
425 |
Dam Height |
67 |
River Or Stream |
PAINTER RUN |
Primary Dam Type |
Earth |
Surface Area |
14 |
Hydraulic Height |
62 |
Drainage Area |
1.76 |
Nid Storage |
624 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
67 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
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