Hughes Hollow Slurry Impoundment Reservoir Report
Last Updated: December 5, 2025
Hughes Hollow Slurry Impoundment in Greene, Pennsylvania, is a privately owned structure regulated by the Pennsylvania Department of Environmental Protection.
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Summary
Located in Wayne Township, this Earth-type dam stands at a height of 245 feet and stretches 1350 feet in length, with a storage capacity of 3905 acre-feet. Despite its significant size, the dam is rated as having a high hazard potential but maintains a satisfactory condition based on the last inspection in March 2021.
The impoundment, situated along Hughes Run, serves a primary purpose that is classified as "Other," with a normal storage capacity of 3548 acre-feet and a surface area of 50 acres. While the dam lacks specific details on its spillway type and spillway width, it is equipped for inspections and enforcement by the state regulatory agency. The risk assessment and emergency action plan status for the site remain unclear, underscoring the need for further evaluation and preparedness in the event of an emergency related to the dam's operation.
For water resource and climate enthusiasts, the Hughes Hollow Slurry Impoundment represents a key infrastructure in Pennsylvania that requires ongoing monitoring and maintenance to ensure public safety and environmental protection. With its substantial storage capacity and high hazard potential, stakeholders must stay vigilant in addressing any potential risks associated with this dam to mitigate the impact on downstream areas and the surrounding ecosystem.
Dam Length |
1350 |
Dam Height |
245 |
River Or Stream |
HUGHES RUN |
Primary Dam Type |
Earth |
Surface Area |
50 |
Drainage Area |
0.13 |
Nid Storage |
3905 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
245 |
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.
Hughes Hollow Slurry Impoundment