Mill Creek Reservoir Report
Nearby: Tuscarora Lake Totem Lake
Last Updated: December 7, 2025
Mill Creek, located in Tuscarora Township, Pennsylvania, is a privately owned earth dam primarily used for recreation purposes.
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Summary
Built in 1954, this dam stands at a height of 12 feet and has a length of 200 feet, with a storage capacity of 190 acre-feet. The dam overlooks the picturesque Mill Creek, offering visitors a serene and scenic spot for outdoor activities.
Despite its fair condition assessment and high hazard potential, Mill Creek Dam is regulated by the Pennsylvania Department of Environmental Protection and undergoes regular state inspections, enforcement, and permitting. The dam features an uncontrolled spillway with a width of 65 feet and has a moderate risk assessment rating. The dam's flood risk management measures and emergency action plans are currently unlisted, suggesting a need for further preparedness and guidelines.
For water resource and climate enthusiasts, Mill Creek provides an intriguing case study in dam management and recreational infrastructure. With its unique design and historical significance, this dam serves as a vital asset for both water storage and outdoor recreation, highlighting the intersection of human development with natural resources in the Pennsylvania landscape.
Years Modified |
2004 - Hydraulic |
Year Completed |
1954 |
Dam Length |
200 |
Dam Height |
12 |
River Or Stream |
MILL CREEK |
Primary Dam Type |
Earth |
Surface Area |
21 |
Drainage Area |
1.3 |
Nid Storage |
190 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
12 |
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.
Mill Creek
Terrytown