Lake Mount Union Reservoir Report
Nearby: Dark Hollow Raystown Dam
Last Updated: December 15, 2025
Lake Mount Union, located in Huntingdon, Pennsylvania, is a concrete dam constructed in 1927 with a primary purpose of water supply.
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Summary
With a dam height of 51 feet and a storage capacity of 211 acre-feet, the reservoir covers a surface area of 10 acres and serves as a critical source of water for the surrounding area. Managed by the Pennsylvania Department of Environmental Protection, Lake Mount Union is regulated, inspected, and enforced by state authorities to ensure its structural integrity and safe operation.
The dam on Lake Mount Union poses a high hazard potential, but its condition assessment is deemed satisfactory as of the last inspection in November 2019. Despite its age, the dam remains in good standing, meeting state regulatory standards for water resource management. As a vital water supply infrastructure in Shirley Township, Lake Mount Union plays a crucial role in ensuring a reliable water source for the local community and highlights the importance of maintaining and monitoring dam structures in the face of changing climate conditions.
Enthusiasts interested in water resources and climate resilience can appreciate Lake Mount Union as a key component of the water supply system in Huntingdon, Pennsylvania. The reservoir's historical significance, coupled with its regulatory oversight and maintenance, underscores the importance of sustainable water management practices in the context of climate change. As water resource enthusiasts continue to advocate for the preservation and enhancement of water infrastructure, Lake Mount Union stands out as a prime example of a well-managed reservoir that serves both its primary purpose and the broader community's water needs.
Year Completed |
1927 |
Dam Length |
303 |
Dam Height |
51 |
River Or Stream |
SINGERS GAP RUN |
Primary Dam Type |
Concrete |
Surface Area |
10 |
Drainage Area |
3.29 |
Nid Storage |
211 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
51 |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Susquehannock - Raystown Lake
|
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Seven Points
|
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Trough Creek State Park
|
Lake Mount Union
Mapleton Riverside Park Access