Big Elk Lake Reservoir Report
Nearby: Indian Lake Thomas Creek (Rc & D-105)
Last Updated: December 7, 2025
Big Elk Lake is a picturesque private water resource nestled in Susquehanna, Pennsylvania, boasting a rich history dating back to its completion in 1860.
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Summary
Managed by the Natural Resources Conservation Service, this Earth dam structure stands at a height of 12 feet and offers a storage capacity of 740 acre-feet, primarily serving recreational and water supply purposes. With a surface area of 79 acres and a drainage area of 2.88 square miles, the dam provides essential support to the Elk Lake Stream and surrounding ecosystem.
Despite its age, Big Elk Lake remains in fair condition, with a significant hazard potential that necessitates regular inspections for public safety. The dam underwent structural modifications in 2006 to enhance its resilience and ensure its continued functionality. Situated in Dimock Township and owned privately, the lake offers a recreational haven for water and climate enthusiasts, attracting visitors seeking a serene escape and a glimpse into Pennsylvania's natural beauty. With a fair condition assessment and a storage capacity of 500 acre-feet, Big Elk Lake stands as a vital water resource in Susquehanna County.
Years Modified |
2006 - Structural |
Year Completed |
1860 |
Dam Length |
76 |
Dam Height |
12 |
River Or Stream |
ELK LAKE STREAM |
Primary Dam Type |
Earth |
Surface Area |
79 |
Drainage Area |
2.88 |
Nid Storage |
740 |
Hazard Potential |
Significant |
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.
Big Elk Lake