Lake Lloyd Reservoir Report
Nearby: North Fork (Pa-406) Marsh Creek Dam
Last Updated: December 6, 2025
Lake Lloyd, located in Potter County, Pennsylvania, is a private water resource regulated by the Pennsylvania Department of Environmental Protection.
°F
°F
mph
Wind
%
Humidity
Summary
This earth dam structure, with a height of 10 feet and a storage capacity of 192 acre-feet, serves a primary purpose other than flood control or water supply. The dam, situated on Marsh Creek, has a surface area of 30 acres and a normal storage level of 129 acre-feet.
Despite its low hazard potential, Lake Lloyd has not been rated for its condition assessment, with the last inspection conducted in August 2015. The dam's emergency action plan status and risk management measures remain unclear, highlighting potential areas for improvement in terms of preparedness and safety protocols. Enthusiasts of water resources and climate may find Lake Lloyd's unique characteristics and regulatory oversight by the Pennsylvania Department of Environmental Protection intriguing for further study and conservation efforts.
Dam Height |
10 |
River Or Stream |
MARSH CREEK |
Primary Dam Type |
Earth |
Surface Area |
30 |
Drainage Area |
0.6 |
Nid Storage |
192 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cowanesque River At Westfield
|
20cfs |
Genesee River At Wellsville Ny
|
136cfs |
Straight Run
|
1cfs |
Cowanesque River At Elkland
|
104cfs |
Tuscarora Creek Above South Addison Ny
|
13cfs |
Canisteo River At West Cameron Ny
|
100cfs |
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.
Lake Lloyd