Lower Earlville Reservoir Dam Reservoir Report
Last Updated: December 6, 2025
Lower Earlville Reservoir Dam, located in Earlville, New York, is a privately owned structure regulated by the New York State Department of Environmental Conservation.
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Summary
The dam stands at a height of 25 feet and spans a length of 300 feet, with a normal storage capacity of 20 acre-feet and a maximum storage of 35 acre-feet. The primary purpose of the dam is for recreation, serving as a scenic reservoir on the TR-SANGERFIELD RIVER with a surface area of 3 acres for outdoor enthusiasts to enjoy.
Although the dam has a significant hazard potential, it is currently in a condition that has not been rated. Regular inspections, with a frequency of 4 times a year, are conducted to ensure the safety and reliability of the structure. In case of emergencies, an Emergency Action Plan (EAP) is in place, last revised in October 2019. Despite the moderate risk assessment, the dam continues to provide recreational opportunities while being mindful of potential risks and management measures to mitigate any dangers.
Overall, Lower Earlville Reservoir Dam presents a picturesque setting for water resource and climate enthusiasts to appreciate the beauty of nature while being aware of the importance of dam safety and risk management. With its controlled spillway and regulated state jurisdiction, the dam serves as a vital recreational resource within the community, offering both leisure and potential challenges that highlight the importance of responsible stewardship and maintenance of water infrastructure in the face of changing environmental conditions.
Dam Length |
300 |
Dam Height |
25 |
River Or Stream |
TR-SANGERFIELD RIVER |
Primary Dam Type |
Earth |
Surface Area |
3 |
Drainage Area |
1 |
Nid Storage |
35 |
Hazard Potential |
Significant |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Chenango River At Sherburne Ny
|
286cfs |
Otselic River At Cincinnatus Ny
|
148cfs |
Oneida Creek At Oneida Ny
|
126cfs |
Chittenango Creek Near Chittenango Ny
|
84cfs |
Unadilla River At Rockdale Ny
|
494cfs |
Steele Cr At Ilion Ny
|
27cfs |
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.
Lower Earlville Reservoir Dam
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