Cobleskill Upper Reservoir Dam Reservoir Report
Last Updated: December 22, 2025
The Cobleskill Upper Reservoir Dam, also known as Smith Reservoir, is a crucial water supply structure located in Mineral Springs, New York.
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Summary
Owned by the local government, this earth dam was completed in 1967 and stands at a height of 30 feet with a length of 2200 feet. It has a storage capacity of 353 acre-feet and serves the primary purpose of water supply for the surrounding area.
Managed by the New York State Department of Environmental Conservation, the dam is regulated, inspected, and enforced by state authorities to ensure its safety and functionality. The dam's spillway type is uncontrolled, with a width of 41 feet, allowing for a maximum discharge of 1585 cubic feet per second. Despite being classified as having a high hazard potential, the dam's condition assessment in 2019 was satisfactory, with a moderate risk level of 3.
Enthusiasts of water resources and climate will appreciate the critical role that the Cobleskill Upper Reservoir Dam plays in providing water supply to the region. Its design, construction, and maintenance are closely monitored to ensure the safety of the surrounding community and the efficient management of water resources in Schoharie County, New York.
Year Completed |
1967 |
Dam Length |
2200 |
Dam Height |
30 |
River Or Stream |
SMITH BROOK |
Primary Dam Type |
Earth |
Surface Area |
25 |
Drainage Area |
1.1 |
Nid Storage |
353 |
Hazard Potential |
High |
Nid Height |
30 |
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.
Cobleskill Upper Reservoir Dam