Gilboa Dam Reservoir Report
Last Updated: December 6, 2025
Gilboa Dam, also known as Schoharie Reservoir, is a concrete structure located in North Blenheim, New York, and serves as a crucial water supply facility.
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Summary
Completed in 1926, the dam stands at a height of 183 feet and has a length of 2,273 feet, with a maximum storage capacity of 95,575 acre-feet. The reservoir created by the dam covers a surface area of 1,159 acres and drains an area of 314 square miles, making it an essential source of water for the region.
Managed by the local government, Gilboa Dam is regulated by the New York State Department of Environmental Conservation (NYS DEC) and undergoes regular inspections to ensure its structural integrity. With a high hazard potential and a satisfactory condition assessment, the dam is equipped with an uncontrolled spillway that has a width of 1,324 feet to manage excess water flow. In case of emergencies, there are established guidelines and risk management measures in place to mitigate potential risks and ensure the safety of surrounding communities.
Gilboa Dam plays a vital role in water resource management in the area, providing a reliable water supply for various purposes. Its strategic location on the Schoharie Creek, combined with its capacity and infrastructure, highlights its significance in meeting the water needs of the region while also addressing potential climate-related challenges. As a key component of the local water supply system, Gilboa Dam stands as a testament to the importance of sustainable water resource management in the face of changing environmental conditions.
Year Completed |
1926 |
Dam Length |
2273 |
Dam Height |
183 |
River Or Stream |
SCHOHARIE CREEK |
Primary Dam Type |
Concrete |
Surface Area |
1159 |
Drainage Area |
314 |
Nid Storage |
95575 |
Hazard Potential |
High |
Nid Height |
183 |
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.
Gilboa Dam