Delanson Reservoir Dam Reservoir Report
Last Updated: December 25, 2025
Delanson Reservoir Dam, located in Duanesburg, New York, serves as a crucial water supply source for the community.
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Summary
Constructed in 1915, this earth-type dam stands at a height of 30 feet and spans 500 feet in length. With a maximum storage capacity of 84 acre-feet and a normal storage capacity of 73 acre-feet, the reservoir covers a surface area of 7 acres and is regulated by the New York State Department of Environmental Conservation.
Despite being classified as having a low hazard potential, the dam's risk assessment is moderate. The spillway, which is uncontrolled and 28 feet wide, plays a vital role in managing water flow in case of excess storage. The dam is regularly inspected by the state regulatory agency, with the last inspection conducted in October 2015. This structure is not only essential for water supply purposes but also contributes to the overall sustainability and resilience of the region's water resources.
Delanson Reservoir Dam's historical significance and functional role in water management make it a focal point for water resource and climate enthusiasts. With its strategic location on the TR-Normans Kill river, this dam symbolizes the intersection of human ingenuity and environmental stewardship. As efforts are made to assess and mitigate potential risks associated with the dam, its importance in ensuring water security for the local community remains paramount.
Year Completed |
1915 |
Dam Length |
500 |
Dam Height |
30 |
River Or Stream |
TR-NORMANS KILL |
Primary Dam Type |
Earth |
Surface Area |
7 |
Nid Storage |
84 |
Hazard Potential |
Low |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Schoharie Creek At Burtonsville Ny
|
825cfs |
Schoharie Creek At Breakabeen Ny
|
216cfs |
Normans Kill At Albany Ny
|
190cfs |
Glowegee Creek At West Milton Ny
|
29cfs |
Canajoharie Creek Nr Canajoharie Ny
|
50cfs |
Mohawk River At Cohoes Ny
|
5070cfs |
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.
Delanson Reservoir Dam