Nys Atomic Development Dam #2 Reservoir Report
Last Updated: December 6, 2025
Nys Atomic Development Dam #2, located in West Valley, New York, serves as a crucial water supply structure along the TR-BUTTERMILK CREEK.
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Summary
Constructed in 1963, this earth dam stands at 45 feet tall and spans 360 feet in length, with a storage capacity of 98 acre-feet. Despite being categorized as having a low hazard potential, the dam is subject to regular state inspections, permitting, and enforcement by the New York State Department of Environmental Conservation (NYS DEC).
With a maximum discharge capacity of 500 cubic feet per second, the dam features a controlled spillway with a width of 8 feet. The surrounding area boasts a surface area of 15 acres and a drainage area of 3.1 square miles. While the condition assessment of Nys Atomic Development Dam #2 remains unrated, the risk assessment indicates a very high risk level, emphasizing the importance of ongoing risk management measures to ensure the safety and integrity of the structure in the face of potential climatic challenges.
Owned and regulated by the state of New York, Nys Atomic Development Dam #2 plays a critical role in water resource management and supply within the region. As climate change continues to impact water availability and quality, the proper maintenance and monitoring of this dam are essential to safeguarding the surrounding community and ecosystem. The dam's strategic location and design underscore its significance in balancing water supply needs with environmental protection and public safety concerns.
Year Completed |
1963 |
Dam Length |
360 |
Dam Height |
45 |
River Or Stream |
TR-BUTTERMILK CREEK |
Primary Dam Type |
Earth |
Surface Area |
15 |
Drainage Area |
3.1 |
Nid Storage |
98 |
Hazard Potential |
Low |
Nid Height |
45 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cattaraugus Creek At Gowanda Ny
|
490cfs |
Allegheny River At Salamanca Ny
|
1540cfs |
Cazenovia Creek At Ebenezer Ny
|
102cfs |
Buffalo Creek At Gardenville Ny
|
417cfs |
Cayuga Creek Nr Lancaster Ny
|
27cfs |
Genesee River At Portageville Ny
|
542cfs |
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.
Nys Atomic Development Dam #2