Rotary Lake Dam Reservoir Report
Last Updated: December 6, 2025
Rotary Lake Dam, located in Sanduskay, New York, is a private earth dam with a height of 26 feet and a length of 1185 feet.
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Summary
The dam's primary purpose is for recreation, with a normal storage capacity of 42 acre-feet and a maximum storage of 59 acre-feet. The dam overlooks TR-Crystal Lake and serves as a popular spot for water resource and climate enthusiasts to enjoy outdoor activities such as fishing, boating, and picnicking.
Managed by the New York State Department of Environmental Conservation (NYS DEC), Rotary Lake Dam is regulated, permitted, inspected, and enforced by the state. The dam has an uncontrolled spillway with a width of 28 feet and a maximum discharge of 90 cubic feet per second. The hazard potential of the dam is considered significant, with a moderate risk assessment rating. The dam has not been rated for its overall condition, but emergency action preparedness measures have been put in place, including the development of an Emergency Action Plan.
With its picturesque location and recreational amenities, Rotary Lake Dam offers a tranquil setting for outdoor enthusiasts to appreciate the beauty of nature while also being mindful of the dam's structural integrity and potential risks. The dam's significance in water resource management and its contribution to local climate conditions make it a valuable asset for the community and a focal point for those interested in the intersection of water resources and climate change adaptation.
Dam Length |
1185 |
Dam Height |
26 |
River Or Stream |
TR-CRYSTAL LAKE |
Primary Dam Type |
Earth |
Surface Area |
4 |
Drainage Area |
0.06 |
Nid Storage |
59 |
Hazard Potential |
Significant |
Nid Height |
26 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Genesee River At Portageville Ny
|
542cfs |
Oatka Creek At Warsaw Ny
|
27cfs |
Allegheny River At Salamanca Ny
|
1540cfs |
Tonawanda Creek At Attica Ny
|
61cfs |
Cattaraugus Creek At Gowanda Ny
|
490cfs |
Genesee River At Wellsville Ny
|
136cfs |
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.
Rotary Lake Dam