Stuart Klahn Dam Reservoir Report
Last Updated: December 6, 2025
Stuart Klahn Dam, also known as Klahn Marsh, is a private dam located in Cattaraugus, New York.
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Summary
Completed in 1952, this Earth-type structure stands at a height of 14 feet and stretches 820 feet in length. It serves as a crucial water resource management system for the TR-EAST OTTO CREEK, with a storage capacity of 70 acre-feet and a drainage area of 0.18 square miles.
Managed by the New York State Department of Environmental Conservation (NYS DEC), Stuart Klahn Dam is regulated, inspected, and enforced by state authorities to ensure its safety and functionality. Despite being classified as having a low hazard potential, the dam is considered to have a moderate risk level. The spillway, with a width of 40 feet, is uncontrolled, and the maximum discharge capacity is 299 cubic feet per second.
For water resource and climate enthusiasts, Stuart Klahn Dam offers a fascinating glimpse into the intricate network of dams and reservoirs that play a crucial role in managing water flow and storage. Its presence highlights the importance of proactive monitoring and maintenance to mitigate risks and ensure the continued safety and efficiency of such vital infrastructure in the face of changing environmental conditions.
Year Completed |
1952 |
Dam Length |
820 |
Dam Height |
14 |
River Or Stream |
TR-EAST OTTO CREEK |
Primary Dam Type |
Earth |
Surface Area |
20 |
Drainage Area |
0.18 |
Nid Storage |
70 |
Hazard Potential |
Low |
Nid Height |
14 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cattaraugus Creek At Gowanda Ny
|
490cfs |
Allegheny River At Salamanca Ny
|
1540cfs |
Chadakoin River At Falconer Ny
|
64cfs |
Cazenovia Creek At Ebenezer Ny
|
102cfs |
Allegheny River At Eldred
|
473cfs |
Buffalo Creek At Gardenville Ny
|
417cfs |
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.
Stuart Klahn Dam