Conewango Creek Site 9a Dam Reservoir Report
Last Updated: December 7, 2025
Conewango Creek Site 9a Dam, also known as Villenova Dam, is a local government-owned structure located in Wrights Corners, Chautauqua, New York.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1972 by the USDA NRCS, this Earth-type dam stands at a height of 43 feet and spans 1590 feet along the TR-CONEWANGO CREEK. Its primary purpose is flood risk reduction, with a normal storage capacity of 41 acre-feet and a maximum storage of 964 acre-feet.
Managed by the NYS DEC, this dam has a hazard potential rated as high and a moderate risk assessment score of 3. Despite not being condition-rated, it undergoes inspections every two years, with the last one conducted in November 2020. The spillway width of 200 feet allows for a maximum discharge of 8200 cubic feet per second, ensuring effective flood control measures in the area.
With its crucial role in mitigating flood risks along Conewango Creek, Site 9a Dam serves as a vital infrastructure asset in safeguarding the surrounding community against potential water-related disasters. As water resource and climate enthusiasts, understanding the dynamics of this dam's design, purpose, and operational capacity sheds light on the importance of sustainable water management practices in maintaining a resilient environment.
Year Completed |
1972 |
Dam Length |
1590 |
Dam Height |
43 |
River Or Stream |
TR-CONEWANGO CREEK |
Primary Dam Type |
Earth |
Surface Area |
9 |
Drainage Area |
6 |
Nid Storage |
964 |
Hazard Potential |
High |
Nid Height |
43 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cattaraugus Creek At Gowanda Ny
|
549cfs |
Chadakoin River At Falconer Ny
|
64cfs |
Allegheny River At Salamanca Ny
|
1620cfs |
Conewango Creek At Russell
|
866cfs |
Cazenovia Creek At Ebenezer Ny
|
102cfs |
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.
Conewango Creek Site 9a Dam