Chenango 1 Wildlife Marsh Dam Reservoir Report
Nearby: Bowman Creek Dam Steer Pond Dam
Last Updated: December 6, 2025
Chenango 1 Wildlife Marsh Dam, located in East Mc Donough, Chenango County, New York, is a state-owned earth dam constructed in 1957 for recreational purposes.
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Summary
The dam stands at 9 feet high and stretches 610 feet in length, creating a storage capacity of 132 acre-feet for the nearby TR-BOWMAN CREEK. With a surface area of 41 acres and a drainage area of 0.54 square miles, the dam is regulated and inspected by the New York State Department of Environmental Conservation.
Despite its low hazard potential and current "Not Rated" condition assessment, the dam poses a moderate risk (rated 3 out of 5) according to the available data. While an emergency action plan (EAP) and inundation maps are not currently in place, the dam's spillway type is uncontrolled with a width of 46 feet, allowing for a maximum discharge of 219 cubic feet per second. The last inspection of Chenango 1 Wildlife Marsh Dam was conducted in November 2012, and the dam is noted to have moderate risk management measures in place.
For water resource and climate enthusiasts, Chenango 1 Wildlife Marsh Dam serves as a vital structure for recreational activities in the area while also raising awareness about the importance of proper dam maintenance and risk mitigation strategies. As a state-regulated facility with a history dating back to the mid-20th century, this dam presents an opportunity for ongoing monitoring and evaluation to ensure the safety of both the community and the environment it serves. By staying informed and engaged with the data and regulations surrounding Chenango 1 Wildlife Marsh Dam, enthusiasts can contribute to the preservation of this valuable water resource for future generations.
Year Completed |
1957 |
Dam Length |
610 |
Dam Height |
9 |
River Or Stream |
TR-BOWMAN CREEK |
Primary Dam Type |
Earth |
Surface Area |
41 |
Drainage Area |
0.54 |
Nid Storage |
132 |
Hazard Potential |
Low |
Nid Height |
9 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Otselic River At Cincinnatus Ny
|
148cfs |
Chenango River At Greene Ny
|
676cfs |
Chenango River At Sherburne Ny
|
286cfs |
Unadilla River At Rockdale Ny
|
494cfs |
Susquehanna River At Bainbridge Ny
|
1640cfs |
Chenango River Near Chenango Forks Ny
|
1760cfs |
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.
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