Genegantslet Lake Dam Reservoir Report

Last Updated: December 6, 2025

Genegantslet Lake Dam, located in McDonough, New York, was completed in 1900 and serves as a recreational spot for water enthusiasts.


°F

°F

mph

Wind

%

Humidity

Summary

The dam, primarily made of stone, stands at a height of 10 feet and stretches 300 feet in length across the Genegantslet Creek. With a storage capacity of 1064 acre-feet and a surface area of 112 acres, the dam provides a picturesque backdrop for outdoor activities.

Despite its scenic beauty, Genegantslet Lake Dam poses a high hazard potential due to its poor condition assessment as of June 2017. The dam's spillway, an uncontrolled type with a width of 300 feet, has a maximum discharge capacity of 5450 cubic feet per second. Although the dam is state-regulated and inspected regularly by the NYS DEC, the risk assessment remains at a moderate level (3), prompting the need for ongoing risk management measures.

Efforts to ensure the safety of Genegantslet Lake Dam include a biennial inspection frequency and the establishment of emergency action plans. While the dam's risk level is deemed moderate, its condition assessment and hazard potential underscore the importance of proactive maintenance and monitoring. As a vital water resource in Chenango County, Genegantslet Lake Dam serves as a reminder of the delicate balance between recreation and environmental safety in the face of changing climate conditions.

Year Completed

1900

Dam Length

300

Dam Height

10

River Or Stream

TR-GENEGANTSLET CREEK

Primary Dam Type

Stone

Surface Area

112

Drainage Area

5.07

Nid Storage

1064

Hazard Potential

High

Nid Height

10
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.