John Micha Dam Reservoir Report

Last Updated: December 6, 2025

John Micha Dam, located in Lower Genegantslet, Chenango, New York, is a privately owned dam regulated by the NYS DEC.


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Summary

The dam, primarily used for purposes other than flood control or water supply, stands at a height of 18 feet and has a length of 620 feet. It has a maximum storage capacity of 100 acre-feet and a normal storage capacity of 64 acre-feet, serving a drainage area of 0.21 square miles along TR-INDIAN BROOK.

Despite being classified as low hazard potential with a moderate risk assessment, the dam's condition assessment is currently not rated, with its last inspection dating back to October 1996. The spillway type is uncontrolled with a width of 25 feet, and the dam poses a moderate risk (3) according to the risk assessment. The emergency action plan status, inundation maps, and risk management measures are not readily available, highlighting potential areas for improvement in dam safety and preparedness.

For water resource and climate enthusiasts, John Micha Dam presents an interesting case study in dam management and safety regulations. With its unique characteristics and location in a scenic area of New York, the dam serves as a reminder of the importance of regular inspections, maintenance, and emergency preparedness for ensuring the safety of both the structure and surrounding communities. As efforts continue to mitigate risks and enhance safety measures, this dam serves as a valuable asset for understanding the complexities of managing water resources in a changing climate.

Dam Length

620

Dam Height

18

River Or Stream

TR-INDIAN BROOK

Primary Dam Type

Earth

Surface Area

11

Drainage Area

0.21

Nid Storage

100

Hazard Potential

Low

Nid Height

18
       
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.
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Area Campgrounds