Betty Brook Dam Reservoir Report

Last Updated: December 6, 2025

Betty Brook Dam, located in South Kortright, New York, is a privately owned earth dam completed in 1972 primarily for recreational purposes.


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Summary

Standing at a height of 21 feet and spanning a length of 680 feet, this dam serves as a vital structure along the Betty Brook stream. With a storage capacity of 574 acre-feet and a maximum discharge rate of 2780 cubic feet per second, the dam also features an uncontrolled spillway with a width of 50 feet.

Despite being classified as having a low hazard potential and a moderate risk assessment rating, Betty Brook Dam has not been rated for condition assessment. The dam's last inspection was conducted in May 2015, with no specific inspection frequency documented. While the dam is regulated and permitted by the New York State Department of Environmental Conservation, there are no associated emergency action plans or inundation maps prepared for potential risk management measures. Overall, Betty Brook Dam stands as a noteworthy structure within the region, providing both recreational opportunities and essential water resource management in Delaware County, New York.

Year Completed

1972

Dam Length

680

Dam Height

21

River Or Stream

BETTY BROOK

Primary Dam Type

Earth

Surface Area

34

Drainage Area

1.22

Nid Storage

574

Hazard Potential

Low

Nid Height

21
       
Seasonal Comparison

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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.