East Mountain Lake Dam Reservoir Report

Last Updated: December 5, 2025

East Mountain Lake Dam, located in Brinckerhoff, New York, was completed in 1932 with a primary purpose of recreation, offering a picturesque setting for outdoor enthusiasts.


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Summary

This concrete dam stands at 7 feet high and spans 50 feet in length, providing a storage capacity of 78 acre-feet. The dam overlooks Trout Creek, adding to its charm and natural beauty.

Managed by a private owner, East Mountain Lake Dam is regulated by the New York State Department of Environmental Conservation, ensuring state-mandated inspections and enforcement measures are in place. With a low hazard potential and a very high risk assessment rating, the dam remains a critical structure for flood control and water resource management in the region. The controlled spillway system, with a width of 6 feet, enhances the dam's ability to manage water flow during periods of high discharge.

Despite its age, East Mountain Lake Dam continues to be a vital asset for the community, offering both recreational opportunities and essential water resource management capabilities. With a focus on safety and risk management, the dam stands as a testament to the importance of sustainable water infrastructure in the face of climate challenges.

Year Completed

1932

Dam Length

50

Dam Height

7

River Or Stream

TROUT CREEK

Primary Dam Type

Concrete

Surface Area

10.1

Drainage Area

0.25

Nid Storage

78

Hazard Potential

Low

Nid Height

7
       
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.