Lake Lincolndale Dam Reservoir Report

Last Updated: December 5, 2025

Lake Lincolndale Dam in Lincolndale, New York, is a privately-owned earth dam completed in 1935 primarily for recreational purposes.


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Summary

The dam has a height of 22 feet and a length of 580 feet, creating a reservoir with a maximum storage capacity of 275 acre-feet. The dam regulates the flow of Plum Brook and has a spillway width of 25 feet, with a maximum discharge capacity of 430 cubic feet per second.

Despite its recreational function, the dam poses a high hazard potential and has been assessed as being in poor condition as of October 2017. The last inspection was conducted in November 2019, with a frequency of every 2 years. The risk assessment for the dam indicates a moderate risk level, with no specific risk management measures currently in place. The dam is regulated by the New York State Department of Environmental Conservation and is subject to state permitting, inspection, and enforcement.

For water resource and climate enthusiasts, Lake Lincolndale Dam serves as a critical infrastructure for water management and recreation in the region. Its potential hazards and poor condition highlight the importance of regular maintenance and monitoring to ensure public safety and environmental protection. The dam's historical significance and role in the local ecosystem make it a focal point for sustainable water resource management and climate resilience efforts in the area.

Year Completed

1935

Dam Length

580

Dam Height

22

River Or Stream

TR-PLUM BROOK

Primary Dam Type

Earth

Surface Area

22

Drainage Area

0.54

Nid Storage

275

Hazard Potential

High

Nid Height

22
       
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.