Wanaksink Lake Dam Reservoir Report

Last Updated: December 6, 2025

Located in Glen Wild, Sullivan County, New York, Wanaksink Lake Dam, also known as Lords Reservoir, stands as a vital structure regulating the flow of Fowlwood Brook.


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Summary

Built in 1852, this private dam serves primarily for recreation purposes, encompassing a surface area of 325 acres and a maximum storage capacity of 6,360 acre-feet. With a height of 22 feet and a length of 420 feet, the earth dam features a controlled spillway with a width of 3 feet, ensuring optimal management of water discharge during peak periods.

Despite its historical significance and recreational value, Wanaksink Lake Dam poses a high hazard potential due to its location and design characteristics. However, recent inspections have deemed the dam's condition as satisfactory, with a risk assessment rating it as very high (1). As regulated by the New York State Department of Environmental Conservation, the dam undergoes regular inspections and enforcement measures to ensure public safety and environmental protection. Furthermore, emergency action plans are in place to address any potential risks and safeguard the surrounding community in case of a dam failure.

As climate change continues to impact water resources and infrastructure, Wanaksink Lake Dam plays a crucial role in mitigating flood risks and ensuring sustainable water management in the region. With its rich history, recreational opportunities, and critical function in regulating water flow, this dam stands as a significant asset in the overall conservation efforts of New York's water resources.

Year Completed

1852

Dam Length

420

Dam Height

22

River Or Stream

FOWLWOOD BROOK

Primary Dam Type

Earth

Surface Area

325

Drainage Area

2

Nid Storage

6360

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.