Welmet Lake Dam Reservoir Report

Last Updated: December 7, 2025

Located in Yulan, Sullivan County, New York, Welmet Lake Dam stands as a testament to engineering excellence since its completion in 1900.


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Summary

This private-owned dam serves primarily for recreational purposes, offering a serene 32-acre lake for visitors to enjoy. With a dam height of 13 feet and a length of 351 feet, Welmet Lake Dam provides a maximum storage capacity of 170 acre-feet, making it an essential water resource in the region.

Managed by the New York State Department of Environmental Conservation, Welmet Lake Dam is a low-hazard structure with a moderate risk assessment rating. Despite not being rated for its condition, the dam is regularly inspected and meets state regulatory standards for safety and maintenance. Surrounded by the picturesque Beaver Brook and nestled within the stunning landscape of Sullivan County, Welmet Lake Dam is not only a vital water resource but also a popular destination for outdoor enthusiasts and nature lovers alike.

With its uncontrolled spillway and earth dam type, Welmet Lake Dam serves as a crucial infrastructure for the surrounding community. The dam's strategic location and primary focus on recreation make it a significant landmark in the area. As climate change continues to impact water resources, the careful management and upkeep of structures like Welmet Lake Dam are essential to ensure the safety and sustainability of our water supply for generations to come.

Year Completed

1900

Dam Length

351

Dam Height

13

River Or Stream

BEAVER BROOK

Primary Dam Type

Earth

Surface Area

32

Nid Storage

170

Hazard Potential

Low

Nid Height

13
       
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.