Lower Lake Metaugue Dam Reservoir Report

Last Updated: December 6, 2025

Lower Lake Metaugue Dam, located in Sullivan, New York, is a private dam primarily used for recreation.


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Summary

Built in 1960, this earth dam stands at a height of 10 feet and stretches 450 feet in length, providing a storage capacity of 88 acre-feet. The dam's purpose is to create a recreational reservoir along the TR-RIO Reservoir. Despite its low hazard potential, the dam is considered to have a high risk level due to its condition being "Not Rated," highlighting the need for a thorough assessment and potential risk management measures.

Managed by the New York State Department of Environmental Conservation, the Lower Lake Metaugue Dam is subject to state regulation, permitting, inspection, and enforcement. The dam does not have a spillway and is not associated with any federal agencies for ownership, funding, design, construction, or operations. It is crucial for water resource and climate enthusiasts to stay informed about the condition and risk level of this dam, as well as any potential emergency preparedness measures that may need to be implemented in the future.

With a surface area of 70 acres and a location near the Philadelphia District of the US Army Corps of Engineers, the Lower Lake Metaugue Dam offers a unique recreational experience for visitors. While the dam's risk assessment is deemed high, its actual risk management measures and emergency preparedness plans are currently unspecified. As enthusiasts of water resources and climate, it is important to monitor the dam's condition and any updates regarding its safety and maintenance to ensure the protection of both the environment and the community surrounding it.

Year Completed

1960

Dam Length

450

Dam Height

10

River Or Stream

TR-RIO RESERVOIR

Primary Dam Type

Earth

Surface Area

70

Nid Storage

88

Hazard Potential

Low

Nid Height

10
       
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.