Upper Warwick Dam Reservoir Report

Last Updated: December 6, 2025

Upper Warwick Dam, also known as Warwick Reservoir #3, is a vital water supply structure located in Warwick, New York.


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Summary

Built in 1912, this earth dam stands at a height of 40 feet and stretches 525 feet in length, with a storage capacity of 80 acre-feet. The dam, situated on the TR-Wawayanda Creek, serves the primary purpose of providing water supply to the surrounding area.

Managed by the local government and regulated by the NYS DEC, Upper Warwick Dam has a low hazard potential and is currently assessed to be in fair condition. With a moderate risk level, the dam has not been modified in recent years and features an uncontrolled spillway with a width of 18 feet. The last inspection in October 2019 confirmed its operational integrity, showcasing its importance in ensuring water resource sustainability in the region.

For water resource and climate enthusiasts, Upper Warwick Dam stands as a testament to the importance of well-maintained infrastructure in safeguarding water supply. Its historical significance, coupled with its functional role in the local community, highlights the need for continued monitoring and risk management to ensure the resilience of this essential resource in the face of changing climate conditions.

Year Completed

1912

Dam Length

525

Dam Height

40

River Or Stream

TR-WAWAYANDA CREEK

Primary Dam Type

Earth

Surface Area

5.6

Drainage Area

1.3

Nid Storage

80

Hazard Potential

Low

Nid Height

40
       
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.