White Plains Reservoir #2 Dam Reservoir Report

Last Updated: December 6, 2025

White Plains Reservoir #2 Dam, located in White Plains, New York, is a crucial structure owned by the local government for water supply purposes.


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Summary

Completed in 1907, this earth dam stands at a height of 35 feet and stretches 465 feet in length, with a storage capacity of 192 acre-feet. Situated along the TR-BRONX RIVER, the dam boasts a controlled spillway type with a width of 13 feet and a maximum discharge of 340 cubic feet per second.

With a high hazard potential and a satisfactory condition assessment, White Plains Reservoir #2 Dam is subject to regular inspections and state regulation by the NYS DEC. Its risk assessment categorizes it as very high, emphasizing the importance of effective risk management measures. Despite its age, the dam continues to serve its primary purpose of providing water supply to the surrounding area, with a normal storage capacity of 77 acre-feet and a surface area of 30 acres.

As an essential component of the local water infrastructure, the White Plains Reservoir #2 Dam plays a vital role in ensuring a reliable water supply for the community. Its historical significance, coupled with its current operational efficiency and state-regulated status, make it a noteworthy structure for water resource and climate enthusiasts to appreciate and study in the context of sustainable water management practices.

Year Completed

1907

Dam Length

465

Dam Height

35

River Or Stream

TR-BRONX RIVER

Primary Dam Type

Earth

Surface Area

30

Drainage Area

0.66

Nid Storage

192

Hazard Potential

High

Nid Height

35
       
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.