Spring Lake Dam Reservoir Report

Last Updated: December 6, 2025

Spring Lake Dam, also known as Croaker Lake, is a masonry dam located in East White Plains, New York.


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Summary

Completed in 1895, the dam serves primarily for recreational purposes, with a height of 20 feet and a length of 250 feet. It is situated on the TR-Mamaroneck River and has a storage capacity of 20 acre-feet, providing a surface area of 3 acres for recreational activities.

Despite its historical significance, Spring Lake Dam is facing significant challenges in terms of its condition and hazard potential. A recent assessment categorized its condition as poor, with a significant hazard potential. The last inspection in June 2019 revealed the need for maintenance and improvements to ensure the safety and functionality of the dam. The risk assessment also indicates a moderate risk level, prompting the need for proactive risk management measures.

With its picturesque setting and recreational value, Spring Lake Dam presents an opportunity for stakeholders and regulators to collaborate on enhancing its safety and longevity. The dam is under state jurisdiction and regulation, with the NYS DEC overseeing permitting, inspection, and enforcement. By addressing the dam's current condition and hazard potential, stakeholders can ensure the continued enjoyment of Spring Lake for water resource and climate enthusiasts while safeguarding against potential risks associated with aging infrastructure.

Year Completed

1895

Dam Length

250

Dam Height

20

River Or Stream

TR-MAMARONECK RIVER

Primary Dam Type

Masonry

Surface Area

3

Nid Storage

20

Hazard Potential

Significant

Nid Height

20
       
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.