Christie Brook Dike Reservoir Report

Last Updated: December 6, 2025

Christie Brook Dike, also known as Lake Wanoksink, is a state-owned earth dam located in Sloatsburg, Rockland County, New York.


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Summary

Built in 1934, this dam serves primarily for recreational purposes and has a height of 25 feet and a length of 120 feet. With a storage capacity of 380 acre-feet, it provides a surface area of 38 acres and has a drainage area of 0.9 square miles. Despite being rated as having a low hazard potential, its risk assessment is considered high.

Managed by the New York State Department of Environmental Conservation, Christie Brook Dike is regulated, permitted, inspected, and enforced by the state agency. Although it has not been rated in terms of condition assessment, the dam has not undergone any modifications in recent years. With no spillway present, this dam relies on the natural flow of Pine Meadow Brook as its outlet. Additionally, the dam does not have an Emergency Action Plan prepared or updated, indicating potential gaps in emergency response measures for the area.

Overall, Christie Brook Dike provides a valuable recreational resource in the region, while also posing a potential risk due to its high-risk assessment rating. As a state-regulated structure, it is important to monitor and address any maintenance or safety concerns to ensure the continued safety and functionality of the dam for both recreational enjoyment and water resource management in the area.

Year Completed

1934

Dam Length

120

Dam Height

25

River Or Stream

PINE MEADOW BROOK

Primary Dam Type

Earth

Surface Area

38

Drainage Area

0.9

Nid Storage

380

Hazard Potential

Low

Nid Height

25
       
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.