Walton Lake Dam Reservoir Report

Last Updated: December 6, 2025

Walton Lake Dam, located in Walton Park, New York, is a significant earth dam completed in 1912 for the primary purpose of recreation, with additional functions for water supply.


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Summary

Managed by the local government, this dam stands at a height of 8 feet and spans 135 feet in length, with a storage capacity of 2,900 acre-feet and a surface area of 117 acres. The dam regulates the water flow of the Walton Lake Outlet, contributing to the drainage area of 0.9 square miles.

Despite its satisfactory condition assessment as of September 2017, the dam poses a significant hazard potential and is subject to regular inspections every four years by the New York State Department of Environmental Conservation. With a spillway type of "Uncontrolled" and a spillway width of 5 feet, Walton Lake Dam is equipped to handle moderate risk levels, as indicated by the risk assessment rating of 3. This dam serves as a vital infrastructure for both recreation and water supply in the region, showcasing the intersection of environmental conservation and community safety.

Year Completed

1912

Dam Length

135

Dam Height

8

River Or Stream

WALTON LAKE OUTLET

Primary Dam Type

Earth

Surface Area

117

Drainage Area

0.9

Nid Storage

2900

Hazard Potential

Significant

Nid Height

8
       
Seasonal Comparison

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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.