Upper Candor Dam Reservoir Report

Last Updated: December 8, 2025

Upper Candor Dam, located in Candor, New York, is a concrete structure built in 1920 on Catatonk Creek.


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Summary

Owned by the local government, the dam serves a primary purpose of "Other" and has a low hazard potential. The dam stands at 7 feet high with a length of 280 feet, providing a storage capacity of 55 acre-feet and covering a surface area of 11 acres.

Managed by the New York State Department of Environmental Conservation, Upper Candor Dam is regularly inspected and maintained to ensure its structural integrity. The dam features an uncontrolled spillway with a width of 280 feet, allowing for the controlled release of excess water. Despite being classified as having a moderate risk level, the dam's condition assessment as of August 2019 was deemed satisfactory, indicating that it is in good operational condition.

Water resource and climate enthusiasts can appreciate the role of Upper Candor Dam in managing water levels and mitigating potential flood risks in the region. With its historical significance and ongoing regulatory oversight, the dam continues to play a crucial role in safeguarding the surrounding community and environment from water-related hazards.

Year Completed

1920

Dam Length

280

Dam Height

7

River Or Stream

CATATONK CREEK

Primary Dam Type

Concrete

Surface Area

11

Drainage Area

121.6

Nid Storage

55

Hazard Potential

Low

Nid Height

7
       
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.