Hartwick Reservoir Dam Reservoir Report

Last Updated: December 6, 2025

Hartwick Reservoir Dam, located in Hartwick, New York, is a privately owned structure that serves primarily for recreational purposes.


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Summary

Completed in 1924, this Arch type dam stands at a height of 23 feet and has a length of 100 feet. It has a storage capacity of 213 acre-feet and a surface area of 20 acres, providing a picturesque setting for outdoor activities.

Despite its recreational benefits, the dam poses a significant hazard potential with a poor condition assessment as of February 2019. The dam's spillway is uncontrolled and has a width of 80 feet, with a maximum discharge capacity of 394 cubic feet per second. The inspection frequency is set at 4 times a year, reflecting the need for regular monitoring and maintenance to ensure public safety.

In the event of emergencies, the dam's Emergency Action Plan status, readiness, and risk management measures remain unspecified. With moderate risk associated with the dam, stakeholders and authorities need to prioritize necessary actions to address the dam's structural concerns and enhance its safety measures for the surrounding community and environment.

Year Completed

1924

Dam Length

100

Dam Height

23

River Or Stream

TR-OTEGO CREEK

Primary Dam Type

Arch

Surface Area

20

Drainage Area

0.5

Nid Storage

213

Hazard Potential

Significant

Nid Height

23
       
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.