Jack's Holding On Hill Pond 5 Dam Reservoir Report

Last Updated: December 6, 2025

Jack's Holding On Hill Pond 5 Dam, located in Dutchess, New York, is a privately owned structure primarily used for irrigation purposes.


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Summary

Completed in 2016, this earth dam stands at a height of 20 feet and spans a length of 1600 feet, with a storage capacity of 116.8 acre-feet. It is regulated by the New York State Department of Environmental Conservation, with state inspections and enforcement in place to ensure its safety and compliance with regulations.

Despite being classified as having a low hazard potential and being in a moderate risk category, the dam's condition is currently not rated. It has a spillway type of uncontrolled and a maximum discharge capacity of 470.2 cubic feet per second. While no emergency action plan is recorded, the dam has not had any reported modifications or incidents since its completion. In the event of an emergency, the dam's location near an unnamed tributary to River Brook highlights the importance of proper risk management and mitigation measures for water resource and climate enthusiasts to consider.

Year Completed

2016

Dam Length

1600

Dam Height

20

River Or Stream

UNNAMED TRIBUTARY TO RIVER BROOK

Primary Dam Type

Earth

Surface Area

7.8

Drainage Area

0.17

Nid Storage

116.8

Hazard Potential

Low

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.