Whiting Hollow Dam Reservoir Report

Last Updated: December 6, 2025

Whiting Hollow Dam, located in North Blenheim, New York, is a privately owned structure primarily used for recreation purposes.


°F

°F

mph

Wind

%

Humidity

Summary

Completed in 1971, this earth dam stands at a height of 24 feet and spans a length of 1100 feet, providing a storage capacity of 480 acre-feet. The dam overlooks the TR-Mine Kill river and has a surface area of 37 acres, with a drainage area of 0.94 square miles.

With a significant hazard potential and a moderate risk assessment rating of 3, Whiting Hollow Dam falls under state regulation by the New York State Department of Environmental Conservation (NYS DEC). The dam features an uncontrolled spillway with a width of 200 feet, capable of discharging up to 11,100 cubic feet per second. Despite not being rated for its condition assessment, the dam has a regular inspection frequency of 4 times a year, with the last inspection conducted in September 2019.

Water resource and climate enthusiasts will be intrigued by the engineering and environmental considerations surrounding Whiting Hollow Dam. As a key feature in the local landscape, the dam poses both recreational opportunities and potential risks that highlight the importance of ongoing maintenance and monitoring. Its location within the Schoharie County, New York, offers a unique vantage point for studying the intersection of human infrastructure with natural water systems, making it a site of interest for those passionate about sustainability and resilience in the face of changing climate conditions.

Year Completed

1971

Dam Length

1100

Dam Height

24

River Or Stream

TR-MINE KILL

Primary Dam Type

Earth

Surface Area

37

Drainage Area

0.94

Nid Storage

480

Hazard Potential

Significant

Nid Height

24
       
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.