Geiger Dam Reservoir Report

Last Updated: December 6, 2025

Geiger Dam, located in Downsville, New York, is a privately owned structure with a primary purpose of recreation.


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Summary

Completed in 2009, this earth dam stands at a height of 10 feet and has a length of 180 feet, providing storage capacity of 55 acre-feet. The dam is situated on the Trib- Temper Kill river and is regulated by the New York State Department of Environmental Conservation.

With a low hazard potential and a moderate risk assessment rating, Geiger Dam serves as a crucial water resource for the surrounding area. Its uncontrolled spillway with a width of 28 feet allows for a maximum discharge of 225 cubic feet per second. The dam's normal storage capacity of 40 acre-feet ensures a stable water supply for recreational activities and environmental conservation efforts in the region.

Water resource and climate enthusiasts can appreciate the strategic location and design of Geiger Dam, which contributes to the overall water management and conservation efforts in Delaware County, New York. With state-regulated inspections and enforcement in place, this dam provides both recreational enjoyment and essential water storage capabilities while maintaining a moderate risk level for potential hazards.

Year Completed

2009

Dam Length

180

Dam Height

10

River Or Stream

Trib- Temper Kill

Primary Dam Type

Earth

Surface Area

13

Drainage Area

0.2

Nid Storage

55

Hazard Potential

Low

Nid Height

10
       
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.