Kilmer Reservoir Report

Last Updated: December 5, 2025

Kilmer, located in Tuolumne, California, is a private dam with a primary purpose of water supply.


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Summary

Built in 1953, this earth dam stands at 31 feet high and spans 675 feet in length, holding a storage capacity of 99 acre-feet. Situated on Tr Dry Creek, Kilmer plays a crucial role in water resource management in the region.

Managed by the California state regulatory agency, Kilmer is subject to regular inspections, with its condition assessed as satisfactory during the last inspection in September 2017. With a low hazard potential, Kilmer poses minimal risk to its surrounding areas, ensuring the safety and security of the community in Cooperstown. Although lacking detailed risk assessment and emergency action plans, Kilmer continues to fulfill its role in providing essential water resources to the region.

Supported by Tom McClintock (R), Kilmer serves as a vital infrastructure for water supply in the area, contributing to the sustainability and resilience of the local environment. With its strategic location and operational efficiency, Kilmer stands as a testament to the importance of effective dam management in addressing the challenges of water resource management and climate change.

Year Completed

1953

Dam Length

675

Dam Height

31

River Or Stream

Tr Dry Creek

Primary Dam Type

Earth

Surface Area

23

Hydraulic Height

26

Drainage Area

0.6

Nid Storage

99

Hazard Potential

Low

Nid Height

31
       
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.