Kelley And Greiner Reservoir Report

Last Updated: December 5, 2025

Kelley and Greiner, located in Alturas, California, is a privately owned earth dam that was completed in 1923 for the primary purpose of water supply.


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Summary

Situated on the Tr Pit River, this dam stands at a height of 11 feet with a hydraulic height of 7.9 feet. With a storage capacity of 71 acre-feet and a drainage area of 4.1 square miles, Kelley and Greiner plays a crucial role in providing irrigation and water supply to the surrounding areas.

Managed by the Natural Resources Conservation Service, Kelley and Greiner has been deemed to have a low hazard potential and has a satisfactory condition assessment as of September 2017. The dam undergoes regular inspections and meets state regulatory requirements for permitting, inspection, and enforcement. In case of emergencies, the dam has emergency action plans in place, ensuring the safety and security of the surrounding community.

Overall, Kelley and Greiner serves as a vital water resource infrastructure in Modoc County, California, contributing to the efficient management and distribution of water for agricultural and domestic purposes. Its historical significance, combined with its functionality and adherence to safety standards, positions it as a key player in water resource management and climate resilience efforts in the region.

Year Completed

1923

Dam Length

580

Dam Height

11

River Or Stream

Tr Pit River

Primary Dam Type

Earth

Surface Area

36

Hydraulic Height

7.9

Drainage Area

4.1

Nid Storage

71

Hazard Potential

Low

Nid Height

11
       
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.