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. 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.