Preston dam, located in Amador County, California, is a vital structure managed by the public utility for water supply purposes. Built in 1949, this earth dam stands at a height of 40 feet and has a storage capacity of 268 acre-feet on Tr Mule Creek. With a high hazard potential, the dam is under the regulatory oversight of the Department of Water Resources and Safety of Dams.

Despite its satisfactory condition assessment as of September 2017, regular inspections are conducted to ensure its structural integrity and safety. The dam plays a crucial role in flood risk reduction, irrigation, and water supply for the surrounding areas. Managed by the Natural Resources Conservation Service, Preston dam is a significant component in the water resource infrastructure of the region, contributing to the overall water management efforts in California.

With its strategic location and operational efficiency, Preston dam serves as a testament to effective water resource management in the face of changing climate patterns. As climate enthusiasts and water resource specialists continue to monitor and analyze the impact of climate change on water availability and infrastructure, structures like Preston dam play a pivotal role in ensuring water security for the community amidst evolving environmental challenges.