Diemer No. 8 is a significant dam located in Yorba Linda, California, with a primary purpose of water supply. Completed in 1968, this offstream dam stands at an impressive height of 172 feet and has a storage capacity of 18 acre-feet. Managed by a public utility, Diemer No. 8 is regulated by the California Department of Water Resources (DWR) for safety compliance and undergoes regular inspections to ensure its satisfactory condition.

This dam plays a crucial role in providing water to the surrounding area, with a drainage area of 0.01 square miles. Despite its significant hazard potential, the condition assessment of Diemer No. 8 remains satisfactory, with the last inspection conducted in August 2020. The dam's emergency action plan (EAP) was last revised in January 2018, ensuring that appropriate measures are in place in case of an emergency. With its impressive structure and essential function in water resource management, Diemer No. 8 stands as a testament to California's commitment to ensuring a reliable water supply for its residents.