Seneca, located in Oakland, California, is a crucial water supply dam managed by a public utility. Completed in 1950, this earth dam stands at 40 feet high and has a storage capacity of 92 acre-feet. With a primary purpose of water supply, Seneca plays a vital role in providing water to the surrounding area.

Managed by the Department of Water Resources and Safety of Dams, Seneca is regulated and inspected regularly to ensure its safety and functionality. The dam has a low hazard potential and has been assessed to be in satisfactory condition as of September 2017. With a last inspection date in October 2019, Seneca is continually monitored to meet safety standards and emergency preparedness guidelines.

Situated in Alameda County, Seneca is part of the Sacramento District and serves as an offstream reservoir. With its strategic location and vital role in water supply, Seneca is a significant structure contributing to water resource management in the region. For water resource and climate enthusiasts, Seneca's presence highlights the importance of sustainable water infrastructure and the need for continuous monitoring and maintenance to ensure a stable water supply in the face of changing climate conditions.