Big Four Ranch, located in Kern County, California, is a crucial water resource infrastructure owned by a Public Utility. Built in 1970, this Earth dam stands at 38 feet tall and spans 1200 feet in length, providing a storage capacity of 312 acre-feet for irrigation and water supply purposes. The dam is regulated and inspected by the California Department of Water Resources (DWR) and Safety of Dams, ensuring its structural integrity and safety.

With a significant hazard potential but a satisfactory condition assessment as of 2017, Big Four Ranch dam plays a vital role in managing water resources in the region. The dam is situated on an unnamed river or stream in the Sacramento District, serving the local community of Jasmin and surrounding areas. In case of emergencies, the dam has established emergency action plans to mitigate any risks and ensure the safety of downstream residents.

Water resource and climate enthusiasts can appreciate the strategic location and design of the Big Four Ranch dam, which not only provides essential water supply for agriculture but also contributes to the overall water management efforts in California. With regular inspections and regulatory oversight, this dam stands as a reliable infrastructure supporting the region's irrigation needs and safeguarding against potential hazards.