Juncal, also known as Jameson Lake, is a significant public utility located in Santa Barbara, California, specifically in the city of Summerland. This dam serves multiple purposes, including flood risk reduction, irrigation, and water supply, showcasing its vital role in managing water resources in the region. Built in 1930, Juncal is an arch-type dam standing at a height of 160 feet with a hydraulic height of 154 feet, offering a storage capacity of 6140 acre-feet and covering a surface area of 138 acres.

With a high hazard potential but a satisfactory condition assessment as of September 2017, Juncal is regulated, permitted, inspected, and enforced by the California Department of Water Resources (DWR) under the Safety of Dams program. The dam is situated on the Santa Ynez River, providing critical flood protection for the surrounding areas and supporting agricultural activities through irrigation. Managed by a public utility entity, Juncal plays a crucial role in water management and climate resilience efforts in California.

Despite its age, Juncal continues to meet safety standards and undergo regular inspections, with the most recent one conducted in June 2020. With its strategic location and significant storage capacity, Juncal serves as a key infrastructure for flood control and water supply in Santa Barbara County. As water resource and climate enthusiasts, it is essential to recognize the importance of dams like Juncal in ensuring water security and mitigating the impacts of climate change on water availability in the region.