Cactus Basin #3, located in San Bernardino, California, is a crucial water resource infrastructure managed by the local government for flood risk reduction along the Rialto Channel. This earth dam, completed in 2017, stands at a height of 37.5 feet and has a storage capacity of 528.4 acre-feet, serving multiple purposes including water supply and flood risk reduction. The dam has a hydraulic height of 29.5 feet and a length of 4150 feet, with a surface area of 23.9 acres.

Despite its satisfactory condition assessment as of September 2017, Cactus Basin #3 poses a high hazard potential, emphasizing the importance of regular inspections and enforcement of safety measures. The dam falls under state jurisdiction and is regulated by the California Department of Water Resources (DWR) for safety compliance. With the last inspection conducted in December 2019 and an emergency action plan (EAP) last revised in February 2021, Cactus Basin #3 remains a significant asset in mitigating flood risks in the region, highlighting the critical role of water resource management in climate resilience efforts.