White Tanks #4 is a vital flood risk reduction structure located in Maricopa, Arizona, specifically in the city of Goodyear. Built in 1956 by the USDA NRCS, this earth dam stands at a height of 14 feet and has a structural height of 22 feet, with a total length of 6839 feet. It serves the primary purpose of flood risk reduction along the Gila River - TR, providing protection to the surrounding areas against potential water hazards.

With a storage capacity of 2250 acre-feet and a surface area of 155 acres, White Tanks #4 plays a crucial role in managing water levels and mitigating flood risks in the region. The dam is regulated by the Arizona Department of Water Resources, ensuring that it meets state inspection, enforcement, and permitting requirements. Despite being classified as having a high hazard potential, the structure is assessed to be in fair condition, with a moderate risk rating of 3.

The dam features a slide (sluice gate) outlet gate and an uncontrolled spillway type, reflecting its design for effective flood control. White Tanks #4 is a key component of the local government's flood risk mitigation strategy, safeguarding the community and infrastructure against potential water-related disasters. For water resource and climate enthusiasts, this structure stands as a testament to the importance of sustainable water management and infrastructure resilience in the face of changing environmental conditions.