Twin Tanks, located in Pima County, Arizona, is a privately owned water resource that serves multiple purposes, including fire protection, stock, and small fish pond maintenance. The dam itself is an earth structure with a height of 24.3 feet and a length of 792 feet, providing a storage capacity of 68.9 acre-feet. The spillway is uncontrolled with a width of 31 feet, and the hazard potential of the dam is rated as low.

Managed by the Arizona Department of Water Resources, Twin Tanks is regulated, permitted, inspected, and enforced by the state. With its location in the Los Angeles District, the dam's primary purpose is categorized as "Other," reflecting its versatility in serving various water-related needs. Although the condition assessment is currently listed as "Not Rated," the risk assessment is moderate, indicating the importance of monitoring and maintaining this vital water resource in the region.

Water resource and climate enthusiasts interested in Twin Tanks will appreciate its strategic location in Tucson and its contribution to water management in the area. With a surface area of 8.5 acres and a drainage area that is not specified, this reservoir plays a crucial role in water storage and distribution for both private and state-owned entities. Overall, Twin Tanks stands as a testament to responsible water resource management in Arizona, showcasing the collaboration between private and public entities to ensure sustainable water usage and conservation in the region.