Clearwell Reservoir, located in Tucson, Arizona, is a vital water supply reservoir owned by the local government and regulated by the Arizona Department of Water Resources. Completed in 1992, this Earth dam stands at 77 feet tall and stretches 500 feet in length, with a storage capacity of 178 acre-feet. The reservoir is situated on an unnamed wash, serving as a critical source of water for the region's needs.

With a surface area of 7 acres and a drainage area of 0.04 square miles, Clearwell Reservoir has a spillway width of 110 feet and a high hazard potential due to its proximity to populated areas. Despite this, the dam is currently in satisfactory condition, as assessed in January 2018. The reservoir's emergency action plan and risk management measures are essential to ensuring public safety and efficient water supply management in the face of potential emergencies.

In the care of the local government and subject to regular inspections, Clearwell Reservoir symbolizes the intersection of water resource management and climate resilience in Arizona. Its strategic location and purpose highlight the importance of sustainable water supply infrastructure in arid regions, where every drop counts in the face of changing climate patterns.