Stoneridge (No. 19) is a vital flood risk reduction structure located in Maricopa County, Arizona. Completed in 1973, this earth dam stands at a height of 25 feet and has a capacity to store 163 acre-feet of water from the Colony Wash. The dam's primary purpose is flood risk reduction, with a spillway width of 100 feet to handle a maximum discharge of 6950 cubic feet per second.

Managed by the Arizona Department of Water Resources, Stoneridge (No. 19) is subject to regular state inspections and enforcement measures to ensure its structural integrity and safety. With a high hazard potential and a moderate risk assessment score of 3, the dam is considered to be in satisfactory condition as of the last assessment in February 2018. Despite its critical role in protecting Fountain Hills and surrounding areas from flooding, the dam's normal storage level is reported to be zero, indicating that it is currently not holding any water for non-emergency purposes.

Water resource and climate enthusiasts can appreciate the engineering feat behind Stoneridge (No. 19) as it continues to serve its essential function in mitigating flood risks in the region. With a strategic location at S22, T3N, R6E and a capacity to store water from the Colony Wash, this stone-core earth dam stands as a testament to effective water resource management in Arizona. Its high hazard potential underscores the importance of regular inspections and maintenance to ensure the safety of downstream communities in the face of potential flood events.