Mcmicken, located in Maricopa County, Arizona, is a vital flood risk reduction structure along the Trilby Wash. Built in 1956, this earth dam stands at a height of 34.5 feet and spans 46,200 feet in length, with a storage capacity of 23,800 acre-feet. The dam plays a crucial role in protecting the surrounding area from potential flooding, with a maximum discharge capability of 126,000 cubic feet per second.

Managed by the Arizona Department of Water Resources, Mcmicken is subject to state regulation, permitting, inspection, and enforcement to ensure its structural integrity and operational effectiveness. Despite being classified as having a high hazard potential, the dam's condition assessment in 2018 rated it as fair. Regular inspections are conducted, with the last one taking place in February 2021, to monitor the dam's condition and address any maintenance needs.

With a moderate risk assessment rating, Mcmicken serves as a key component in mitigating flood risks in the region. Its strategic location and design make it a critical infrastructure for water resource management and climate resilience efforts in Surprise, Arizona. As water resource and climate enthusiasts, understanding the importance of structures like Mcmicken is essential in safeguarding communities and ecosystems from potential water-related hazards.