Se Des Moines Stormwater Detention Dam #4 is a vital structure located in Polk County, Iowa, designed by Snyder & Associates to mitigate flood risks associated with the TR- YEADER CREEK. Completed in 1999, this earth dam stands at 26 feet tall and stretches 502 feet in length, with a storage capacity of 95 acre-feet. Despite its uncontrolled spillway type, the dam has been assessed as satisfactory and poses a significant hazard potential, prompting regular inspections by the Iowa DNR.

Owned and regulated by the local government, the dam serves as a crucial component in managing stormwater runoff and protecting the city of DES MOINES from potential inundation. With a normal storage capacity of 20 acre-feet and a drainage area of 0.52 square miles, the dam plays a critical role in safeguarding the surrounding community from the adverse impacts of extreme weather events. While the risk assessment indicates a moderate level of risk, the dam's condition remains satisfactory, ensuring its continued effectiveness in flood risk reduction efforts.

As a key infrastructure asset in the Rock Island District, Se Des Moines Stormwater Detention Dam #4 exemplifies the importance of proactive water resource management in the face of changing climate patterns. With its significant storage capacity and strategic location, this earth dam stands as a testament to the collaborative efforts between local and state regulatory agencies in ensuring the resilience of Iowa's water infrastructure.