Drews Lake Dam, located in Adel, Iowa, is a private-owned structure designed by MHF Engineering in 2005 for recreational purposes. Situated on Tr- Raccoon River in Dallas County, this earth dam stands at a height of 20 feet and has a length of 1000 feet, providing a storage capacity of 140 acre-feet. With a surface area of 10.9 acres and a drainage area of 0.31 square miles, the dam serves as a significant hazard potential due to its uncontrolled spillway type.

Despite not having a condition assessment rating, Drews Lake Dam falls under moderate risk (3) based on the data available. The dam is state-regulated by the Iowa Department of Natural Resources (DNR), with permitting, inspection, and enforcement processes in place. While it has not been modified since its completion, the dam is equipped with emergency action plans to ensure public safety in case of any unforeseen events. With its strategic location and design, Drews Lake Dam offers a recreational haven for water resource and climate enthusiasts in the area.