Arkema Dam #2 is a privately owned earth dam located in Lake Rathbun, Iowa, along a tributary to Butcher Creek. Constructed in 2005 by USDA NRCS, this dam stands at a height of 27 feet and stretches 365 feet in length, providing flood risk reduction and grade stabilization to the area. With a maximum storage capacity of 39 acre-feet and a normal storage capacity of 8 acre-feet, the dam serves as a vital infrastructure for managing water resources in Marion County.

Despite its low hazard potential, Arkema Dam #2 plays a crucial role in protecting the surrounding area from potential flooding events. With a drainage area of 0.31 square miles and a maximum discharge capacity of 129 cubic feet per second, this dam helps regulate water flow and mitigate flood risks. With state permitting, inspection, and enforcement in place, Arkema Dam #2 is well-maintained and equipped to handle any emergencies that may arise, showcasing a commitment to sustainable water resource management and climate resilience in the region.