Located in Decatur County, Iowa, West Fork Big Creek Watershed Site B-37 is a flood risk reduction structure designed by USDA NRCS and completed in 2005. The dam, primarily owned and regulated by the Iowa Department of Natural Resources, serves to mitigate flood hazards in the area. With a height of 22 feet and a length of 446 feet, the earth dam has a storage capacity of 83 acre-feet and covers a surface area of 4.9 acres.

Despite its low hazard potential and moderate risk assessment rating, the condition of West Fork Big Creek Watershed Site B-37 has not been formally rated. The structure operates with an uncontrolled spillway type and is inspected, permitted, and regulated by the state of Iowa. While it currently does not have an Emergency Action Plan in place, the dam serves as a vital resource for managing flood risks in the region. As a water resource and climate enthusiast, exploring the intricacies of this flood risk reduction structure can provide valuable insights into sustainable water management practices and infrastructure development in the area.