Nelson South Wetland Dam, located in Pocahontas County, Iowa, was completed in 2004 by the NRCS with a primary purpose of serving as a Fish and Wildlife Pond. This earth dam stands at a height of 10 feet and has a length of 2500 feet, creating a storage capacity of 151 acre-feet and covering a surface area of 22.3 acres. The dam is regulated by the Iowa DNR and is designed to control the flow of water from TR- Cedar Creek, providing essential habitat for local fish and wildlife species.

Despite its low hazard potential, the dam is considered to have a moderate risk level and has not been rated for its current condition. The spillway, which is uncontrolled, has a width of 3 feet, and the dam is inspected, permitted, and regulated by state agencies to ensure its safety and proper function. While the dam has not been modified in recent years and does not have any associated structures, it plays a crucial role in managing water resources in the area and supporting the ecological diversity of the wetland ecosystem.

Overall, Nelson South Wetland Dam serves as a vital component of the local water infrastructure, providing valuable habitat for wildlife and contributing to the conservation efforts in the region. With its strategic location and design, the dam represents a successful collaboration between local government and state agencies in managing water resources and promoting environmental stewardship in the community.