Hanlontown Slough Site 3, located in Worth County, Iowa, is a Federal-owned Fish and Wildlife Pond managed by the NRCS. The site, completed in 2000, serves as a crucial habitat for local wildlife, with a normal storage capacity of 121 acre-feet and a surface area of 96.5 acres. While the dam is of Earth type and has a height of 8 feet, it is considered to have a low hazard potential and is currently not rated for condition assessment.

With a drainage area of 5.3 square miles and being regulated by the Iowa DNR, Hanlontown Slough Site 3 plays a vital role in managing water resources in the region. The dam's uncontrolled spillway type and stone core make it a sustainable structure for maintaining water levels and supporting biodiversity. Despite its moderate risk assessment, the site has not been inspected recently and lacks an Emergency Action Plan, highlighting the need for continued monitoring and maintenance to ensure its long-term functionality.

Located near the TR-Willow Creek, this site is a valuable asset for conservation efforts in the area, providing a safe haven for various species of wildlife. As climate change continues to impact water resources, the importance of sites like Hanlontown Slough Site 3 in preserving ecosystems and supporting biodiversity becomes increasingly evident. It is essential for stakeholders to prioritize regular inspections and risk management measures to guarantee the sustainability and effectiveness of this critical water resource infrastructure.