Located in the picturesque Big Wyacondah Watershed in Iowa, Site 20 is a vital water resource managed by the local government for various purposes including fire protection, stock, and small fish pond activities. Constructed in 1971 by the USDA NRCS, this Earth-type dam stands at 27 feet tall and spans 506 feet in length, providing a storage capacity of 66 acre-feet in the South Wyacondah River basin.

With a low hazard potential and a moderate risk assessment rating, Big Wyacondah Watershed Site 20 is a key component of flood risk reduction in the region. While not currently rated for condition assessment, the dam's state-regulated status ensures ongoing inspection, enforcement, and permitting by the Iowa DNR to maintain its integrity and safety. This site serves as a valuable asset in water management and conservation efforts, contributing to the overall sustainability of the watershed ecosystem in Davis County.

Water resource and climate enthusiasts will find Big Wyacondah Watershed Site 20 to be a fascinating case study in dam infrastructure and management. From its historical construction to its modern regulatory oversight, this site exemplifies the importance of responsible water resource utilization for both human activities and environmental protection. As a part of the larger network of dams in the area, Site 20 plays a crucial role in ensuring water security and resilience in the face of changing climate conditions, making it a noteworthy site for study and appreciation.