Dd No 5-20 is a local government-owned dam located in Coffey County, Kansas, specifically in the city of Iola. Constructed with the primary purpose of flood risk reduction, this earth-type dam has a height of 17.5 feet and a length of 1370 feet. It has a storage capacity of 381.1 acre-feet and a drainage area of 0.86 square miles, with a maximum discharge of 660 cubic feet per second.

Managed by the Kansas Department of Agriculture, Dd No 5-20 is regulated, permitted, inspected, and enforced by the state agency. Despite being rated as having a low hazard potential, the dam's risk assessment is moderate, indicating a potential for future management measures to mitigate any identified risks. With its uncontrolled spillway type and a lack of outlet gates, this dam plays a crucial role in protecting the surrounding area from flooding events along the Long Creek-TR river or stream.

Overall, Dd No 5-20 is an essential infrastructure for flood risk reduction in the region, highlighting the importance of proper maintenance, inspection, and risk management to ensure its continued effectiveness in protecting the community and environment from potential hazards. As water resource and climate enthusiasts, understanding the details and functionalities of dams like Dd No 5-20 is crucial for promoting sustainable water management practices and resilience in the face of changing climate conditions.