Ken Southworth Jr. Dam is a privately owned structure located in Durango, Iowa, along an unnamed tributary to the Little Maquoketa River. Built in 2014 by the USDA NRCS, this earth dam serves primarily for grade stabilization purposes, with additional benefits for fish and wildlife ponds and recreation. Standing at 36 feet high and 260 feet long, the dam has a storage capacity of 24 acre-feet and a low hazard potential. Its spillway, with a width of 26 feet, is uncontrolled, allowing for the safe release of excess water.

Despite being a relatively new structure, Ken Southworth Jr. Dam has not yet undergone a condition assessment and is currently rated as "Not Rated." The dam's risk assessment is moderate, indicating a potential for issues that may require management measures in the future. With a location in Dubuque County, Iowa, this dam plays a crucial role in managing water resources in the area, ensuring stability and safety for the surrounding community. Water resource and climate enthusiasts will find Ken Southworth Jr. Dam to be an intriguing example of modern dam infrastructure in the Midwest, with a focus on sustainability and environmental conservation.