Dillon-Syltie-Boulton, also known as Porter Dam, is a local government-owned structure located in Taunton, Minnesota, along the Yellow Medicine River. Built in 1974 by the USDA NRCS, this earth dam stands at a height of 54 feet and spans 740 feet in length. Its primary purpose is flood risk reduction, with a storage capacity of 497 acre-feet and a drainage area of 5 square miles.

Managed by the MNDNR EWR, Dillon-Syltie-Boulton is regulated, permitted, inspected, and enforced by state authorities to ensure its safety and functionality. The dam's condition assessment in 2012 deemed it satisfactory, with a significant hazard potential and a moderate risk level. While its spillway is uncontrolled and its outlet gates are also uncontrolled, the dam has not been modified since its completion.

Overall, Dillon-Syltie-Boulton plays a crucial role in mitigating flood risks in the area, highlighting the importance of proper management and maintenance of water resources to protect the surrounding communities and environment from potential hazards.