Twp Road 87 is a flood risk reduction structure located in Marshall, Minnesota, along the Yellow Medicine River. Completed in 1995, this earth dam stands at a height of 15 feet and has a total length of 400 feet. With a storage capacity of 300 acre-feet, it serves the primary purpose of mitigating flood risks in the area. The dam is state-regulated and undergoes regular inspections to ensure its satisfactory condition.

Owned by the local government, Twp Road 87 is designed to handle a maximum discharge of 2300 cubic feet per second and has a low hazard potential. The structure is equipped with uncontrolled spillways and outlet gates, with a spillway width of 12 feet. Despite its moderate risk assessment, the dam has been deemed satisfactory in terms of condition. It is located in Lincoln County, Minnesota, and falls under the jurisdiction of the Minnesota Department of Natural Resources for regulation, permitting, inspection, and enforcement.

Water resource and climate enthusiasts will find Twp Road 87 to be a fascinating example of flood risk reduction infrastructure in Minnesota. Its location along the Yellow Medicine River, its design characteristics, and its regulatory oversight by state agencies make it a crucial component in managing water resources in the region. With its low hazard potential and satisfactory condition assessment, Twp Road 87 stands as a reliable structure for protecting the surrounding area from potential flooding events.