State Ditch No. 90, also known as Twin Lake F Management Area, is a state-owned water resource located in Lake Bronson, Minnesota. Completed in 1970, this Earth dam stands at a height of 7 feet and spans 110 feet in length, with a storage capacity of 1001 acre-feet. The primary purpose of State Ditch No. 90 is for recreation, offering opportunities for water enthusiasts to enjoy activities in the surrounding area.

Managed by the Minnesota Department of Natural Resources, State Ditch No. 90 is regulated, inspected, and enforced by state authorities to ensure its safety and functionality. With a low hazard potential and satisfactory condition assessment, this water resource poses a moderate risk, prompting the need for ongoing risk management measures. While the dam is equipped with an uncontrolled spillway and has a drainage area of 35 acres, it is crucial for enthusiasts and stakeholders to stay informed about its management and potential risks.

For water resource and climate enthusiasts in Kittson County, State Ditch No. 90 serves as a vital recreational area along the Two Rivers South Branch. With its Earth dam structure and regulated state ownership, this site offers a unique blend of outdoor activities and environmental stewardship. As the dam undergoes regular inspections and risk assessments, it continues to provide a safe and enjoyable experience for all who visit and appreciate the beauty of Minnesota's water resources.