United States, Minnesota, Sherburne, Mississippi River Islands Scientific Natural Area. Sherburne & Wright Cos. ...Mississippi Scenic and Recreational River Islands SNA: Mississippi River Islands between Monticello and Elk River, Sec. 2, 3, 4, T32N, R26, 27W; Sec. 7, 9, 18, T121N, R23, 24W.. 032N 26W 0