Upper Iowa River

The Upper Iowa River is a 156-mile-long (251 km) tributary of the Mississippi River in the upper Midwest of the United States.

Its headwaters are in southeastern Minnesota, in Mower County (Le Roy and Lodi townships) near the border with Iowa. It then flows through the Iowa counties of Howard, Winneshiek, and Allamakee, and finally into the Upper Mississippi River. Along its course, it passes through the Iowa cities of Chester, Lime Springs, Florenceville, Kendallville, Bluffton, and Decorah. Its watershed comprises nearly 641,000 acres (2,590 km).