Fox River

About

Fox River, Illinois — 1848 Illinois and Michigan Canal. Long before any gauge measured its flow, the Fox ran through the ancestral territory of the Potawatomi, the Kickapoo, the Peoria of the Illinois Confederation, the Miami, the Sauk, the Meskwaki, and the Winnebago. For these peoples the river was a primary travel corridor, a fishing ground, and a gathering place. The Prairie Band Potawatomi Nation, the Citizen Potawatomi Nation, the Kickapoo Tribe, the Peoria Tribe, and the Ho-Chunk Nation still maintain cultural connections and treaty-protected rights along the water. The cession framework that reshaped the region was laid down through the 1795 Treaty of Greenville, the 1804 Treaty of St. Louis, the 1816 Treaty of Fort Harrison, the treaties of 1818 through 1832, the 1830 Indian Removal Act, and the 1832 Black Hawk War.

The timber came next. The Fox was logged from the 1830s through the 1920s to feed the 1850–1910 Illinois hardwood industry — oak, hickory, walnut, maple, elm, and ash, the state's signature timber. That wood supplied the 1848–1910s Illinois and Michigan Canal, the railway expansion of the Chicago, Burlington & Quincy and Illinois Central lines, and the 1880–1920s Chicago lumber trade. Logging drives ran the river between 1860 and 1910. The exhaustion of the old-growth stands around 1910, the start of state forestry conservation in 1915, and the establishment of state parks in the 1930s finally ended large-scale cutting.

Water carried the region's economy as much as timber did. The 1848 opening of the Illinois and Michigan Canal, connecting the Illinois River to Lake Michigan via the Des Plaines and Chicago rivers, turned the Fox into a major transportation artery. Through the 1880s and 1920s the river powered a string of industrial cities — Aurora, Elgin, and Wauconda — and the electrical generation of the 1892–1914 era made it the principal industrial waterway of northern Illinois. Extensive dam construction followed between 1928 and 1940, and their legacy still shapes the river: the Elgin to St. Charles run is a mill-town corridor of dam portages.

That industrial century left scars. From the 1960s through the 1990s the Fox suffered major pollution, particularly the PCBs of the 1980s through 2000s. The 2008–2014 PCB dredging of the lower Fox was the largest PCB cleanup in U.S. history. Since 2010 the Illinois EPA, working with Fox Watershed partnerships and the Prairie Band Potawatomi Nation, has addressed more than a century of logging, agricultural, and industrial impacts. Streambank stabilization ran from 2015 to 2024, native fish restocking of smallmouth bass and sauger from 2017 to 2024, and Asian carp monitoring and barrier projects from 2020 to 2024.

Today the Fox is a popular paddle route, and its Class I flatwater rewards unhurried trips. Optimal flows run 800 to 2,500 cfs. The Algonquin to Elgin stretch — fifteen miles below the chain of lakes outlet — offers easy flatwater; the fifteen miles from Elgin to St. Charles thread the old mill towns and their dams; and the twenty miles from St. Charles to Yorkville carry the best scenery, running past bluffs and parks. Along the banks the Fox River Trail follows the former Aurora, Elgin & Fox River Electric Company right-of-way between Aurora and Elgin, the old electric interurban line reborn beneath the feet of cyclists and walkers.