Vermilion River

About

National Natural Landmark, 1986. The Vermilion's paddling identity is written in its numbers. Gauged at USGS station 05555300, the river averages 680 cubic feet per second against a historical average near 610, and the canyon run holds its Class I–III character best when flows sit between 300 and 1,200 cubic feet per second. The signature reach carries boaters from Oglesby down to LaSalle, threading a canyon section walled by rock. Upstream, the side canyons of Matthiessen State Park are hiking access only — a place to walk the geology rather than run it.

The river's early chapters belong to timber. From the 1830s through the 1920s, the Vermilion was logged to feed the 1850–1910 Illinois hardwood industry, moving oak, hickory, walnut, maple, elm, and ash — the state's signature timber — down its banks. That harvest supplied the 1848–1910s Illinois and Michigan Canal, the 1860–1910s Chicago, Burlington & Quincy and Illinois Central Railway expansion, and the 1880–1920s Chicago lumber trade. Vermilion County sawmills, the logging drives, and the 1875–1920s corn-belt agriculture era were the major operators along the corridor.

The cutting slowed for reasons the land dictated. The 1910 exhaustion of the old-growth stands, the 1915 start of state forestry conservation, and the 1930s establishment of Illinois state parks together ended large-scale logging. Out of that conservation turn came the protections the river carries today: the 1981 National Wild and Scenic River designation and Matthiessen State Park, which preserves the side-canyon country above the main run.

Long before the mills, the Vermilion was a corridor of the Illinois peoples. It flowed through the ancestral territory of the Potawatomi, the Kickapoo, the Peoria of the Illinois Confederation, the Miami, the Sauk, the Meskwaki (Fox), and the Winnebago (Ho-Chunk), serving as a travel route, fishing ground, and gathering place. Today the Prairie Band Potawatomi Nation, the Citizen Potawatomi Nation, the Kickapoo Tribe, the Peoria Tribe, and the Ho-Chunk Nation maintain cultural connections and treaty-protected rights, part of a cession framework built through the 1795 Treaty of Greenville, the 1804 Treaty of St. Louis, the 1816 Treaty of Fort Harrison, the 1818–1832 Treaties, the 1830 Indian Removal Act, and the 1832 Black Hawk War.

Recognition of the river's natural value came in the modern era. In 1986 a 5.4-mile stretch near Lowell was designated a National Natural Landmark, with the surrounding land protected as the Vermilion River Nature Preserve. The 74-mile river — a tributary of the Illinois River draining Ford, Livingston, and LaSalle counties — is prized as a smallmouth bass fishery for its clear water and rocky bottom. Restoration has followed: since 2010 the Illinois EPA, working with the Vermilion Watershed Partnership and the Prairie Band Potawatomi Nation, has addressed more than a century of logging, agricultural, and industrial impacts through 2015–2024 streambank stabilization, 2017–2024 native fish restocking of smallmouth bass and sauger, and 2020–2024 Asian carp monitoring and barrier projects. The result is a working corridor that still runs free — its canyon open to paddlers, its side canyons to hikers, and its clear reaches to anglers.