Fox River
Kane / Kendall Co. · 115 mi · Class I
4,200CFS/ 13.83 ft
Above Optimal
Rising slowly (+70 cfs/hr)· +30 cfs in 3h
Optimal: 800–2500 CFS · USGS #05551000
Flow data is live from USGS·Rapid classifications and CFS ranges need community verification·Know this river?
115 mi
Length
Class I
Difficulty
800–2500 cfs
Optimal
1,400 cfs
Avg Flow
1,260 cfs
Hist. Median
#05551000
USGS Gauge
Fox River Water Trail · Illinois State Water Trail

The Fox River flows 115 miles through the western Chicago suburbs, offering accessible flatwater paddling through a chain of riverside parks, historic mill towns, and preserved natural areas. Despite its suburban setting, the Fox maintains surprisingly scenic stretches with bald eagles, great blue herons, and wooded bluffs between Elgin and Yorkville. The St. Charles-to-Yorkville reach is the scenic centerpiece of the Illinois State Water Trail, while dam portages punctuate the mill-town corridor from Elgin to St. Charles.

Trip sections
Algonquin to Elgin — 15 mi, chain of lakes outlet, easy flatwater
Elgin to St. Charles — 15 mi, mill-town corridor, dam portages
St. Charles to Yorkville — 20 mi, best scenery, bluffs and parks
72-Hour Flow Forecast
NOAA NWPS
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10-Year Flow Patterns
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Data Quality

River conditions are community-verified. CFS ranges, difficulty ratings, and trip sections may not reflect every flow level or seasonal change. Always check current conditions, scout unfamiliar rapids, and paddle within your skill level. If you spot an error, use the Improve This River button at the top of the page — your local knowledge is what makes this atlas accurate.