About this river
Fox River is a 7.7 mile river near Lets GO Fishing in Illinois. Streamflow is measured at the USGS gauge Fox River (tailwater) at Algonquin, IL (site 05550001). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
2009 to 2026
Fox River typically runs highest in April, at a median 2,195 cfs, and lowest in September, at 509 cfs. The highest flow on record for any single day is 7,640 cfs, in 2017.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 871 | 578 to 1,230 | |
| February | 1,010 | 613 to 1,550 | |
| March | 1,990 | 1,500 to 2,610 | |
| April | 2,195 | 1,240 to 2,950 | |
| May | 1,600 | 861 to 2,810 | |
| June | 1,080 | 614 to 1,935 | |
| July | 824 | 417 to 1,810 | |
| August | 602 | 379 to 1,080 | |
| September | 509 | 364 to 994 | |
| October | 614 | 422 to 1,100 | |
| November | 1,030 | 832 to 1,505 | |
| December | 840 | 582 to 1,460 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 17 years of record. Statistics published by the US Geological Survey for Fox River (tailwater) at Algonquin, IL (site 05550001). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
8 mapped launches sit in the mapped area of Fox River. Ramp data comes from the USGS national boat-ramp inventory.
- Fox 14 MarinaFox RiverRestricted
- Fox 14 Marina Fox RiverPublic
- Welch CircleFox RiverRestricted
- Lake Atwood Boat LaunchPublic
- Fox River Forest PreserveFox RiverRestricted
- Port Barrington Forest PreserveFox RiverPublic
- Center StreetFox RiverPublic
- Nish RoadFox RiverRestricted
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Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Fox River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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