About this river
Mississippi River is a 57.4 mile river near Cache Bayou Outfitters in Illinois. Streamflow is measured at the USGS gauge Mississippi River at Thebes, IL (site 07022000). The National Hydrography Dataset places it at stream order 10. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1933 to 2026
Mississippi River typically runs highest in May, at a median 328,000 cfs, and lowest in January, at 119,000 cfs. The highest flow on record for any single day is 1,030,000 cfs, in 2016.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 119,000 | 83,500 to 171,000 | |
| February | 141,000 | 89,100 to 211,000 | |
| March | 244,000 | 173,000 to 312,000 | |
| April | 308,500 | 229,500 to 428,000 | |
| May | 328,000 | 223,000 to 458,000 | |
| June | 283,500 | 194,000 to 407,000 | |
| July | 230,000 | 150,000 to 307,000 | |
| August | 151,000 | 107,000 to 192,000 | |
| September | 126,000 | 96,200 to 177,000 | |
| October | 123,000 | 89,800 to 182,000 | |
| November | 134,000 | 94,950 to 199,000 | |
| December | 120,000 | 80,600 to 177,000 |
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 91 years of record. Statistics published by the US Geological Survey for Mississippi River at Thebes, IL (site 07022000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Mississippi 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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