Around here
Around Illinois River
Data Source: Recreation.gov · Public land: USGS PAD-US
About this river
Illinois River is a 24.8 mile river near Prairie Creek Marina in Arkansas. Streamflow is measured at the USGS gauge Illinois River at Hwy. 16 near Siloam Springs AR (site 07195400). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1979 to 2026
Illinois River typically runs highest in May, at a median 682 cfs, and lowest in October, at 198 cfs. The highest flow on record for any single day is 58,500 cfs, in 2017.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 293 | 191 to 658 |
| February | 399 | 221 to 660 |
| March | 452 | 298 to 755 |
| April | 538 | 316 to 966 |
| May | 682 | 326 to 1,330 |
| June | 358 | 253 to 612 |
| July | 261 | 171 to 468 |
| August | 233 | 159 to 358 |
| September | 201 | 140 to 290 |
| October | 198 | 142 to 296 |
| November | 255 | 161 to 436 |
| December | 281 | 186 to 533 |
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 27 years of record. Statistics published by the US Geological Survey for Illinois River at Hwy. 16 near Siloam Springs AR (site 07195400). 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 Illinois River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
