About this river
Green River is a 19.3 mile river near Quad Cities Kayak River Adventures in Illinois. Streamflow is measured at the USGS gauge Green River near Geneseo, IL (site 05447500). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1936 to 2026
Green River typically runs highest in April, at a median 810 cfs, and lowest in September, at 159 cfs. The highest flow on record for any single day is 10,600 cfs, in 2019.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 352 | 162 to 721 | |
| February | 460 | 225 to 902 | |
| March | 802 | 493 to 1,230 | |
| April | 810 | 489 to 1,340 | |
| May | 737 | 448 to 1,270 | |
| June | 660 | 358 to 1,210 | |
| July | 390 | 229 to 694 | |
| August | 225 | 136 to 372 | |
| September | 159 | 97 to 353 | |
| October | 204 | 102 to 468 | |
| November | 299 | 128 to 551 | |
| December | 339 | 140 to 665 |
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 90 years of record. Statistics published by the US Geological Survey for Green River near Geneseo, IL (site 05447500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
4 mapped launches sit in the mapped area of Green River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Hennepin CanalHennepin CanalPublic
- Hennepin CanalHennepin CanalPublic
- Hennepin CanalHennepin CanalPublic
- Isaak Walton LeagueHennepin CanalPublic
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Green 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.
