About this river
Arkansas River is a 33.2 mile river near Flatwater Fitness & Fun in Kansas. Streamflow is measured at the USGS gauge Arkansas R at Derby, KS (site 07144550). The National Hydrography Dataset places it at stream order 9. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1969 to 2026
Arkansas River typically runs highest in June, at a median 1,060 cfs, and lowest in January, at 336 cfs. The highest flow on record for any single day is 44,300 cfs, in 1999.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 336 | 236 to 527 | |
| February | 392 | 256 to 614 | |
| March | 471 | 292 to 1,060 | |
| April | 598 | 316 to 1,255 | |
| May | 828 | 423 to 1,830 | |
| June | 1,060 | 581 to 2,340 | |
| July | 605 | 351 to 1,150 | |
| August | 473 | 269 to 1,030 | |
| September | 422 | 236 to 905 | |
| October | 370 | 235 to 694 | |
| November | 381 | 252 to 647 | |
| December | 352 | 245 to 561 |
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 58 years of record. Statistics published by the US Geological Survey for Arkansas R at Derby, KS (site 07144550). 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 Arkansas 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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