About this river
Stillwater River is an 18.6 mile river near Adventure Whitewater in Montana. Streamflow is measured at the USGS gauge Stillwater River near Absarokee, MT (site 06205000). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1935 to 2025
Stillwater River typically runs highest in June, at a median 3,290 cfs, and lowest in February, at 265 cfs. The highest flow on record for any single day is 14,400 cfs, in 2022.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 283 | 234 to 332 | |
| February | 265 | 223 to 305 | |
| March | 265 | 229 to 313 | |
| April | 359 | 277 to 454 | |
| May | 1,210 | 799 to 1,860 | |
| June | 3,290 | 2,355 to 4,450 | |
| July | 2,010 | 1,410 to 3,020 | |
| August | 743 | 580 to 973 | |
| September | 532 | 405 to 707 | |
| October | 515 | 412 to 609 | |
| November | 417 | 360 to 469 | |
| December | 320 | 268 to 376 |
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 Stillwater River near Absarokee, MT (site 06205000). 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 Stillwater 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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