About this river
East Gallatin River is a 4.6 mile stream near Montana Angler in Montana. Streamflow is measured at the USGS gauge E Gallatin R ab Water Reclamation Fa nr Bozeman MT (site 06048650). The National Hydrography Dataset places it at stream order 4. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
2015 to 2026
East Gallatin River typically runs highest in May, at a median 420 cfs, and lowest in December, at 44 cfs. The highest flow on record for any single day is 2,170 cfs, in 2018.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 46 | 36 to 56 | |
| February | 49 | 41 to 57 | |
| March | 77 | 65 to 112 | |
| April | 233 | 144 to 313 | |
| May | 420 | 312 to 572 | |
| June | 225 | 136 to 288 | |
| July | 68 | 53 to 102 | |
| August | 46 | 35 to 61 | |
| September | 54 | 38 to 63 | |
| October | 57 | 46 to 73 | |
| November | 56 | 47 to 67 | |
| December | 44 | 38 to 51 |
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 11 years of record. Statistics published by the US Geological Survey for E Gallatin R ab Water Reclamation Fa nr Bozeman MT (site 06048650). 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 East Gallatin 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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