About this river
Umatilla River is a 3.8 mile river near Tri City Guide Service in Washington. Streamflow is measured at the USGS gauge Umatilla River near Umatilla, OR (site 14033500). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1905 to 2026
Umatilla River typically runs highest in April, at a median 1,013 cfs, and lowest in July, at 15 cfs. The highest flow on record for any single day is 17,900 cfs, in 2020.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 431 | 264 to 891 | |
| February | 569 | 329 to 1,140 | |
| March | 875 | 493 to 1,490 | |
| April | 1,013 | 493 to 1,820 | |
| May | 406 | 117 to 806 | |
| June | 64 | 12 to 204 | |
| July | 15 | 5.6 to 50 | |
| August | 22 | 7.2 to 61 | |
| September | 46 | 13 to 103 | |
| October | 92 | 21 to 208 | |
| November | 178 | 120 to 281 | |
| December | 312 | 143 to 615 |
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 121 years of record. Statistics published by the US Geological Survey for Umatilla River near Umatilla, OR (site 14033500). 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 Umatilla 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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