About this river
Snoqualmie River is a 9.7 mile river near Perfect Wave Sup & Kayak Rental in Washington. Streamflow is measured at the USGS gauge Snoqualmie River near Carnation, WA (site 12149000). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1929 to 2025
Snoqualmie River typically runs highest in May, at a median 4,600 cfs, and lowest in September, at 825 cfs. The highest flow on record for any single day is 76,300 cfs, in 2009.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 3,780 | 2,400 to 6,170 | |
| February | 3,210 | 2,320 to 4,950 | |
| March | 3,240 | 2,360 to 4,540 | |
| April | 3,875 | 3,035 to 5,045 | |
| May | 4,600 | 3,520 to 5,970 | |
| June | 3,980 | 2,770 to 5,630 | |
| July | 1,770 | 1,310 to 2,660 | |
| August | 826 | 687 to 1,150 | |
| September | 825 | 641 to 1,370 | |
| October | 1,650 | 947 to 2,910 | |
| November | 3,600 | 2,245 to 5,770 | |
| December | 3,990 | 2,650 to 6,250 |
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 96 years of record. Statistics published by the US Geological Survey for Snoqualmie River near Carnation, WA (site 12149000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
One mapped launch sits in the mapped area of Snoqualmie River. Ramp data comes from the USGS national boat-ramp inventory.
- High BridgeSnoqualmie RiverPublic
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