About this river
Snoqualmie River is a 14.8 mile river near Bell Harbor Marina 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
7 mapped launches sit in the mapped area of Snoqualmie River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Snoqualmie River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
