Middle Fork Snoqualmie River in Washington
Around here
Around Middle Fork Snoqualmie River
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
Middle Fork Snoqualmie River is a 38.1 mile river. Streamflow is measured at the USGS gauge Middle Fork Snoqualmie River near Tanner, WA (site 12141300). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1961 to 2026
Middle Fork Snoqualmie River typically runs highest in May, at a median 1,680 cfs, and lowest in September, at 251 cfs. The highest flow on record for any single day is 25,700 cfs, in 2009.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 939 | 552 to 1,760 |
| February | 813 | 568 to 1,300 |
| March | 865 | 596 to 1,280 |
| April | 1,095 | 832 to 1,575 |
| May | 1,680 | 1,200 to 2,240 |
| June | 1,535 | 1,095 to 2,215 |
| July | 663 | 477 to 1,080 |
| August | 253 | 203 to 406 |
| September | 251 | 169 to 448 |
| October | 545 | 264 to 1,060 |
| November | 1,095 | 691 to 1,820 |
| December | 943 | 617 to 1,680 |
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 64 years of record. Statistics published by the US Geological Survey for Middle Fork Snoqualmie River near Tanner, WA (site 12141300). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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