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Around South Fork Skykomish River
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
South Fork Skykomish River is a 19.9 mile river near Alpine Adventures in Washington. Streamflow is measured at the USGS gauge South Fork Skykomish River at Skykomish, WA (site 12131500). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
2017 to 2026
South Fork Skykomish River typically runs highest in May, at a median 2,550 cfs, and lowest in September, at 208 cfs. The highest flow on record for any single day is 23,100 cfs, in 2026.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 1,230 | 837 to 2,060 |
| February | 1,080 | 690 to 1,460 |
| March | 964 | 668 to 1,820 |
| April | 1,695 | 1,095 to 2,100 |
| May | 2,550 | 1,880 to 3,660 |
| June | 1,870 | 1,080 to 3,070 |
| July | 666 | 408 to 954 |
| August | 285 | 243 to 374 |
| September | 208 | 180 to 254 |
| October | 368 | 203 to 1,380 |
| November | 1,320 | 860 to 2,205 |
| December | 1,230 | 838 to 2,080 |
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 10 years of record. Statistics published by the US Geological Survey for South Fork Skykomish River at Skykomish, WA (site 12131500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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