About this river
Big Quilcene River is a 2.4 mile river near Olympic Tours in Washington. Streamflow is measured at the USGS gauge Big Quilcene River below Diversion near Quilcene, WA (site 12052210). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1994 to 2026
Big Quilcene River typically runs highest in May, at a median 153 cfs, and lowest in September, at 28 cfs. The highest flow on record for any single day is 2,760 cfs, in 2015.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 148 | 97 to 281 | |
| February | 111 | 78 to 190 | |
| March | 108 | 75 to 172 | |
| April | 127 | 98 to 176 | |
| May | 153 | 116 to 201 | |
| June | 136 | 91 to 182 | |
| July | 75 | 56 to 101 | |
| August | 39 | 29 to 50 | |
| September | 28 | 27 to 34 | |
| October | 31 | 27 to 51 | |
| November | 94 | 46 to 235 | |
| December | 126 | 67 to 229 |
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 32 years of record. Statistics published by the US Geological Survey for Big Quilcene River below Diversion near Quilcene, WA (site 12052210). 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 Big Quilcene 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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