USGS Streamgage 12147470
NF Tolt River above Yellow Creek near Carnation, WA
NF Tolt River above Yellow Creek near Carnation, WA is USGS streamgage 12147470 in Washington, monitoring river discharge in hydrologic subbasin 17110010. It drains a watershed of about 33 square miles. Discharge records at this site go back to 2015. Typical flow runs near 84.2 cfs in July and 314.2 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 33 sq mi
- Gauge elevation
- 1,122 ft
- Subbasin (HUC-8)
- 17110010
- Coordinates
- 47.71972, -121.7432
- USGS site number
- 12147470
- Records begin
- 2015-10-01 (11 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 11 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 151.9 | 356.5 | 1,315.3 | |
| February | 127.6 | 282.4 | 1,463.3 | |
| March | 137.5 | 290.3 | 1,188.3 | |
| April | 185.5 | 314.2 | 738.6 | |
| May | 153.7 | 326.3 | 584.9 | |
| June | 100.5 | 193.9 | 506.1 | |
| July | 50 | 84.2 | 160.7 | |
| August | 27.9 | 44.9 | 126.9 | |
| September | 22.4 | 41 | 237.2 | |
| October | 33.8 | 164.1 | 861.5 | |
| November | 124.1 | 338.4 | 1,333.1 | |
| December | 143.5 | 335 | 1,435.2 |
All values in cubic feet per second (cfs).
Other gauges in this subbasin
- North Fork Tolt River near Carnation, WA
- South Fork Tolt River near Index, WA
- Phelps Creek below Unnamed Tributary near Index, WA
- South Fork Tolt River near Carnation, WA
- SF Tolt River below Regulating Basin near Carnation, WA
- Tolt River near Carnation, WA
- Snoqualmie River near Carnation, WA
- Snoqualmie River at Duvall, WA