USGS Streamgage 14242580
Toutle River at Tower Road near Silver Lake, WA
Toutle River at Tower Road near Silver Lake, WA is USGS streamgage 14242580 in Washington, monitoring river discharge in hydrologic subbasin 17080005. It drains a watershed of about 496 square miles. Discharge records at this site go back to 1981. Typical flow runs near 713.8 cfs in July and 2,446.3 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 496 sq mi
- Subbasin (HUC-8)
- 17080005
- Coordinates
- 46.335, -122.84083
- USGS site number
- 14242580
- Records begin
- 1981-03-24 (45 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 45 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 | 1,333.2 | 2,896.5 | 7,047.7 | |
| February | 1,283.4 | 2,467.6 | 5,800 | |
| March | 1,405.8 | 2,579.4 | 5,219.7 | |
| April | 1,593.7 | 2,446.3 | 4,357 | |
| May | 1,213.7 | 1,975.8 | 3,526.8 | |
| June | 796.4 | 1,377.3 | 2,874.7 | |
| July | 446.4 | 713.8 | 1,251.6 | |
| August | 339.3 | 457.1 | 669.2 | |
| September | 290.6 | 399.9 | 722 | |
| October | 333.3 | 626 | 1,935.1 | |
| November | 688.2 | 2,149.3 | 5,421 | |
| December | 1,161.3 | 2,497.4 | 7,063.5 |
All values in cubic feet per second (cfs).