USGS Streamgage 12025000
Newaukum River near Chehalis, WA
Newaukum River near Chehalis, WA is USGS streamgage 12025000 in Washington, monitoring river discharge in hydrologic subbasin 17100103. It drains a watershed of about 155 square miles. Discharge records at this site go back to 1929. Typical flow runs near 77.2 cfs in July and 455 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 155 sq mi
- Gauge elevation
- 198 ft
- Subbasin (HUC-8)
- 17100103
- Coordinates
- 46.6201, -122.94513
- USGS site number
- 12025000
- Records begin
- 1929-03-01 (97 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 97 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 | 301.7 | 783.3 | 2,339.4 | |
| February | 312.2 | 697.6 | 1,912.8 | |
| March | 293.4 | 625.1 | 1,481.3 | |
| April | 242.6 | 455 | 1,016.8 | |
| May | 135.7 | 241.7 | 565.2 | |
| June | 80.7 | 144.7 | 358.2 | |
| July | 46.1 | 77.2 | 143.7 | |
| August | 30.4 | 47.7 | 82.4 | |
| September | 29.9 | 46.7 | 128.2 | |
| October | 41.5 | 98.3 | 418.9 | |
| November | 120.1 | 500.4 | 1,745 | |
| December | 265.8 | 756.7 | 2,277.4 |
All values in cubic feet per second (cfs).