USGS Streamgage 12024000
South Fork Newaukum River near Onalaska, WA
South Fork Newaukum River near Onalaska, WA is USGS streamgage 12024000 in Washington, monitoring river discharge in hydrologic subbasin 17100103. It drains a watershed of about 42 square miles. Discharge records at this site go back to 1944. Typical flow runs near 44.3 cfs in July and 215.5 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 42 sq mi
- Gauge elevation
- 559 ft
- Subbasin (HUC-8)
- 17100103
- Coordinates
- 46.57566, -122.68512
- USGS site number
- 12024000
- Records begin
- 1944-07-01 (82 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 81 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 | 129.1 | 320.1 | 916.8 | |
| February | 136.8 | 276.6 | 676 | |
| March | 127.8 | 259.3 | 559.5 | |
| April | 114.2 | 215.5 | 437.7 | |
| May | 82.4 | 127 | 269.6 | |
| June | 48 | 74.2 | 158.7 | |
| July | 31.2 | 44.3 | 87.7 | |
| August | 22.7 | 33.9 | 64.2 | |
| September | 22.3 | 36.6 | 115.5 | |
| October | 24.4 | 62.7 | 255.5 | |
| November | 74.5 | 213.9 | 681 | |
| December | 119.9 | 280 | 763.1 |
All values in cubic feet per second (cfs).
Other gauges in this subbasin
- NF Newaukum River above Bear Creek near Forest, WA
- Newaukum River near Chehalis, WA
- Chehalis River at Wwtp at Chehalis, WA
- Skookumchuck River near Vail, WA
- Skookumchuck River below Bldy Run Creek near Centralia, WA
- Skookumchuck River near Bucoda, WA
- Chehalis River near Grand Mound, WA
- Chehalis River near Rochester, WA