USGS Streamgage 12448000
Chewuch River at Winthrop, WA
Chewuch River at Winthrop, WA is USGS streamgage 12448000 in Washington, monitoring river discharge in hydrologic subbasin 17020008. It drains a watershed of about 525 square miles. Discharge records at this site go back to 1991. Typical flow runs near 313.9 cfs in July and 443.9 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 525 sq mi
- Gauge elevation
- 1,750 ft
- Subbasin (HUC-8)
- 17020008
- Coordinates
- 48.47709, -120.18647
- USGS site number
- 12448000
- Records begin
- 1991-10-01 (35 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 35 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 | 50.8 | 75.6 | 117.1 | |
| February | 50.7 | 80.9 | 124 | |
| March | 60 | 111.5 | 249.3 | |
| April | 168.7 | 443.9 | 1,133.7 | |
| May | 655.7 | 1,611.7 | 3,599.7 | |
| June | 469 | 1,018.5 | 2,653.3 | |
| July | 143.9 | 313.9 | 857.4 | |
| August | 53.9 | 110.2 | 248.3 | |
| September | 37.4 | 64.6 | 139.2 | |
| October | 64.2 | 93.3 | 177.5 | |
| November | 64.9 | 104.8 | 205.9 | |
| December | 55.1 | 86.2 | 146.1 |
All values in cubic feet per second (cfs).