USGS Streamgage 12449500
Methow River at Twisp, WA
Methow River at Twisp, WA is USGS streamgage 12449500 in Washington, monitoring river discharge in hydrologic subbasin 17020008. It drains a watershed of about 1,301 square miles. Discharge records at this site go back to 1919. Typical flow runs near 1,333.4 cfs in July and 1,426.7 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 1,301 sq mi
- Gauge elevation
- 1,568 ft
- Subbasin (HUC-8)
- 17020008
- Coordinates
- 48.36515, -120.11619
- USGS site number
- 12449500
- Records begin
- 1919-06-01 (107 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 107 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 | 211.5 | 295.6 | 514.8 | |
| February | 214.7 | 298.6 | 586.3 | |
| March | 234.4 | 376.8 | 938.8 | |
| April | 494.5 | 1,426.7 | 3,153.3 | |
| May | 2,134.8 | 4,512.3 | 9,328.4 | |
| June | 1,919.7 | 4,301.7 | 8,085.3 | |
| July | 598.9 | 1,333.4 | 3,266.8 | |
| August | 231.4 | 421.1 | 811.5 | |
| September | 183.7 | 269.7 | 481.5 | |
| October | 237 | 333.2 | 714.9 | |
| November | 264.8 | 399.1 | 909.9 | |
| December | 235.5 | 343.5 | 701.6 |
All values in cubic feet per second (cfs).