USGS Streamgage 12506000
Toppenish Creek near Fort Simcoe, WA
Toppenish Creek near Fort Simcoe, WA is USGS streamgage 12506000 in Washington, monitoring river discharge in hydrologic subbasin 17030003. It drains a watershed of about 122 square miles. Discharge records at this site go back to 1909. Typical flow runs near 20.2 cfs in July and 237.2 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 122 sq mi
- Gauge elevation
- 1,311 ft
- Subbasin (HUC-8)
- 17030003
- Coordinates
- 46.31096, -120.78812
- USGS site number
- 12506000
- Records begin
- 1909-03-01 (117 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 118 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 | 26.2 | 61.4 | 215.5 | |
| February | 34.3 | 83.7 | 256.7 | |
| March | 51 | 146.9 | 504.2 | |
| April | 109.6 | 237.2 | 481.6 | |
| May | 64.8 | 137.9 | 364.6 | |
| June | 22 | 41.7 | 99 | |
| July | 8.5 | 20.2 | 36.8 | |
| August | 7.2 | 13.8 | 22.8 | |
| September | 8.5 | 14.1 | 21.7 | |
| October | 13.7 | 19.7 | 36.5 | |
| November | 19.1 | 27 | 66.4 | |
| December | 22.1 | 38.5 | 155.5 |
All values in cubic feet per second (cfs).