USGS Streamgage 12505450
Granger Drain at Granger, WA
Granger Drain at Granger, WA is USGS streamgage 12505450 in Washington, monitoring river discharge in hydrologic subbasin 17030003. Discharge records at this site go back to 1991. Typical flow runs near 49.7 cfs in July and 34.5 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Washington
- Gauge elevation
- 727 ft
- Subbasin (HUC-8)
- 17030003
- Coordinates
- 46.34346, -120.18699
- USGS site number
- 12505450
- Records begin
- 1991-05-17 (35 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 27 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 | 16.9 | 19.7 | 23.7 | |
| February | 16.3 | 19.5 | 23.5 | |
| March | 15.2 | 18.9 | 23.8 | |
| April | 26.6 | 34.5 | 41.7 | |
| May | 33.6 | 43.8 | 50.8 | |
| June | 36.4 | 47 | 54.5 | |
| July | 37.7 | 49.7 | 57.3 | |
| August | 41.8 | 52.4 | 59.3 | |
| September | 41.3 | 50.9 | 60.4 | |
| October | 29.3 | 41.3 | 51.2 | |
| November | 15.7 | 20.2 | 24.6 | |
| December | 15.9 | 19.6 | 22.8 |
All values in cubic feet per second (cfs).