USGS Streamgage 12465000
Crab Creek at Irby, WA
Crab Creek at Irby, WA is USGS streamgage 12465000 in Washington, monitoring river discharge in hydrologic subbasin 17020013. It drains a watershed of about 1,042 square miles. Discharge records at this site go back to 1942. Typical flow runs near 15.8 cfs in July and 75.4 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 1,042 sq mi
- Gauge elevation
- 1,401 ft
- Subbasin (HUC-8)
- 17020013
- Coordinates
- 47.36038, -118.85
- USGS site number
- 12465000
- Records begin
- 1942-09-01 (84 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 84 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 | 0.6 | 14 | 192.5 | |
| February | 5 | 67.3 | 443.3 | |
| March | 24.6 | 103.3 | 369.3 | |
| April | 23 | 75.4 | 202.4 | |
| May | 13.1 | 36.5 | 89.7 | |
| June | 8.7 | 23.4 | 50.6 | |
| July | 5.2 | 15.8 | 31.9 | |
| August | 2.9 | 10 | 22.1 | |
| September | 1.7 | 6.8 | 15.3 | |
| October | 1.4 | 5.1 | 14 | |
| November | 1.3 | 4.3 | 14.7 | |
| December | 0.8 | 4 | 26.8 |
All values in cubic feet per second (cfs).