USGS Streamgage 12115700
Boulder Creek near Cedar Falls, WA
Boulder Creek near Cedar Falls, WA is USGS streamgage 12115700 in Washington, monitoring river discharge in hydrologic subbasin 17110012. It drains a watershed of about 5 square miles. Discharge records at this site go back to 1983. Typical flow runs near 2.8 cfs in July and 29 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 5 sq mi
- Gauge elevation
- 1,620 ft
- Subbasin (HUC-8)
- 17110012
- Coordinates
- 47.36622, -121.69288
- USGS site number
- 12115700
- Records begin
- 1983-03-01 (43 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 43 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 | 7.2 | 24.5 | 92.1 | |
| February | 6.8 | 18.3 | 67.4 | |
| March | 6.9 | 21.3 | 59.5 | |
| April | 11.9 | 29 | 69.8 | |
| May | 8 | 27.4 | 63.4 | |
| June | 2.2 | 12.9 | 42.2 | |
| July | 0.3 | 2.8 | 10.9 | |
| August | 0 | 0.4 | 3.2 | |
| September | 0 | 0.4 | 7.3 | |
| October | 0.3 | 6 | 37.9 | |
| November | 5.4 | 25.4 | 93.3 | |
| December | 6.7 | 20.8 | 82.5 |
All values in cubic feet per second (cfs).
Other gauges in this subbasin
- Canyon Creek near Cedar Falls, WA
- Cedar River at Powerplant at Cedar Falls, WA
- Cedar River at Cedar Falls, WA
- Taylor Creek near Selleck, WA
- Cedar River near Landsburg, WA
- Cedar River below Diversion near Landsburg, WA
- Rock Creek below Walsh Lake near Landsburg, WA
- Rock Creek at Highway 516 near Ravensdale, WA