USGS Streamgage 12147680
Phelps Creek below Unnamed Tributary near Index, WA
Phelps Creek below Unnamed Tributary near Index, WA is USGS streamgage 12147680 in Washington, monitoring river discharge in hydrologic subbasin 17110010. Discharge records at this site go back to 2019. Typical flow runs near 5.1 cfs in July and 19.8 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Gauge elevation
- 1,853 ft
- Subbasin (HUC-8)
- 17110010
- Coordinates
- 47.70416, -121.60077
- USGS site number
- 12147680
- Records begin
- 2019-10-24 (7 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 7 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 | — | 16.6 | — | |
| February | — | 13 | — | |
| March | — | 13.6 | — | |
| April | — | 19.8 | — | |
| May | — | 28.1 | — | |
| June | — | 19.4 | — | |
| July | — | 5.1 | — | |
| August | — | 1.8 | — | |
| September | — | 2.9 | — | |
| October | — | 12.2 | — | |
| November | — | 19.7 | — | |
| December | — | 18 | — |
All values in cubic feet per second (cfs).
Other gauges in this subbasin
- South Fork Tolt River near Carnation, WA
- SF Tolt River below Regulating Basin near Carnation, WA
- Tolt River near Carnation, WA
- Snoqualmie River near Carnation, WA
- Snoqualmie River at Duvall, WA
- Middle Fork Snoqualmie River near Tanner, WA
- NF Snoqualmie River near Snoqualmie Falls, WA
- North Fork Snoqualmie River near North Bend, WA