USGS Streamgage 12452800
Entiat River near Ardenvoir, WA
Entiat River near Ardenvoir, WA is USGS streamgage 12452800 in Washington, monitoring river discharge in hydrologic subbasin 17020010. It drains a watershed of about 203 square miles. Discharge records at this site go back to 1957. Typical flow runs near 474.8 cfs in July and 319.1 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Washington
- Drainage area
- 203 sq mi
- Gauge elevation
- 1,566 ft
- Subbasin (HUC-8)
- 17020010
- Coordinates
- 47.81846, -120.42314
- USGS site number
- 12452800
- Records begin
- 1957-09-01 (69 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 69 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 | 52.9 | 92.1 | 216.2 | |
| February | 59.5 | 95.1 | 237.6 | |
| March | 73.5 | 124.2 | 289.9 | |
| April | 143.9 | 319.1 | 615.7 | |
| May | 515.3 | 970.8 | 1,938.1 | |
| June | 579.4 | 1,225 | 2,279.3 | |
| July | 212.3 | 474.8 | 1,156.4 | |
| August | 99.9 | 163 | 335.7 | |
| September | 65 | 93.7 | 162.8 | |
| October | 57.7 | 86.2 | 161.5 | |
| November | 60.9 | 100.3 | 298.4 | |
| December | 55.3 | 90.8 | 276.9 |
All values in cubic feet per second (cfs).