USGS Streamgage 12488500
American River near Nile, WA
American River near Nile, WA is USGS streamgage 12488500 in Washington, monitoring river discharge in hydrologic subbasin 17030002. It drains a watershed of about 79 square miles. Discharge records at this site go back to 1909. Typical flow runs near 205.9 cfs in July and 266.3 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 79 sq mi
- Gauge elevation
- 2,777 ft
- Subbasin (HUC-8)
- 17030002
- Coordinates
- 46.97762, -121.1687
- USGS site number
- 12488500
- Records begin
- 1909-04-25 (117 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 87 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 | 50.8 | 109.9 | 287.5 | |
| February | 55.8 | 106.2 | 343.5 | |
| March | 70.2 | 130.5 | 320.6 | |
| April | 138.9 | 266.3 | 533.8 | |
| May | 306.2 | 551.5 | 1,060.8 | |
| June | 277.8 | 543.6 | 1,008 | |
| July | 94.5 | 205.9 | 530.5 | |
| August | 45.9 | 72.1 | 150.8 | |
| September | 35.8 | 50.8 | 84.1 | |
| October | 34.1 | 55.2 | 122 | |
| November | 48.9 | 93.9 | 301.4 | |
| December | 49.2 | 114.7 | 340.6 |
All values in cubic feet per second (cfs).