USGS Streamgage 12439500
Okanogan River at Oroville, WA
Okanogan River at Oroville, WA is USGS streamgage 12439500 in Washington, monitoring river discharge in hydrologic subbasin 17020006. It drains a watershed of about 3,195 square miles. Discharge records at this site go back to 1942. Typical flow runs near 592.5 cfs in July and 635 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 3,195 sq mi
- Gauge elevation
- 917 ft
- Subbasin (HUC-8)
- 17020006
- Coordinates
- 48.93072, -119.42034
- USGS site number
- 12439500
- Records begin
- 1942-10-01 (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 | 206.6 | 376.9 | 876.1 | |
| February | 196.9 | 452 | 1,070.2 | |
| March | 138 | 513.8 | 1,201.6 | |
| April | 175 | 635 | 1,584.3 | |
| May | 270 | 1,094.4 | 2,431.3 | |
| June | 195.5 | 947.8 | 2,660 | |
| July | 165.8 | 592.5 | 2,205.5 | |
| August | 191.5 | 429.2 | 1,442.9 | |
| September | 234.1 | 449.8 | 916 | |
| October | 286.5 | 460.7 | 732.6 | |
| November | 236.5 | 418.4 | 814.5 | |
| December | 212.8 | 361.9 | 792.7 |
All values in cubic feet per second (cfs).
Other gauges in this subbasin
- Antoine Creek at US Hwy 97 near Ellisforde, WA
- Bonaparte Creek at Tonasket, WA
- Okanogan River near Tonasket, WA
- Johnson Creek near Riverside, WA
- Omak Creek near Omak, WA
- North Fork Salmon Creek near Conconully, WA
- West Fork Salmon Creek near Conconully, WA
- Salmon Creek above Diversion near Okanogan, WA