The Okanogan River is a 115-mile-long river that flows through Okanogan County in Washington state.
Total streamflow across the
Okanogan River
was last observed at
5,136
cfs, and is expected to yield approximately
10,187
acre-ft of water today; about 100%
of normal.
Average streamflow for this time of year is
5,111 cfs,
with recent peaks last observed
on
2018-05-12 when daily discharge volume was observed at
69,180 cfs.
Maximum discharge along the river is currently at the
Okanogan River At Malott
reporting a streamflow rate of 2,460 cfs.
However, the streamgauge with the highest stage along the river is the
Okanogan River At Oroville
with a gauge stage of 6.41 ft.
This river is monitored from 3 different streamgauging stations along the Okanogan River, the highest being situated at an altitude of 887 ft, the
Okanogan River At Oroville.
| Last Updated | 2025-11-17 |
| Discharge Volume | 10,187 ACRE-FT |
| Streamflow |
5,136.0 cfs
+360.0 cfs (+7.54%) |
| Percent of Normal | 100.48% |
| Maximum |
69,180.0 cfs
2018-05-12 |
| Seasonal Avg | 5,111 cfs |
| Streamgauge | Streamflow | Gauge Stage | 24hr Change (%) | % Normal | Minimum (cfs) | Maximum (cfs) | Air Temp | Elevation |
|---|---|---|---|---|---|---|---|---|
|
Okanogan River At Oroville
USGS 12439500 |
376 cfs | 6.41 ft | 0 | |||||
|
Okanogan River Near Tonasket
USGS 12445000 |
2300 cfs | 6.3 ft | -12.88 | |||||
|
Okanogan River At Malott
USGS 12447200 |
2460 cfs | 4.49 ft | 39.77 |
The Okanogan River (known as the Okanagan River in Canada) is a tributary of the Columbia River, approximately 115 mi (185 km) long, in southern British Columbia and north central Washington. It drains a scenic plateau region called the Okanagan Country east of the Cascade Range and north and west of the Columbia, and also the Okanagan region of British Columbia. The Canadian portion of the river has been channelized since the mid-1950s.