Okanogan River near Tonasket, WA

The last 7 days and the forecast

NWS forecast issued Mon, Oct 12, 8:43 AM. Forecasts change as rain falls and as upstream water arrives.

Flood stages

What floods at each level

From the National Weather Service, highest first.

• 22 ftSevere flooding of surrounding cropland is likely. Damage is possible to numerous homes, outbuildings, irrigation systems and roads adjacent to the river. Water will be over Highway 97 near Ellisford and other areas between Tonasket and Oroville.
• 19.5 ftBuildings along the river on Brooks Tract Road in East Omak will be flooded and utilities will be impacted.
• 19 ftWater may be into homes along the river in and near Tonasket. Water will start to come over the banks at Brooks Track Rd in East Omak.
• 18 ftWater will be approaching homes along the river in and near Tonasket. Major flooding of surrounding cropland is likely. Some homes and buildings adjacent to the river will experience some basement and first floor flooding.
• 17 ftLow lying fields and pasture land in the flood plain along the Okanogan river valley, from Oroville to Okanogan, will be flooded. Some homes near the river in Okanogan may experience some basement flooding from seepage. Water will be between the railroad and Highway 97 near Ellisford to south Oroville. Water will be against the shoulder of Omak River Road across from Wanacut Creek.
• 16 ftPasture land between Rodeo Track Road and Benton Street, on the east side of the river near Omak, will begin to flood. Flooding increases between Tonasket and Oroville.
• 15.5 ftMinor flooding in low lying areas and pasture lands is likely from Omak to Tonasket, especially near Ellisford.
• 15 ftMinor flooding of low lying areas and pasture lands is possible between Highway 7 and 97 from Oroville to Riverside.

Highest crests on record

1. 22.54 ft — June 2, 1972
2. 21.79 ft — May 31, 1948
3. 19.71 ft — May 12, 2018
4. 18.79 ft — June 19, 1974
5. 18.66 ft — June 18, 1950

Recent crests: 10.61 ft (May 18, 2024) · 14.38 ft (May 7, 2023) · 14.15 ft (June 7, 2022) · 15.48 ft (November 17, 2021) · 15.81 ft (June 2, 2020)

Up and down the river, and nearby

• UpstreamOkanogan River at Oroville, WA
• DownstreamOkanogan River at Malott, WA
• Bonaparte Creek at Tonasket, WA
• North Fork Salmon Creek near Conconully, WA
• West Fork Salmon Creek near Conconully, WA
• Salmon Creek near Okanogan, WA
• Omak Creek near Omak, WA
• Ninemile Creek near Oroville, WA
• Similkameen River near Nighthawk, WA