Okanogan River Near Tonasket, WA

USGS Site No: 12445000Okanogan River • Okanogan County, WA

Okanogan River Near Tonasket, WA on the Okanogan River is currently at 5,400 cfs (Very High — 96th percentile for this date) . Gage height: 8.66 ft.

Reading from

5,400
CFS Discharge
8.66
Gage Height (ft)
Very High
Flow Condition
Normal
Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for July 29 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.

Percentile Label CFS Threshold Today's Flow
10th Very Low threshold 728
25th Low threshold 1,010
50th (Median) Normal (median) 1,810
75th High threshold 2,970
95th Very High threshold 5,050

30-Day Hydrograph

Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.

23k 12k 0 cfs Apr 5 May 28
10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date Discharge (CFS) Gage Ht (ft)
May 28, 2026 5,130 8.49
May 27, 2026 5,240 8.56
May 26, 2026 5,240 8.56
May 25, 2026 5,250 8.56
May 24, 2026 5,130 8.48
May 23, 2026 5,090 8.46
May 22, 2026 5,180 8.52
May 21, 2026 5,330 8.62
May 20, 2026 5,680 8.83
May 19, 2026 6,160 9.12
May 18, 2026 6,640 9.40
May 17, 2026 7,320 9.78
May 16, 2026 8,320 10.31
May 15, 2026 9,410 10.90
Apr 20, 2026 4,880 8.32
Apr 19, 2026 4,980 8.39
Apr 18, 2026 5,240 8.56
Apr 17, 2026 5,570 8.76
Apr 16, 2026 5,890 8.96
Apr 15, 2026 6,140 9.11
Apr 14, 2026 5,820 8.92
Apr 13, 2026 5,110 8.47
Apr 12, 2026 4,560 8.10
Apr 11, 2026 4,140 7.81
Apr 10, 2026 3,900 7.64
Apr 9, 2026 3,800 7.56
Apr 8, 2026 3,640 7.44
Apr 7, 2026 3,280 7.16
Apr 6, 2026 3,130 7.04
Apr 5, 2026 3,120 7.03

Station Information

USGS Site No
12445000
State
WA
Coordinates
48.6324, -119.4617
Drainage Area
7,260 mi²
Datum (ft)
860.8
HUC Code
17020006
View on USGS NWIS →

Flood Stage Thresholds

Action Stage
14.0 ft
Flood Stage
15.0 ft
Moderate Flood
17.0 ft
Major Flood
18.0 ft

Currently 6.34 ft below flood stage.

Recent Extremes

Max discharge
10,600 cfs
Dec 12, 2025
Min discharge
541 cfs
Sep 26, 2025
Days at flood stage
0

Computed from the local daily-values archive.

Nearby Gauges