Peakflow Forecasts Header

METHOW--AT WINTHROP
   State:  Washington    County:  OKANOGAN
   Latitude:  48 28' 0" North    Longitude:  120 10' 0" West
   Elevation:  1718 feet
   Supporting WFO:  Spokane    

Forecasts are calculated from a forecast time series that approximates flow at a 6 hour time step interval. Observed instantaneous peaks can be higher than model forecast peaks.

METHOW--AT WINTHROP   (WTHW1)
Forecasts for Water Year
2025
Ensemble Date: 2025-07-02
Forecast Period: July 2 to November 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 10.83 636 2025-07-02
90 % 10.83 636 2025-07-02
70 % 10.83 636 2025-07-02
50 % 10.83 636 2025-07-02
30 % 10.94 704 2025-10-02
10 % 11.34 972 2025-10-30
05 % 11.67 1265 2025-11-01

Peakflow exceedence plot for WTHW1

 Click to download runoff traces used in forecast.  Click for comma delimited data used in plot.csv icon