Peakflow Forecasts Header

N UMPQUA--AT WINCHESTER
   State:  Oregon    County:  DOUGLAS
   Latitude:  43 16' 4" North    Longitude:  123 24' 33" West
   Elevation:  372 feet
   Supporting WFO:  Medford    
   Action Stage:  18'   Flood Stage:  26'   Moderate Flood Stage:  30'
   Major Flood Stage:  31'

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.

N UMPQUA--AT WINCHESTER   (WNRO3)
Forecasts for Water Year 2025
Ensemble Date: 2025-05-14
 Forecast Period: May 14 to September 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 3.77 2873 2025-05-19
90 % 3.77 2873 2025-05-19
70 % 3.77 2881 2025-05-24
50 % 4.15 3476 2025-06-02
30 % 4.91 4858 2025-06-07
10 % 6.13 7606 2025-06-12
05 % 6.95 9817 2025-06-18

Peakflow exceedence plot for WNRO3

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