Peakflow Forecasts Header

SF COQUILLE--AT POWERS
   State:  Oregon    County:  COOS
   Latitude:  42 53' 30" North    Longitude:  124 4' 9" West
   Elevation:  220 feet
   Supporting WFO:  Medford    
   Action Stage:  10'

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.

SF COQUILLE--AT POWERS   (POWO3)
Forecasts for Water Year
2025
Ensemble Date: 2025-05-12
Forecast Period: May 12 to September 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 1.18 172 2025-05-12
90 % 1.18 172 2025-05-12
70 % 1.18 172 2025-05-12
50 % 1.47 252 2025-05-27
30 % 3.07 798 2025-06-03
10 % 4.22 1431 2025-06-13
05 % 7.09 4180 2025-06-20

Peakflow exceedence plot for POWO3

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