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: 2025-07-14
Forecast Period: July 14 to November 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 0.35 22 2025-07-23
90 % 0.51 38 2025-09-04
70 % 1.33 210 2025-10-12
50 % 2.86 713 2025-10-24
30 % 3.16 840 2025-10-29
10 % 4.46 1594 2025-11-01
05 % 5.72 2626 2025-11-01

Peakflow exceedence plot for POWO3

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