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
2026
Ensemble Date: 2026-03-10
Forecast Period: March 10 to July 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 3.20 859 2026-03-14
90 % 4.18 1415 2026-03-24
70 % 4.64 1737 2026-03-30
50 % 5.40 2349 2026-04-08
30 % 5.92 2845 2026-04-18
10 % 10.03 8877 2026-05-22
05 % 11.52 12126 2026-06-04

Peakflow exceedence plot for POWO3

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