Peakflow Forecasts Header

CLACKAMAS--AT ESTACADA
   State:  Oregon    County:  CLACKAMAS
   Latitude:  45 18' 0" North    Longitude:  122 21' 10" West
   Elevation:  297 feet
   Supporting WFO:  Portland    
   Action Stage:  18'   Flood Stage:  20'   Moderate Flood Stage:  23'
   Major Flood Stage:  25'

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.

CLACKAMAS--AT ESTACADA   (ESTO3)
Forecasts for Water Year 2025
Ensemble Date: 2025-07-01
 Forecast Period: July 1 to November 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 11.73 1092 2025-07-20
90 % 11.85 1196 2025-09-25
70 % 12.30 1684 2025-10-15
50 % 12.96 2602 2025-10-25
30 % 13.43 3428 2025-10-29
10 % 14.85 6607 2025-11-01
05 % 17.62 15198 2025-11-01

Peakflow exceedence plot for ESTO3

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