Peakflow Forecasts Header

TRASK--TILLAMOOK
   State:  Oregon    County:  TILLAMOOK
   Latitude:  45 26' 23" North    Longitude:  123 43' 5" West
   Elevation:  50 feet
   Supporting WFO:  Portland    
   Action Stage:  15'   Flood Stage:  16.5'   Moderate Flood Stage:  19'
   Major Flood Stage:  22'

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.

TRASK--TILLAMOOK   (TRAO3)
Forecasts for Water Year 2025
Ensemble Date: 2025-05-15
 Forecast Period: May 15 to September 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 6.48 257 2025-05-17
90 % 6.48 257 2025-05-17
70 % 6.51 268 2025-05-28
50 % 6.87 410 2025-06-07
30 % 7.64 822 2025-06-11
10 % 8.40 1336 2025-06-29
05 % 9.43 2214 2025-07-15

Peakflow exceedence plot for TRAO3

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