Peakflow Forecasts Header

MARYS--NEAR PHILOMATH
   State:  Oregon    County:  BENTON
   Latitude:  44 31' 35" North    Longitude:  123 19' 59" West
   Elevation:  224 feet
   Supporting WFO:  Portland    
   Action Stage:  16'   Flood Stage:  20'   Moderate Flood Stage:  21'
   Major Flood Stage:  
21.5'

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.

MARYS--NEAR PHILOMATH   (PHIO3)
Forecasts for Water Year
2025
Ensemble Date: 2025-07-06
Forecast Period: July 6 to November 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 2.23 29 2025-07-18
90 % 2.30 34 2025-08-11
70 % 3.11 96 2025-10-14
50 % 4.39 196 2025-10-26
30 % 5.19 281 2025-10-30
10 % 8.74 753 2025-11-01
05 % 9.81 926 2025-11-01

Peakflow exceedence plot for PHIO3

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