Peakflow Forecasts Header

THOMAS CREEK--NEAR SCIO
   State:  Oregon    County:  LINN
   Latitude:  44 42' 43" North    Longitude:  122 46' 5" West
   Elevation:  380 feet    Gage Datum:  
   Supporting WFO:  Portland    
   Action Stage:  15.5'   Flood Stage:  18'   Moderate Flood Stage:  19'
   Major Flood Stage:  20'

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.

THOMAS CREEK--NEAR SCIO   (TRSO3)
Forecasts for Water Year 2025
Ensemble Date: 2025-07-15
 Forecast Period: July 15 to November 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 3.81 19 2025-07-15
90 % 4.00 32 2025-09-29
70 % 5.11 188 2025-10-21
50 % 6.17 504 2025-10-27
30 % 6.98 860 2025-10-31
10 % 9.62 2446 2025-11-01
05 % 13.21 6122 2025-11-01

Peakflow exceedence plot for TRSO3

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