Peakflow Forecasts Header

S YAMHILL--AT MCMINNVILLE
   State:  Oregon    County:  YAMHILL
   Latitude:  45 12' 20" North    Longitude:  123 10' 53" West
   Elevation:  62 feet
   Supporting WFO:  Portland    
   Action Stage:  45'   Flood Stage:  50'   Moderate Flood Stage:  56'
   Major Flood Stage:  59'

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.

S YAMHILL--AT MCMINNVILLE   (MCMO3)
Forecasts for Water Year 2025
Ensemble Date: 2025-07-12
 Forecast Period: July 12 to November 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 10.14 127 2025-09-22
90 % 10.35 154 2025-10-03
70 % 11.57 319 2025-10-18
50 % 13.11 571 2025-10-27
30 % 14.56 859 2025-10-30
10 % 20.88 2576 2025-11-01
05 % 24.57 3882 2025-11-01

Peakflow exceedence plot for MCMO3

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