Peakflow Forecasts Header

S UMPQUA--AT TILLER
   State:  Oregon    County:  DOUGLAS
   Latitude:  42 55' 48" North    Longitude:  122 56' 48" West
   Elevation:  1040 feet
   Supporting WFO:  Medford    
   Action Stage:  16'   Flood Stage:  18'   Moderate Flood Stage:  21'
   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.

S UMPQUA--AT TILLER   (TILO3)
Forecasts for Water Year 2026
Ensemble Date: 2026-06-10
 Forecast Period: June 10 to October 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 1.24 156 2026-06-10
90 % 1.24 156 2026-06-10
70 % 1.24 156 2026-06-10
50 % 1.69 281 2026-06-30
30 % 2.09 420 2026-08-28
10 % 2.71 682 2026-09-27
05 % 3.80 1270 2026-09-29

Peakflow exceedence plot for TILO3

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