Peakflow Forecasts Header

CLACKAMAS--THREE LYNX
   State:  Oregon    County:  CLACKAMAS
   Latitude:  45 7' 30" North    Longitude:  122 4' 19" West
   Elevation:  1120 feet
   Supporting WFO:  Portland    

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.

CLACKAMAS--THREE LYNX   (TLYO3)
Forecasts for Water Year
2027
Ensemble Date: 2026-10-15
Forecast Period: October 15 to February 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 4.04 3702 2026-11-22
90 % 4.96 5007 2026-11-25
70 % 5.82 6399 2026-12-09
50 % 7.30 9317 2026-12-31
30 % 8.83 12898 2027-01-10
10 % 10.62 17790 2027-01-27
05 % 12.53 23810 2027-01-30

Peakflow exceedence plot for TLYO3

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