Peakflow Forecasts Header

LONG TOM--FERN RIDGE DAM
   State:  Oregon    County:  LANE
   Latitude:  44 7' 24" North    Longitude:  123 17' 54" West
   Elevation:  374 feet
   Supporting WFO:  Portland    
   Inflow Data  

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.

LONG TOM--FERN RIDGE DAM   (FRNO3)
Forecasts for Water Year
2024
Ensemble Date: 2024-04-26
Forecast Period: April 26 to August 1
Exceedence
Probability
Inflow
CFS
Probable
Date of Peak
95 % 313 2024-04-26
90 % 313 2024-04-26
70 % 315 2024-04-29
50 % 394 2024-05-19
30 % 599 2024-05-27
10 % 1144 2024-06-13
05 % 1203 2024-06-29

Peakflow exceedence plot for FRNO3

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