Peakflow Forecasts Header

NASELLE--NEAR NASELLE
   State:  Washington    County:  PACIFIC
   Latitude:  46 22' 25" North    Longitude:  123 44' 36" West
   Elevation:  24 feet
   Supporting WFO:  Portland    
   Action Stage:  14'   Flood Stage:  15'   Moderate Flood Stage:  16'
   Major Flood Stage:  
17'

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.

NASELLE--NEAR NASELLE   (NASW1)
Forecasts for Water Year
2025
Ensemble Date: 2025-06-30
Forecast Period: June 30 to October 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 3.93 43 2025-06-30
90 % 3.93 43 2025-06-30
70 % 4.07 58 2025-08-24
50 % 4.43 112 2025-09-14
30 % 4.92 219 2025-09-24
10 % 5.61 438 2025-09-30
05 % 6.40 767 2025-10-01

Peakflow exceedence plot for NASW1

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