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: 2025-05-12
 Forecast Period: May 12 to September 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 4.31 93 2025-05-12
90 % 4.31 93 2025-05-12
70 % 4.53 132 2025-05-30
50 % 5.40 363 2025-06-09
30 % 5.61 438 2025-06-16
10 % 6.03 600 2025-07-11
05 % 6.52 831 2025-08-15

Peakflow exceedence plot for NASW1

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