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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 2026
Ensemble Date: 2025-12-06
 Forecast Period: December 6 to April 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 10.23 3151 2025-12-11
90 % 10.23 3151 2025-12-11
70 % 10.61 3428 2025-12-20
50 % 12.08 4569 2026-01-09
30 % 13.51 5790 2026-01-27
10 % 19.12 11580 2026-02-26
05 % 20.55 13290 2026-03-13

Peakflow exceedence plot for NASW1

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