Peakflow Forecasts Header

NACHES--NEAR NACHES
   State:  Washington    County:  YAKIMA
   Latitude:  46 44' 48" North    Longitude:  120 46' 5" West
   Elevation:  1550 feet
   Supporting WFO:  Pendleton    
   Action Stage:  16'   Flood Stage:  17.8'   Moderate Flood Stage:  19'
   Major Flood Stage:  
21'

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.

NACHES--NEAR NACHES   (NACW1)
Forecasts for Water Year
2024
Ensemble Date: 2024-03-27
Forecast Period: March 27 to July 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 15.69 4000 2024-04-15
90 % 15.77 4144 2024-04-23
70 % 16.15 4823 2024-05-08
50 % 16.56 5600 2024-05-16
30 % 16.89 6231 2024-05-20
10 % 17.50 7454 2024-06-05
05 % 17.94 8380 2024-06-19

Peakflow exceedence plot for NACW1

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