Peakflow Forecasts Header

CISPUS--NEAR RANDLE
   State:  Washington    County:  LEWIS
   Latitude:  46 26' 38" North    Longitude:  121 50' 28" West
   Elevation:  1260 feet
   Supporting WFO:  Seattle    

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.

CISPUS--NEAR RANDLE   (CIYW1)
Forecasts for Water Year
2026
Ensemble Date: 2025-11-15
Forecast Period: November 15 to March 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 14.68 1078 2025-11-16
90 % 14.86 1192 2025-11-21
70 % 16.52 2865 2025-12-10
50 % 16.90 3686 2026-01-02
30 % 17.83 6522 2026-01-26
10 % 18.60 9912 2026-02-17
05 % 19.01 12268 2026-02-24

Peakflow exceedence plot for CIYW1

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