COWLITZ − AT CASTLE ROCK (CASW1)
   State:  Washington
   County:  Cowlitz
   Latitude:  46 16' 30" North
   Longitude:  122 54' 47" West
   Elevation:  20 ft

   Supporting NWS Forecast Office: WFO Portland

   
Click for NWS Official River Forecasts for CASW1

   Action Stage:  
46 ft
   Flood Stage:  
48 ft
   Moderate Flood Stage:  
54 ft
   Major Flood Stage:  
57 ft
Daily Historical Statistics for June 01, 2023
Mean Stage: 35.13 ft  Mean Flow: 9710 cfs
Max Stage: 38.92 ft  Max Flow: 23400 cfs (1956)
Min Stage:  33.07 ft   Min Flow: 3630 cfs (1973)

Statistics based on water years: 1927-2021
* statistics estimated based on current rating

Record Stage: 
55.76 ft
Record Flow: 
139000 cfs
Date of Record: 
December 23, 1933

The 4-10 Day Trend Forecast is based on model guidance and uncertainty during this period is greater.

Hydrograph plot for CASW1


For Data Used In Plot   "label