COWLITZ − NEAR KOSMOS (COKW1)
   State:  Washington
   County:  Lewis
   Latitude:  46 27' 58" North
   Longitude:  122 7' 5" West
   Elevation:  780 ft

   Supporting NWS Forecast Office: WFO Seattle

   
Click for NWS Official River Forecasts for COKW1
   

Daily Historical Statistics for February 19, 2026
Mean Stage: 68.75 ft  Mean Flow: 5860 cfs
Max Stage: 77.62 ft  Max Flow: 26100 cfs (1981)
Min Stage:  65.49 ft   Min Flow: 1710 cfs (2001)

Statistics based on water years: 1948-2022
* statistics estimated based on current rating

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

Hydrograph plot for COKW1

Data Used In Plot   "label   ---


Hydrograph plot for COKW1

Data Used In Plot   "label   USGS Observations