Asotin County Rivers
Name (# of Reports) Last Update Location
Grande Ronde River (10) 12-31-2007 Colville, OR
 

Clark County Rivers
Name (# of Reports) Last Update Location
Washougal River (1) 2-20-2018  
 

Cowlitz County Rivers
Name (# of Reports) Last Update Location
Columbia River (80) 8-7-2018  
Cowlitz River (1) 5-17-2013  
Kalama River (3) 2-25-2018  
 

Pierce County Rivers
Name (# of Reports) Last Update Location
Puyallup River (3) 9-26-2013  
 

Skagit County Rivers
Name (# of Reports) Last Update Location
Cascade River (1) 1-3-2013  
 

Skamania County Rivers
Name (# of Reports) Last Update Location
Washougal River (1) 2-20-2018  
Wind River (2) 9-10-2013  
 

Walla Walla County Rivers
Name (# of Reports) Last Update Location
Snake River (10) 4-26-2018