AREAI-Mouth of Columbio R. thru Klickitot R.,WqsI?.\ 

 AREA E-Mouth of Columbia R. to Deschutes R.Oregon. 

 ^REAm- Above Klickitat R. to Grand Coulee Dam, Wash? 

 AREAH-Deschutes R. to Snake R. 

 AREA l-Snake R., mouth thru Grande Ronde R. 

 AREAM-Snoke R., above Grande Ronde R. thru Payette R. 

 AREACT-Snake R., above Payette R. to Upper Salmon Falls 



COLUMBIA 



RIVER 



SYSTEM 



SCALE 



40 20 O 50 



w 1-a 



Figure 1." ColumViia River System 

 1 



