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AREAI-Mouth of Columbia R. thru Klickitat R.,Wasl?> 

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

 ^_REA in- Above Klickitat R. to Grand Coulee Dam, Wash> 



AREAE-Deschutes R. to Snake R. 



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

 AREA'SI-Snake R., above Grande Ronde R. thru Payette R. 

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



m. 



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COLUMBIA 



RIVER 



SYSTEM 



SCALE 



50 



125 MILFS 



Flr.wre 1. — Columbia River System 



