-•^ J^ 



j^l^yi'fia* m iMiL m 



STA. 16 - COLIIMBIA RIVER AT PASCO 



STA. 13 - COLUMBIA RIVER AT McNARY DAM 



STA. 17 - YAKIMA RIVER AT ENTERPRISE 



,-^f -"^ 



STA. Ih - SNAKE RIVER NEAR MOUTH 



PLATE I 



