RIVEH MILES FROy MOUTM OF YAKIMA BlVES 



AVERAGE WATER QUALITY IN YAKIMA RIVER 



SUMMER 1954-55 



COLUMBIA RIVER SURVEY DATA 



RIVER MILES FROM MOUTH OF 



AVERAGE WATER QUALITY IN YAKIMA RIVER 



SUMMER 1954 - 55 



COLUMBIA RIVER SURVEY DATA 



FIG. 18 



FIG. 19 



SN4KE RIVER AT BUHBANK 



4VERA0E MONTHLY VALUES — YEARS 1954 - 1956 



COLUMBIA RIVER SURVEY DATA 



WENATCHEE RIVER AT SLEEPY HOLLOW 



AVERAGE MONTMLf VALUES — P954 1956 



COLUMBIA RIVER SURVEY DATA 



FIG. 20 



FIG. 21 



38 



