80 



160 



." s 



TEMPERATURE OF LAKE MERWIN. 1938-39 



PREFftREO FROM DATA IN REFERENCEC221 



o LEWIS RIVER TEMP. UPSTREAM FROM RESERVOIR 



OF GAUGING STATION ABOVE COUGAR 



5 £ 



WATER TEMPERATURE - 

 10 12 



FIG. 36 



FIG. 37 



6I4 



