From a study of figures 5;, 6^ and 7 and the graphs for the other 

 years^, it appeared that the later the peak flow was reached at the dam, 

 the later the fish began to appear in numbers in the fishwayso The shades 

 as measured by the counts.^, appeared to be early when the river flow 

 dropped early and when the water temperature warmed earlyo When the xjater 

 flow was iiigh and temperature low the runs tended to be later in passing 

 through the fishwaySo 



To test this hypothesis ^ table 2 was prepared, showing for each 

 year the date when the water flow dropped below and stayed below 325s, 000 

 cfoSo (arbitrarily selected), the date the water temperature raised to 

 and stayed above 6o* F, (also arbitrarily selected)^ and the time of run 

 as indicated by the date when half the run was counted^ 



Table 2„ ■= Time of Borjieville shad passage compared xjith flow and tempera- 

 tures (figures in parentheses give number of days after May 31) • 



