700 



"Ssooh 



° 100 



Powerhouse Fish-locks 



Brodford Island Ladder 



Washington Shore Ladder 



— 1 1 1 1 — 



10 II 12 I 



Hour Counted 



8 



A.M. 



4 5 

 RM. 



Fig. 11 .—Comparison of Powerhouse Fish-locks with Bradford Island 

 Ladder counts and Washington Shore Ladder counts for • 

 total hourly counts from July 1 to 15, 1941 



