Table 5. --Operative conditions and number of anadromous fish held in the attrac- 

 tion chamber at the Snake Island fishway, Potomac River, spring of 1963 



Date 



Operative conditions 



Water depth 

 transporta- 

 tion channel 



Time 

 oper- 

 ated 



8 a .m. 

 water 



temper- 

 ature 



Species held 



American 

 shad 



Striped 



bass 



Alewives 



White 

 perch 



Hickory 

 shad 



April 22 

 23 

 24 

 29 



April 30 



May 1 



2 



3 



4 

 5 

 6 

 7 

 8 



9 

 10 

 11 

 12 

 13 



14 

 15 



16 



17 



18 

 19 

 20 

 21 

 22 



23 



Inches 



46 

 45 

 45 

 30 

 14 



42 

 42 

 42 

 42 

 41 



41 



41 

 41 

 40 

 40 



40 

 40 

 40 

 39 

 39 



14 

 20 

 39 

 24 

 32 



36 

 40 

 40 

 40 

 40 



41 



Hours 



24 



24 



24 



1 



4 



19 

 24 

 24 

 24 

 24 



24 

 24 

 24 

 24 

 24 



24 

 24 

 24 

 24 

 24 



24 

 8 

 16 

 24 

 24 



17 

 19 

 24 

 24 

 24 



24 



15.6 

 16.1 

 16.1 

 16.1 

 16.1 



16.1 

 16.1 

 13.3 

 11.7 

 13.3 



14. i* 

 16.1 

 18.3 

 19.4 

 18.9 



20.6 

 20.6 

 20.0 

 20.0 

 20.6 



20.0 

 20.0 

 20.0 

 20.0 

 20.0 



20.0 

 20.0 

 20.6 

 20.6 

 20.6 



19.4 



Number 



4 

 4 

 4 

 3 

 3 



3 

 3 

 3 

 1 

 1 



1 

 1 

 1 



Number 



36 



43 

 43 

 41 

 31 



22 

 9 

 5 



4 

 1 



13 



13 



13 

 20 

 15 



Number 



21 

 18 

 18 

 16 

 16 



16 

 16 

 16 

 11 

 22 



10 

 11 

 15 



3 



1 



1 

 1 

 1 

 1 



Number 



12 

 12 

 12 

 14 

 14 



14 

 14 

 14 

 8 

 17 



11 

 10 



17 

 7 



Number 



11 



