Electrofishing survey 30 May 1991 Page 16 



Figure 4. Weight-length relationsliips and Wr values of common carp taken 

 from the Upper Illinois Waterway in 1989 and 1990. SD = stand- 

 ard deviation of Wr values. 



Figure 5. Weight-length relationships and Wr values of channel catfish taken 

 from the Upper Illinois Waterway in 1989 and 1990. SD » stand- 

 ard deviation of Wr values. 



