Extent of Fishery Investigation 
On April 15, 1950, a co-operative fishery re- 
search program was started onLake Chautauqua by 
the Illinois Natural History Survey, the Illinois 
Department of Conservation, and the United States 
Fish and Wildlife Service. 
The purposes of this research program were 
(1) to determine the values of the sport and com- 
PAUL RIDDLE'S 
BOAT YARD 
(8 BOATS) 
PROMENADE ST. 
BURT SPERRY'S 
BOAT YARD 
(55 BOATS) 
mercial fisheries of an Illinois River bottomland 
lake; (2) to develop management practices that 
would increase the yield of sport and commercial 
fishes; (3) to study the biology of the fishes pres- 
ent; and (4) to estimate the dynamics of the 
fish population. 
This paper is a preliminary report based on a 
study of the sport fishery at Lake Chautauqua from 
April 15,1950, to October 25,1951. While the data 
Forest City > 
ROUTE IO AND 136 
Fig. 2. -- Location of Lake Chautauqua and boat yards at the lake. 
