FISHERY INDUSTRIES OF THE UNITED STATES, 1927 545 



to 2J^ miles or more wide, in the river behind the dam. This lake 

 has been named Lake Keokuk. 'Farther up the river, about 400 miles 

 from Lake Keokuk, the Mississippi River widens, and a natural body 

 of water is formed, which is known as Lake Pepin. These two lakes 

 have been subjected to extensive biological and ecological experi- 

 ments and investigations during late years, and for this reason statis- 

 tics of their fisheries are of more than ordinary interest. Presented 

 herewith are detailed statistics for 1927 and comparative statistics 

 for the years 1914, 1917, 1922, and 1927. For further data on the 

 fisheries of Lakes Pepin and Keokuk, the reader is referred to a 

 Bureau of Fisheries publication now in press, entitled "Keokuk 

 Dam and the fisheries of the upper Mississippi River," by Robert 

 E, Coker. 



Fisheries of Lake Keokuk, 1927 



OPEKATING UNITS AND CATCH: By gear 



1 Exclusive of duplication. 



Fisheries of Lake Pepin, 1927 

 OPERATING UNITS AND CATCH: By gear 



1 Exclusive of duplication. 



