408 U. S. BUREAU OF FISHERIES 
Comparison by lakes of the statistics of the Great Lakes, including Lake of the Woods, 
as obtained from State reports and as canvassed by the Bureau of Fisheries for the 
years 1917 and 1922 (expressed in thousands of pounds; that is, 000 omitted) 








1917 | 1922 
Lakes U8. 2 U.S. 
States Bureau of | States Bureau of 
Fisheries Fisheries 
Qnitario.{. 22-22) teed Fe ae tered Se Pie oe See 656 1,054 | 889 1,026 
Y= 2252 0b cee ee ee a ae a eee | 41, 416 38, 710 40, 912 55, 078 
Baron. 52522 52 ee eee ee 12, 512 13, 363 | 13, 481 13, 942 
Michigan 22 ete ea See ee ies bee eee) 29, 317 35, 381 | 16, 605 21,056 
Superior a a4 ae ae oe er ee ee ne Ae, 9, 889 15, 547 6, 569 10, 988 
Woods! 22. Gassete cle sane ah ee ee de ee | 2, 103 1,099 | 978 1, 438 
Totaliestc- Sees Isbis ak ART eerd ea te, Fee 95, 893 105, 154 79, 434 103, 528 

GENERAL STATISTICS 
The Great Lakes, with their cisco, trout, whitefish, herring, and 
pike fisheries, constitute one of our important fishery sections. 
While the total yield is considerably less than in some other fishery 
sections, the value is unusually high in proportion. The total yield 
of this fishery in the United States and Canada in 1913 was 102,- 
826,000 pounds. The high peak was reached in 1918, with a produc- 
tion of 149,523,000 pounds, and then followed a decline to 100,289,000 
pounds in 1925. Considered alone, the yield in the United States 
was 68,309,000 pounds in 1913, reached the high peak of 108,948,000 
pounds in 1915, and then declined to 69,132,000 pounds in 1925. The 
Canadian catch, which was only about one-half as large as the 
United States catch, followed a similar course, but which was less 
pronounced. 
Yield by lakes—Considered separately, the total yield by lakes 
shows varying tendencies during the period 1913 to 1925. The Lake 
Erie yield, which always has ranked first in amount, shows a down- 
ward tendency since 1913. This condition is reflected especially in the 
American catch, while that for Canada has remained fairly stable. 
The catch in Lake Michigan, which is taken entirely in American 
waters and which usually ranks second in amount, also shows a down- 
ward trend. The yield of Lake Huron, which usually ranks third in 
amount, also shows a tendency downward. As the Canadian catch 
in this lake has been fairly uniform, the decrease is due to the smaller 
catch in American waters. 
The yield of Lake Superior (fourth in importance as to amount, 
and which reached its peak in 1918) suffered a decline until 1922 but 
now seems to be growing. This condition is due largely to the 
gradually increasing catch in American waters in the face of the 
somewhat diminishing catch in Canadian waters. The yield of Lake 
Ontario (fifth in importance in amount) increased until 1921 and 
since that year has shown a decline, which is reflected in the fisheries 
of both American and Canadian waters. The yield of Lake of the 
Woods, which usually is of least importance, as to amount, in the 
international Lakes, registered a decline from 1917 to 1921. From 
that year until 1925 the yield increased markedly, with that of 1925 
being nearly as great as that of 1915 and greater than that for Lake 
