FISHING INDUSTRY OF THE GREAT LAKES 577 



SIZE LIMITS 



Wisconsin has no size limit for any species. Minnesota prohibits 

 the taking of whitefish or trout less than 16 inches in length and 

 wall-eyed pike smaller than 14 inches. The provincial law of On- 

 tario prohibits the taking of whitefish under 2 pounds in the round, 

 trout under 2 pounds in the round, herring under 6 ounces in the 

 round, wall-eyed pike under 15 inches, perch under 9 inches, and 

 sturgeon under 42 inches. The minima provided by Michigan laws 

 are as follows : Trout, 1 3^ pounds round or 1 3^ pounds dressed; white- 

 fish, 2 pounds round or 1 pound 10 ounces dressed; sturgeon 20 pounds 

 round; sucker 1 pound round; wall-eyed pike 13^ pounds round; 

 pike 2 pounds round; bullheads 8 ounces; and perch, 9 inches. 



CLOSED SEASONS 



Minnesota prohibits the taking of trout during November. Wis- 

 consin prohibits the capture of trout and whitefish during October. 

 Michigan protects trout from October 10 to November 4 and white- 

 fish from November 20 to December 15, but issues permits to fish 

 for spawn. Ontario has no closed season. 



The protective legislation is so variable that somewhere and at 

 some time it must miss its purpose. There is no protection for 

 herring, though Minnesota has signified a willingness to prohibit the 

 capture of herring during November, when the species spawns, if 

 Wisconsin will enact a similar law. The taking of chubs is pro- 

 hibited only in Minnesota, where they are protected when spawning 

 in November. 



LAKE HURON 



DESCRIPTION 



Lake Huron is situated in the center of the Great Lakes chain and 

 its waters lie about equally within the jurisdiction of the Province of 

 Ontario on the east and the State of Michigan on the west. It 

 receives the waters of Lake Superior through St. Marys River, and 

 those of Lake Michigan through the Straits of Mackinaw. It drains 

 southward through the St. Clair River, Lake St. Clair, and the 

 Detroit River into Lake Erie. Its greatest length, from the head of 

 the St. Clair River to the Straits of Mackinaw, is about 250 miles, and 

 the greatest width (near the middle) about 100 miles. Excluding 

 Georgian Bay and the North Channel, the lake has an area of approxi- 

 mately 17,500 square miles. 



Lake Huron is divided into two approximately equal areas by the 

 Big Reef, which extends continuously from Point Clark, Ont., to 

 North Point, Mich. North of the reef lie the deepest waters of the 

 lake. The 30-fathom contour is rarely more than 10 miles from shore, 

 and a considerable portion of the area lies within the 60-fathom curve. 

 The maximum depth of 125 fathoms known in the lake is found here. 

 The southern portion is shallower. Here depths of 30 fathoms and 

 less are more extensive and the maximum depth known is only 54 

 fathoms. The bottom alongshore is variable in character, consisting 

 of rocks, bowlders, gravel, sand, clay, and mud, irregularly dis- 

 tributed. The deeper waters overlie chiefly clay and mud. 



