CHARACTERISTICS AND DISTRIBUTION OF LAKKS 627 
Lake Nepissing, lying at an elevation of 644 feet, drains by 
French River to Georgian Bay, Lake Huron. 
Lake Simcoe, ^30 miles long by 18 miles broad, and 300 square 
miles in area, lies at an altitude of 701 feet, about 130 feet above 
Georgian Bay, into which it discharges through Lake Couchiching 
and the River Severn. 
Lake Temiscaming is practically the head of the River Ottawa, 
the largest tributary of the St Lawrence. The name Temiscaming 
means "deep water,"" and the lake is said to be very deep, though 
reliable soundings do not appear to have been made yet in its waters. 
It is 612 feet above sea-level, 75 miles in length, and from 1 to 
5 miles in breadth. 
The course of the Ottawa is interrupted by a succession of lakes 
and rapids, and falls from over 700 feet to about 60 feet above sea- 
level in drops of 150, 140, and 120 feet. Lac des Chats, on its 
course, is 50 miles long, and Lake Deschenes 25 miles long. 
Lake St John lies 278 feet above sea-level, about 100 miles 
N.N.W. of the city of Quebec, and occupies an almost circular basin 
28 miles long by 20 miles broad, with an area of 366 square miles. 
It drains to the St Lawrence estuary by the Saguenay River, the 
course of which is much interrupted by rapids. 
Summit Lake in Labrador has a double outflow, one by the 
Koksoak River to the north into Hudson's Strait, and the other by 
the Manicouagan River to the south, joining the St Lawrence west of 
Point de Monts, after a course interrupted by short reaches of lake and 
much broken water. It lies on the 53rd parallel of latitude, about 
1940 feet above sea-level. 
The Fox River flows into Green Bay, an arm of Lake Michigan, 
and receives the drainage of a large section of the north-eastern part 
of Wisconsin, an area covered with glacial drift. Connected with the 
river and its tributaries is a great number of lakes, many of which, 
although covering areas of considerable size, are merely expansions of 
the rivers, and are for the most part very shallow, with low, swampy 
shores. The deeper lakes are Stone Lake, with depths of 75 and 
80 feet in its deepest part ; the Waupaca Lakes, small in area but 
with a depth in some cases of 60 to 95 feet ; and Green Lake. 
Green Lake is a long, narrow body of water, covering an area of 
11 J square miles, slightly over 7 miles in length, and less than 2 miles 
in maximum width, with a maximum depth of 237 feet, and an 
average depth of over 100 feet. The water of the lake is of a clear 
green colour, and because of its depth there is a large body of water 
at the bottom which is never appreciably affected by even the 
severest storms. The lake has a distinct " thermocline during the 
summer months, and the water at the bottom has an annual range 
