|
.
Great
Lakes Fact Sheet
Physical Features And
Population
|
|
Superior
|
Michigan
|
Huron
|
Erie
|
Ontario
|
Totals
|
|
Elevationa
|
(feet)**
|
600
|
577
|
577
|
569
|
243
|
|
|
(metres)
|
183
|
176
|
176
|
173
|
74
|
|
|
Length
|
(miles)*
|
350
|
307
|
206
|
241
|
193
|
|
|
(kilometres)
|
563
|
494
|
332
|
388
|
311
|
|
|
Breadth
|
(miles)*
|
160
|
118
|
183
|
57
|
53
|
|
|
(kilometres)
|
257
|
190
|
245
|
92
|
85
|
|
|
Average
Deptha
|
(feet)**
|
483
|
279
|
195
|
62
|
283
|
|
|
(metres)
|
147
|
85
|
59
|
19
|
86
|
|
|
Maximum
Deptha
|
(feet)*
|
1,332
|
925
|
750
|
210
|
802
|
|
|
(metres)
|
406
|
282
|
229
|
64
|
244
|
|
|
Volumea
|
(cu.
miles)*
|
2,900
|
1,180
|
850
|
116
|
393
|
5,439
|
|
(km3)
|
12,100
|
4,920
|
3,540
|
484
|
1,640
|
22,684
|
|
Water
Area
|
(sq.
mi.)*
|
31,700
|
22,300
|
23,000
|
9,910
|
7,340
|
94,250
|
|
(km2)
|
82,100
|
57,800
|
59,600
|
25,700
|
18,960
|
244,160
|
|
Land
Drainage Areab
|
(sq.
mi.)*
|
49,300
|
45,600
|
51,700
|
30,140
|
24,720
|
201,460
|
|
(km2)
|
127,700
|
118,000
|
134,100
|
78,000
|
64,030
|
521,830
|
|
Total
Area
|
(sq.
mi.)*
|
81,000
|
67,900
|
74,700
|
40,050
|
32,060
|
295,710
|
|
(km2)
|
209,800
|
175,800
|
193,700
|
103,700
|
82,990
|
765,990
|
|
Shoreline
Lengthc
|
(miles)*
|
2,726
|
1,638
|
3,827
|
871
|
712
|
10,210d
|
|
(kilometres)
|
4,385
|
2,633
|
6,157
|
1,402
|
1,146
|
17,017d
|
|
Retention
Time
|
(years)**
|
191
|
99
|
22
|
2.6
|
6
|
|
|
Population:
|
U.S.
(1990)†
|
425,548
|
10,057,026
|
1,502,687
|
10,017,530
|
2,704,284
|
24,707,075
|
|
Canada
(1991)
|
181,573
|
-
|
1,191,467
|
1,664,639
|
5,446,611
|
8,484,290
|
|
Totals
|
607,121
|
10,057,026
|
2,694,154
|
11,682,169
|
8,150,895
|
33,191,365
|
|
Outlet
|
St. Marys
River
|
Straits
of Mackinac
|
St. Clair
River
|
Niagara
River
& Welland Canal
|
St.
Lawrence River
|
|
Notes:
·
a Measured at Low Water Datum.
·
b Land Drainage Area for Lake Huron includes St.
Marys River.
Lake Erie includes the St.
Clair-Detroit system.
Lake Ontario includes the
Niagara River.
·
c Including islands.
·
d These totals are greater than the sum of the
shoreline length for the lakes
because they include the
connecting channels (excluding the St. Lawrence River).
Sources:
·
* Coordinating Committee on Great Lakes Basic Hydraulic and
Hydrologic Data,
Coordinated Great Lakes
Physical Data. May, 1992
·
** Extension Bulletins E-1866-70, Michigan Sea
Grant College Program, Cooperative
Extension Service, Michigan
State University, E. Lansing, Michigan, 1985
† 1990-1991
population census data were collected on different watershed
boundaries and are not directly comparable to previous years.
Source: http://www.on.ec.gc.ca/great-lakes-atlas/intro.html
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