ML071000471

Great Lakes Atlas Fact Sheet #1

ML071000471
Person / Time
Site:	FitzPatrick
Issue date:	03/09/2006
From:	Environmental Protection Agency
To:	Office of Nuclear Reactor Regulation
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The Great Lakes Atlas: Factsheet #1 Great Lakes Recent Additions l Contact Us l Print Version Search: EPA Home > Great Lakes

> The Great Lakes Atlas

> Factsheet No. 1 Chapter One Chapter Two

Chapter Three

Chapter Four

Chapter Five

Chapter Six Glossary Conversion Table

References

Sources for Maps Factsheet No. 1

Factsheet No 2

Factsheet No. 3 The Great Lakes An Environmental Atlas and Resource Book Great Lakes Factsheet No. 1 Physical Features And Population Superior Michigan Huron Erie Ontario Totals Elevation a (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 Depth a (feet)**

483 279 195 62 283 (metres) 147 85 59 19 86 Maximum Depth a (feet)* 1,332 925 750 210 802 (metres) 406 282 229 64 244 Volume a (cu. miles)*

2,900 1,180 850 116 393 5,439 (km 3) 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 (km 2) 82,100 57,800 59,600 25,700 18,960 244,160 Land Drainage Area b (sq. mi.)*

49,300 45,600 51,700 30,140 24,720 201,460 http://www.epa.gov/glnpo/atlas/gl-fact1.html (1 of 3)4/10/2007 2:41:36 PM The Great Lakes Atlas: Factsheet #1 Disclaimer Information herein is provided by the U.S.

EPA Great Lakes

National Program

Office. Its use and

reference is unlimited, upon condition that the

source is correctly

attributed. Thank you. (km 2) 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 (km 2) 209,800 175,800 193,700 103,700 82,990 765,990 Shoreline Length c (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)f 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: l a Measured at Low Water Datum.

l 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.

l c Including islands.

l 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: l

• Coordinating Committee on Great Lakes Basic Hydraulic and Hydrologic Data, Coordinated Great Lakes Physical Data. May, 1992 l ** Extension Bulletins E-1866-70 , Michigan Sea Grant College Program, Cooperative Extension Service, Michigan State

University, E. Lansing, Michigan, 1985 f 1990-1991 population census data were collected on different watershed boundaries and are not directly comparable to previous years.

http://www.epa.gov/glnpo/atlas/gl-fact1.html (2 of 3)4/10/2007 2:41:36 PM The Great Lakes Atlas: Factsheet #1 EPA Home l Privacy and Security Notice l Contact Us Last updated on Thursday, March 9th, 2006 URL: http://www.epa.gov/glnpo/atlas/gl-fact1.html http://www.epa.gov/glnpo/atlas/gl-fact1.html (3 of 3)4/10/2007 2:41:36 PM