Lake Michigan is one of the
five Great
Lakes
of North America, and
the only one located entirely within the United States
. The second largest of the Great Lakes by
volume and the third largest of the Great Lakes by surface area
(behind Lake
Superior
and Lake Huron
), it is bounded, from west to east, by the U.S. states of Wisconsin
, Illinois
, Indiana
, and
Michigan
. The
word "Michigan" was originally used to refer to the
lake itself, and is believed to come from the
Ojibwa Indian word
mishigami,
meaning "great water."
The lake is slightly smaller than the US
state of West
Virginia
.
History
Some of the earliest human inhabitants of the Lake Michigan region
were the
Hopewell Indians. Their
culture declined after 800 A.D., and for the next few hundred years
the region was the home of peoples known as the
Late Woodland Indians. In the early
seventeenth century, when western European explorers made their
first forays into the region, they encountered descendants of the
Late Woodland Indians: the
Chippewa,
Menominee,
Sauk,
Fox,
Winnebago,
Miami,
Ottawa, and
Potawatomi. It is believed that the French
explorer
Jean Nicolet was the first
non-Native American to discover Lake Michigan in 1634 or
1638.
After
Louis Jolliet, Jacques Marquette, and Robert de LaSalle explored the area in the
late 17th century, Lake Michigan became part of a line of waterways
leading from the Saint Lawrence River
to the Mississippi
River and thence to the Gulf of Mexico
. French coureurs
des bois and voyageurs established small ports and trading
communities, such as Green Bay
, on the lake during the late 17th and early 18th
centuries.
The first
permanent settlement on the Lake Michigan shoreline was made in
1779 at the site of present-day Chicago
by Jean Baptiste Point du Sable,
who had been born in Santo Domingo
.
The first person to reach the bottom of Lake Michigan was
J. Val Klump, a
scientist at the University of
Wisconsin-Milwaukee
. Klump reached the bottom via a
submersible as part of a 1985 research
expedition.
Geography
Lake
Michigan is the only one of the Great Lakes
wholly within the borders of the United States
; the others are shared with Canada
.
It has a
surface area of 22,400 square miles (58,016 km²), making it
the largest lake entirely within one country by surface area
(Lake
Baikal
, in Russia
, is larger
by water volume), and the fifth largest lake in the world.
It is 307 miles (494 km) long by 118 miles (190 km) wide
with a shoreline 1,640 miles (2,633 km) long. The lake's
average depth is 279 feet (85 m), while its greatest depth is 923
feet (281 m). It contains a volume of 1,180 cubic miles
(4,918 km³) of water.
Its surface averages 577 feet (176 m) above
sea level, the same as Lake
Huron
, to which it is connected through the Straits of
Mackinac
.
Cities
million people live along Lake Michigan's shores.
Many small cities in
Northern Michigan and Door County,
Wisconsin
are centered on a tourist
base that takes advantage of the beauty and recreational
opportunities offered by Lake Michigan. These cities have
large seasonal populations that arrive from nearby urban areas such
as the Chicago, Milwaukee and Detroit
areas, as well as from southern states, such as
Florida
and Texas
. Some
seasonal residents have summer homes along the lake shore, and
return home for the winter. The southern tip of the lake is heavily
industrialized. Cities on the shores of
Lake Michigan include:
| Illinois
Indiana
|
|
Michigan
|
|
Wisconsin
|
Connection to ocean and open water
The Saint Lawrence Seaway and Great Lakes Waterway opened the Great
Lakes to ocean-going vessels. The move to wider ocean-going
container ships — which do not fit through the locks on these
routes — has limited shipping on the lakes. Despite their vast
size, large sections of the Great Lakes freeze over in winter,
interrupting most shipping. Some icebreakers ply the lakes.
The Great Lakes are also connected to the Gulf of Mexico by way of
the Illinois River (from Chicago) and the Mississippi River. An
alternate track is via the Illinois River (from Chicago), to the
Mississippi, up the Ohio, and then through the Tennessee-Tombigbee
Waterway (combination of a series of rivers and lakes and canals),
to Mobile Bay and the Gulf. Commercial tug-and-barge traffic on
these waterways is heavy.
Pleasure boats can also enter or exit the Great Lakes by way of the
Erie Canal and Hudson River in New York. The Erie Canal connects to
the Great Lakes at the east end of Lake Erie (at Buffalo, NY) and
at the south side of Lake Ontario (at Oswego, NY).
Beaches
Lake Michigan beaches, especially those in Michigan and Northern
Indiana, are known for their beauty.
The region is often
referred to as the "Third Coast" of the
United States, after those of the Atlantic Ocean
and the Pacific Ocean
. The sand is soft and off-white, known as
"
singing sands" because of the
squeaking noise (caused by high
quartz
content) made when one walks across it. There are often high sand
dunes covered in green
beach
grass and
sand cherries, and the
water is usually clear and cool (between 55 and 80
°F [13 and 27
°C])
[2604], even in late summer. However, because
prevailing westerly winds tend to move the surface water toward the
east, there is a flow of warmer water to the Michigan shore in the
summer. Lake Michigan beaches in
Northern Michigan are the only place in
the world, aside from a few inland lakes in that region, where one
can find
Petoskey stones, the state
stone.
The beaches of the western coast and the northernmost part of the
east coast are rocky, while the southern and eastern beaches are
sandy and
dune-covered. This is partly because
of the prevailing winds from the west which also cause thick layers
of ice to build up on the eastern shore in winter.
Most of the Chicago city waterfront is parks. Where there are no
beaches or marinas then stone or concrete revetments protect the
shoreline from erosion. The rest of the lakefront is residential
developments in the north and south and ex-industrial sites in the
south.
Some environmental problems still plague the lake.
Steel mills are visible along the Indiana
shoreline, and the
pollution caused by
these mills is believed to contribute to the color of sunsets.
Also, the
Chicago Tribune reported
that BP is a major polluter, dumping thousands of
pounds of ammonia and raw sludge into Lake Michigan every day from
its Whiting,
Indiana
, oil refinery.
The Chicago
skyline can be seen from the
Indiana shore and lower Michigan (on a clear day), but when
standing on the beaches in Wisconsin and Illinois it is impossible
to see across the lake, providing a view similar to that of the
ocean. A view across the lake is possible from many buildings in
Chicago. It is possible from some of the taller buildings in
Chicago to clearly make out points in Indiana and Michigan such as
the
NIPSCO (Northern Indiana Public Service
Company) cooling tower of its power plant in Michigan City,
Indiana.
The
Great Lakes Circle Tour
is a designated scenic road system connecting all of the Great
Lakes and the St. Lawrence River.
Car ferries

300 px
can cross Lake Michigan by the
SS
Badger, a
ferry that runs from
Manitowoc,
Wisconsin
, to
Ludington, Michigan
.
The Lake
Express, established in 2004, carries motorists across the
lake between Milwaukee, Wisconsin
, and Muskegon, Michigan
.
Islands
- The
Beaver
Island
archipelago in Charlevoix
County, Michigan
, includes Beaver Island, Garden
Island
, Grape Island, Gull Island,
Hat Island, High
Island
, Hog Island
, Horseshoe Island, Little
Island, Pismire Island, Shoe Island, Squaw
Island
, Trout Island, and Whiskey Island.
- The
Fox
Islands
in Leelanau County, Michigan
, consist of North Fox Island and
South Fox
Island.
- The
Manitou Islands, North Manitou Island
and South Manitou Island
, are in Leelanau County, Michigan.
- Islands within Grand Traverse Bay
include Bassett Island, Bellow Island, and Marion
Island.
- Islands south of the Garden Peninsula in Delta
County, Michigan
include Gravelly Island, Gull Island, Little Gull Island
, Little Summer Island, Poverty Island, Rocky
Island, St. Martin
Island
, and Summer
Island.
- Islands in Big Bay de Noc
in Delta County, Michigan
include Round Island
, Saint Vital Island, and Snake Island.
- Islands in Little Bay de Noc
in Delta County, Michigan
include Butlers Island and Sand Island.
- Wilderness State Park
in Emmet County, Michigan
contains Temperance Island and Waugoshance
Island.
- Epoufette Island, Gravel Island, Little Hog
Island, and Naubinway Island are located in Mackinac
County, Michigan
, in the are of Epoufette,
Michigan
and Naubinway, Michigan
.
- Green Island and
St. Helena Island are in the
vicinity of the Mackinac Bridge
, in Mackinac County, Michigan
.
- Islands surrounding the Door Peninsula in Wisconsin
include Chambers
Island, Detroit
Island, Hog Island
, Pilot Island
, Plum Island
, Rock Island
, and Washington Island
.
- Northerly Island is a 91-acre
man-made island in Chicago. It is the home of the Adler
Planetarium
, the former site of Meigs Field
, and the current site of the temporary concert
venue Charter
One Pavilion
each summer.
- Other
islands include Fisherman Island
in Charlevoix County, Michigan
and Ile aux Galets
in Emmet County, Michigan
Parks
The
National Park Service
maintains the Sleeping Bear Dunes National
Lakeshore
and Indiana Dunes National
Lakeshore
. Parts of the shoreline are within the
Hiawatha National Forest
and the
Manistee National
Forest.
The Manistee National Forest section of the
shoreline includes the Nordhouse Dunes Wilderness
. The Lake Michigan division of the
Michigan Islands
National Wildlife Refuge is also within the lake.
There are numerous state parks located on the shores of the lake or
on islands within the lake. A partial list follows.

Saugatuck Dunes State Park
Lighthouses
Hydrology
The
Milwaukee Reef, running under Lake
Michigan from Milwaukee
to a point between Grand Haven
and Muskegon
, divides the lake into northern and southern
pools. Each pool has a clockwise flow of water, deriving
from rivers, winds, and the
Coriolis
effect. Prevailing westerly winds tend to move the surface
water toward the east, producing a moderating effect on the climate
of western Michigan. There is a mean difference in summer
temperatures of 5 to 10 degrees between the Wisconsin and Michigan
shores.
Hydrologically Michigan and Huron are the same body of water
(sometimes called
Lake
Michigan-Huron), but are geographically distinct. Counted
together, it is the largest fresh water body in the world by
surface area.
The Mackinac Bridge
is generally considered the dividing line between
them. Both lakes are part of the
Great Lakes Waterway. In earlier
maps of the region, the name
Lake
Illinois has been found in place of "Michigan".
Historic High WaterThe lake fluctuates from month
to month with the highest lake levels in October and November. The
normal highwater mark is above datum (
577.5 ft or 176.0
meters). In the summer of 1986, Lakes Michigan and Huron
reached their highest level at above datum.Monthly bulletin of Lake
Levels for The Great Lakes; September 2009; US Army Corps of
Engineers, Detroit District The high water records began in
February 1986 and lasted through the year, ending with January
1987. Water levels ranged from to above Chart Datum.
Historic Low WaterLake levels tend to be the
lowest in winter. The normal lowwater mark is below datum
(
577.5 ft or 176.0 meters). In the winter of 1964, Lakes
Michigan and Huron reached their lowest level at below datum. As
with the highwater records, monthly low water records were set each
month from February 1964 through January 1965. During this twelve
month period water levels ranged from to below Chart Datum.
Ecology
Lake Michigan is home to a variety of species of fish and other
organisms. It was originally home to
lake
trout,
yellow perch,
panfish,
largemouth
bass,
smallmouth bass,
carp,
bowfin, as well as some
species of
catfish. In recent years
overfishing has caused a decline in lake trout, ultimately causing
an increase in the
alewife population. As a
result,
coho and
chinook salmon were introduced as a predator
of alewives to decrease the alewife population. This program was so
successful that the salmon population exploded, and the states
surrounding Lake Michigan promoted
Salmon Snagging. This practice has since been made
illegal in all of the great lakes states with the exception of a
limited season in Illinois. Lake Michigan is now being stocked with
several species of fish. However, several invader species
introduced, such as
lampreys and mussels,
threaten the vitality of fish populations.
See also
Great Lakes in General
Notes
- http://www.great-lakes.net/lakes/michigan.html#overview
- Wikipedia - Lake Superior
- Wikipedia - Lake
Huron
- Bogue, Margaret Beattie (1985). Around the Shores of Lake
Michigan: A Guide to Historic Sites, pp. 7-13. University of Wisconsin Press.
ISBN 0299100049.
- Bogue (1985), pp. 14-16.
- Shelak, Benjamin J. (2003). Shipwrecks of Lake
Michigan p. 3. Big Earth Publishing. ISBN 1931599211.
- Shelak (2003), p. 85.
- Hilton, George Woodman (2002). Lake Michigan Passenger
Steamers, pp. 3-5. Stanford University Press. ISBN
0804742405.
- Register - New
- Great Lakes Circle Tour.
Further reading
- Hyde, Charles K., and Ann and John Mahan. The Northern
Lights: Lighthouses of the Upper Great Lakes. Detroit: Wayne
State University Press, 1995. ISBN 0814325548 ISBN
9780814325544.
- Oleszewski, Wes, Great Lakes Lighthouses, American and
Canadian: A Comprehensive Directory/Guide to Great Lakes
Lighthouses, (Gwinn, Michigan: Avery Color Studios, Inc.,
1998) ISBN 0-932212-98-0.
- Penrod, John, Lighthouses of Michigan, (Berrien
Center, Michigan: Penrod/Hiawatha, 1998) ISBN 9780942618785 ISBN
9781893624238
- Penrose, Laurie and Bill, A Traveler’s Guide to 116
Michigan Lighthouses (Petoskey, Michigan: Friede Publications,
1999). ISBN 0923756035 ISBN 9780923756031
- Wagner, John L., Michigan Lighthouses: An Aerial
Photographic Perspective, (East Lansing, Michigan: John L.
Wagner, 1998) ISBN 1880311011 ISBN 9781880311011
- Wright, Larry and Wright, Patricia, Great Lakes Lighthouses
Encyclopedia Hardback (Erin: Boston Mills Press, 2006) ISBN
1550463993
External links
- Lighthouses