Lake Michigan, also known as Lake Michigan, is the third largest of the five Great Lakes in North America and the only lake in the United States.
From the south along the coastClockwiseRank the following states in the United States:Indiana、Illinois、WisconsinandMichigan。The lake has a total area of 57757 square kilometers and an average water depth of 84 meters.The climate of the lake area is mild, and most of the lakeside areas are summer resorts.The east bank is rich in apples, pears and other fruits, the south bank is straight, the north bank is curved, and there are many good harbors.
North Michigan andHuron LakeIt is connected, 517 kilometers long from north to south, and 190 kilometers wide at the widest point,lake basinIt covers an area of nearly 120000 square kilometers, and the water area is 57757 square kilometers.
The lake is 177 meters above sea level, with an average depth of 84 meters. The deepest point is 281 meters, and the depth gradually decreases from north to south.lake waterStockfour thousand eight hundred and seventy-fiveCubic kilometer，Lakeside lineIt is 2100 km long.
There are about 100 small rivers flowing into Lake Michigan, with many islands at the north endBeaver IslandIs the maximum throughIllinois- Michigan Canal andMississippi Riverbe interlinked.
The land along the lake fluctuates gently.There are many cliffs eroded by lake waves.
The main ports of Lake Michigan areMilwaukee（Milwaukee）、Green Bay、Chicago, Michigan City, WaukeganKenosha （Kenosha）、Racine(Racine), Washington, ManitowocManisti（Manistee）、LattontonLudington, Muskegon, Port Grande and Benton Harbor, etc.Most of the lakeside areas are summer resorts for many tourists.
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The climate of the lake area is mild, and most of the lake banks are summer resorts.
There are cliffs eroded by lake waves along the lake shore, and sand dunes on the southeast coast, especially in the Indiana National Lakeside Area andstate park The sand dunes are the most famous.
There are many winding harbors and lakes on the north banktroutSalmon, fishing industry is flourishing.
From mid December to mid April of the next year, the harbor was iced and navigation was blocked, but the lake surface was rarely completely frozen. There were ferries between several ports throughout the year.The north bank is curved, and there are many good ports, mainlyLake HarborChicago, Milwaukee, etc.
The south bank is flat and straight, with many sand dunes and no natural port.The east coast is adjusted by the lake water, and it is not frozen in late spring and early autumn. The coast is rich in apples, peaches, pears and other fruits.
Great Lakes Region-The St. Lawrence River Channel passes through the lake, and there are international trade exchanges along the route.
The southern end is adjacent to the large industrial zone centered on Chicago (a large number of imports are made via Calumet, Gary, Indiana and Escanaba portsIron ore, coal and limestone).
Lake Michigan plans to transport water toresidence community。These waters can replace groundwater that is shrinking and seriously polluted.
The scheme includes connection from a separate line to Lake Michigan or from the processing plant in Manitowoc, and the final scheme is still under discussion.
whetherWater AuthorityIf Manitowoc scheme or Emerald Bay plan is adopted, the cost will be reduced.
According to the data released by the Brown County Water Authority, after the modification of the project plan, the cost of water transportation from Lake Michigan to the eight districts of Emerald Bay may decrease by 8.75 million dollars or more.
Water will be delivered to communities through a unique distribution system.The system is a network of pipeline lines that can be treated after the water arrives in Brown County and then transported to the community.
A reasonable plan will reduce the estimated cost of the original system from 55 million to 46.25 million.[1]
American scientists discovered in 2004 that sofaFoam plastic, carpet and clothmaterialPolybrominated diphenyl ether(PB DEs) unexpectedly ran to North AmericaThe Great LakesThe only lake in the water system that belongs to the United States is Lake Michigan.
Previously, scientists had detected polybrominated diphenyl ethers in women's milk and supermarket food. This time, fish was abundant[2]This is found in Lake MichiganToxic SubstancesIt has undoubtedly aroused people's great concern and concern.
Entrusted by the National Oceanic and Atmospheric Administration of the United States,University of WisconsinAfter three years of research, scientists from.An expert pointed out on November 24, 2004 that the content of PBDEs in the sludge at the bottom of Lake Michigan was one part per billion, equivalent to a drop of water in a swimming pool that can hold 10000 gallons of water.
Polybrominated diphenyl ethers areBrominationFlame retardant, widely used in plastics of household appliances, plastics in computersInterior decorationInFoam plastic, carpets, fabrics, sofas, etc.
The expert said that this chemical was used by fish and otherwild animal[3]After absorption, it will be deposited in their body fat. When people eat these meat, they will absorb it into their own body, which is harmful to the body.[4]
