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Posts tagged Illinois

Climate Change Issues for Lake Michigan, USA

43.4N 87.2W

May 18th, 2013 Category: Climate Change, Lakes

USA – May 16th, 2013

Lake Michigan (left) is faced with climate change issues. First and foremost, there is concern over changing temperature and precipitation. This may cause lack of ice cover in winter and more evaporation. Warmer and drier conditions will strain water resources throughout NE Illinois. The majority of scenarios projected by scientists show a drop in lake levels.

Drought and Low Water Levels in the Mississippi River, USA

37.0N 89.1W

April 30th, 2013 Category: Climate Change, Rivers

USA – April 29th, 2013

For months along the Mississippi River here, the withering drought has caused record-breaking low water levels that have threatened to shut down traffic on the world’s largest navigable inland waterway.

The river has remained open  for shipping from Missouri to Illinois due to dredging, blasting and scraping away of rock obstructions along the riverbed, effectively lowering the bottom of the channel by two feet. Despite the success in keeping the Mississippi open, the effects of the low water can be seen up and down the river, both in reduced barge traffic and in the disarray caused by receding waters.

Sediments in Lake Michigan by Chicago, USA – November 29th, 2012

41.8N 87.6W

November 29th, 2012 Category: Image of the day, Lakes, Sediments

USA – November 28th, 2012

Lake Michigan is the only one of the Great Lakes wholly within the borders of the United States; the others are shared with Canada. Twelve million people live along its shores, mainly in the Chicago and Milwaukee metropolitan areas. Here, Chicago appears as a grey area on the southwestern shoreline. Sediments line the southern shores and can be seen by Chicago.

Lake Michigan has a surface area of 22,400 square miles (58,000 km2), making it the largest lake entirely within one country by surface area, and the fifth largest lake in the world.

Although only the southern half is visible here, the lake is 307 miles (494 km) long by 118 miles (190 km) wide with a shoreline 1,640 miles (2,640 km) long. The lake’s average depth is 46 fathoms 3 feet (279 ft; 85 m), while its greatest depth is 153 fathoms 5 feet (923 ft; 281 m). It contains a volume of 1,180 cubic miles (4,918 km³) of water.

Sediments Along Southern Shores of Lake Michigan, USA

41.8N 87.6W

January 8th, 2012 Category: Lakes

USA - December 26th, 2011

Sediments line the southern shores of Lake Michigan, one of the North American Great Lakes. In the full image, the entire lake is visible, and the northern shores are sediment free.

Lake Michigan is the only one of the Great Lakes that is located entirely within the United States. The city of Chicago, Illinois, USA, can be observed by the southwestern shores of the lake, appearing as a grey area.

Bridge Across Rend Lake, in Illinois, USA

38.1N 88.9W

January 21st, 2011 Category: Lakes

USA - December 26th, 2010

This ASAR image shows Rend Lake, a 13 mile- (20.9 km-) long, 3 mile- (4.8 km-) wide reservoir. It is located in southern Illinois, USA, in Franklin and Jefferson Counties near Benton. In the full image, Illinois Route 154 can be seen as a thin, light grey line bridging the lake horizontally, east-west.

The lake contains 18,900 acres (76 km²) of water, stores 185,000 acre feet (228,000,000 m3) of water, and supplies over 15 million gallons of water per day to 300,000 persons in over 60 communities.

The reservoir is up to 35 feet (10.7 m) deep, but its average depth is closer to 9.7 feet (3.0 m). Its elevation is 405 feet (123.4 m) above sea level.

Rend Lake is a reservoir, created when the United States Army Corps of Engineers dammed the Big Muddy River. The dam and lake were authorized in 1962, but the lake was not completely filled until March 1973.

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