Images related to Water Quality Monitoring

Great Lakes, No Clouds
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Great Lakes, No Clouds

Late August 2010 provided a rare satellite view of a cloudless summer day over the entire Great Lakes region of North America.

Published Sep 7, 2010

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How Glaciers Turn Lakes Turquoise
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How Glaciers Turn Lakes Turquoise

Fine particles of pulverized rock absorb and scatter sunlight in ways that can give water a striking blue-green color.

Published May 20, 2019

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Australia’s Disappearing Lakes Disappear Even More
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Australia’s Disappearing Lakes Disappear Even More

The Menindee Lakes in New South Wales are facing extremely low water levels.

Published Feb 26, 2019

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Beysehir and Egirdir
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Beysehir and Egirdir

Two of the largest freshwater lakes in Turkey sit on the Anatolia Plateau.

Published Jan 26, 2020

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Toshka Lakes, Southern Egypt
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Toshka Lakes, Southern Egypt

Between 2002 and 2012, water levels dropped significantly in these manmade lakes in the Sahara.

Published Jul 16, 2012

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Jewel-Toned Lakes of the Qinghai-Tibet Plateau
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Jewel-Toned Lakes of the Qinghai-Tibet Plateau

Acquired November 10, 2010, this natural-color image shows assorted lakes of the Qinghai-Tibet Plateau in iridescent hues of blue, green, and teal.

Published Nov 26, 2010

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Minnesota: Land of the Many-Colored Lakes
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Minnesota: Land of the Many-Colored Lakes

When leaves, roots, or bark disintegrates in water, that changes the color of a river or lake, much like a adding a teabag to hot water.

Published Oct 25, 2016

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Great, Warm Lakes
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Great, Warm Lakes

Just a few months after an unusually warm winter with minimal ice, the surface temperatures of the lakes are now near or above records.

Published Jul 16, 2020

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Toshka Lakes, Egypt
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Toshka Lakes, Egypt

In the late 1990s, Egypt’s new manmade Toshka Lakes, fed from Lake Nasser via a canal, grew and spilled into new basins to become four major and two smaller lakes. Starting in 2002, astronauts have seen the lakes slowly decline, with the telltale ring of darker, moistened ground showing the previous higher water levels.

Published Jul 7, 2008

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Volcanic Mood Rings
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Volcanic Mood Rings

Kelimutu volcano is home to the unique crater lakes known to change color unpredictably.

Published Jul 6, 2018

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Floods along the Yangtze River
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Floods along the Yangtze River

Acquired June 23, 2011, and May 26, 2011, these false-color images show changes in Dongting and Poyang Lakes, comparing drought to flood conditions.

Published Jun 23, 2011

Floods

Ounianga Lakes, Sahara Desert, Chad
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Ounianga Lakes, Sahara Desert, Chad

This astronaut photograph features one of the largest of a series of ten mostly fresh water lakes in the Ounianga Basin in the heart of the Sahara Desert of northeastern Chad.

Published Nov 30, 2009

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Decreasing Water Levels in Egypt’s Toshka Lakes
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Decreasing Water Levels in Egypt’s Toshka Lakes

Nearly six years of regional drought and rapidly increasing demand for water have resulted in decreasing water levels in lakes throughout East Africa. The flooded regions of the Toshka Lakes west of Lake Nasser have decreased greatly over the years, exposing the former dune fields, and leaving a “bath-tub ring” of wetlands (dark region) surrounding the lake shorelines.

Published Jan 9, 2006

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