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Posts tagged Grand Canyon

Changing Water Levels in Lakes Mead and Powell, USA

36.0N 112.1W

November 2nd, 2012 Category: Lakes, Rivers

USA – October 27th, 2012

Visible amidst the dry, rocky terrain of the western USA are lakes, rivers and gorges. By the left edge is the three-pronged Lake Mead, the largest reservoir in the United States in maximum water capacity. However, the lake has not reached this capacity in more than a decade, due to increasing droughts. It is located on the Colorado River, in the states of Nevada and Arizona.

Following the river eastward, one runs through the Grand Canyon (center) to Lake Powell (right), a reservoir on the Colorado River, straddling the border between Utah and Arizona. It is the second largest man-made reservoir in maximum water capacity in the United States, behind its neighbor, Lake Mead. Current water levels, however, put Lake Powell ahead of Lake Mead in water volume and surface area.

Wildfires in Arizona, USA

35.5N 110.7W

October 30th, 2012 Category: Fires, Lakes

USA – October 26th, 2012

Plumes of smoke from wildfires in Arizona, USA, blow towards the southeast. The fire in the upper left quadrant is located south of the Grand Canyon (partially visible at the top edge) and the Glen Canyon Reservoir (visible in the full image)

Grand Canyon Between Lakes Mead and Powell, USA – February 17th, 2012

36.0N 112.1W

February 17th, 2012 Category: Image of the day, Lakes, Rivers

USA - January 2nd, 2012

Visible by the left edge of this image is Lake Mead, with a distinctive, 3-pronged shape. Lake Mead is the largest reservoir in the United States in maximum water capacity. It is located on the Colorado River about 30 mi (48 km) southeast of Las Vegas, Nevada, in the states of Nevada and Arizona. Formed by water impounded by the Hoover Dam, it extends 112 miles (180 km) behind the dam, holding approximately 28,500,000 acre feet (35.2 km3) of water

Visible further east is another large reservoir, Lake Powell. It is also located on the Colorado River, straddling the border between Utah and Arizona. It is the second largest man-made reservoir in the United States behind Lake Mead, storing 24,322,000 acre feet (3.0001×1010 m3) of water when full. The lake was created by the flooding of Glen Canyon by the controversial Glen Canyon Dam.

Located between the two reservoirs (best observed in full image) is the Grand Canyon, a steep-sided canyon carved by the Colorado River in the United States in the state of Arizona. The Grand Canyon is 277 miles (446 km) long, up to 18 miles (29 km) wide and attains a depth of over a mile (6,000 feet / 1,800 metres). Nearly two billion years of the Earth’s geological history have been exposed as the Colorado River and its tributaries cut their channels through layer after layer of rock while the Colorado Plateau was uplifted.

Contours of the Grand Canyon in Arizona, USA

36.0N 112.1W

October 8th, 2011 Category: Rivers

USA - October 3rd, 2011

This orthorectified image shows part of the Grand Canyon, a steep-sided canyon carved by the Colorado River in Arizona, USA. The Grand Canyon is 277 miles (446 km) long, up to 18 miles (29 km) wide and attains a depth of over a mile (6,000 feet / 1,800 metres).

Nearly two billion years of the Earth’s geological history have been exposed as the Colorado River and its tributaries cut their channels through layer after layer of rock while the Colorado Plateau was uplifted.

While the specific geologic processes and timing that formed the Grand Canyon are the subject of debate by geologists, recent evidence suggests the Colorado River established its course through the canyon at least 17 million years ago. Since that time, the Colorado River continued to erode and form the canyon to its present-day configuration.

Lake Powell and Grand Canyon, USA – July 18th, 2010

37.4N 110.5W

July 18th, 2010 Category: Image of the day, Lakes, Rivers

USA - June 20th, 2010

USA - June 20th, 2010

Lake Powell is a reservoir on the Colorado River, straddling the border between Utah and Arizona. It can be seen at the center of this image as a dark blue area surrounded by rose colored terrain.

It is the second largest man-made reservoir in the United States behind Lake Mead, storing 24,322,000 acre feet (30 km³) of water when full. Lake Powell was created by the flooding of Glen Canyon by the controversial Glen Canyon Dam.

Upon opening the full image, another canyon can be seen in the lower left quadrant, extending westward from the western extreme of Lake Powell. This is the Grand Canyon, with the Colorado River flowing through the center.

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