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Khartoum and Gezira Scheme by Nile River in Sudan – January 9th, 2012

15.5N 32.5E

January 9th, 2012 Category: Image of the day, Rivers

Sudan - January 9th, 2012

Situated near the top edge of this orthorectified wide-swath ASAR image is Khartoum, the capital and largest city of Sudan and of Khartoum State. It is located at the confluence of the White Nile flowing north from Lake Victoria, and the Blue Nile flowing west from Ethiopia. The location where the two Niles meet is known as “al-Mogran”.

Visible just southeast of the confluence of the Blue and White Nile Rivers at Khartoum is the Gezira Scheme, one of the largest irrigation projects in the world. It distributes water from the Blue Nile through canals and ditches to tenant farms lying between the the two rivers. The Gezira is particularly suited to irrigation because the soil slopes away from the Blue Nile and water therefore naturally runs through the irrigation canals by gravity.

White Nile River Flowing Past the Gezira Scheme, Sudan – April 19th, 2010

14.5N 33.1E

April 19th, 2010 Category: Image of the day, Rivers

Sudan - March 5th, 2010

Sudan - March 5th, 2010

Sun glint causes the White Nile River to appear truly white as it flows past the fields of the Gezira Scheme in Sudan. The Blue Nile borders this agricultural area to the east. The two rivers converge at Khartoum, near the top of the image.

The Gezira Scheme is one of the largest irrigation projects in the world, now covering about now covers 3,400 miles² (8,800 km²) in the Sudanese state of Al Jazirah. It is composed of thousands of kilometers of canals that distribute water from the Blue Nile to farms between the two rivers.

The Gezira (which means “island”) is particularly suited to irrigation because the soil slopes away from the Blue Nile and water therefore naturally runs through the irrigation canals by gravity . The soil has a high clay content which keeps down losses from seepage. The main crop grown in this region is still cotton.

The Gezira Scheme and Sennar Dam, Sudan – January 5th, 2010

14.5N 33.1E

January 5th, 2010 Category: Image of the day, Lakes, Rivers

Sudan - December 16th, 2009

Sudan - December 16th, 2009

Despite its greenish appearance, the river flowing northward across the left side of this image is the White Nile. Flowing diagonally across the right side is the Blue Nile.

The expansive, green agricultural area between the two rivers are the fields of the Gezira Scheme in Sudan’s Al Jazirah state. The scheme uses an extensive series of canals and ditches to distribute water to farms in the area.

Upon opening the full image and following the Blue Nile southward, the reservoir created by the Sennar Dam can be observed. The dam, located near the town of Sennar, was built in 1925 to provide water for crop irrigation in the Al Jazirah region. It is 3025 meters (9925 feet) long, with a maximum height of 40 meters (130 feet).

Green Fields of the Gezira Scheme in Sudan – November 27th, 2009

14.5N 33.1E

November 27th, 2009 Category: Image of the day, Rivers

Sudan - October 7th, 2009

Sudan - October 7th, 2009

The green irrigated fields of the Gezira Scheme in Sudan’s Al Jazirah state fill the land between the Blue (right) and White Nile (left) Rivers. The Gezira Scheme, begun by the British in 1925 to foster cotton farming, distributes water from the Blue Nile through canals and ditches to tenant farms lying between the two rivers.

Since the start of the scheme, Al Jazirah has become Sudan’s major agricultural region, with more than 2.5 million acres (10,000 km²) under cultivation. The initial development project was semi-private, but the government nationalized it in 1950. Cotton production increased in the 1970s but by the 1990s increased wheat production has supplanted a third of the land formerly seeded with cotton.

Blue and White Nile Rivers Meeting Near Khartoum, Sudan – November 5th, 2011

November 5th, 2011 Category: Image of the day, Rivers

Sudan - November 4th, 2011

The Nile is a major north-flowing river in North Africa, generally regarded as the longest river in the world. It is 6,650 km (4,130 miles) long and runs through ten countries: Sudan, South Sudan, Burundi, Rwanda, Democratic Republic of the Congo, Tanzania, Kenya, Ethiopia, Uganda and Egypt.

The Nile has two major tributaries, the White Nile and Blue Nile. The White Nile rises in the Great Lakes region of central Africa, with the most distant source still undetermined but located in either Rwanda or Burundi. It flows north through Tanzania, Lake Victoria, Uganda and South Sudan. The Blue Nile starts at Lake Tana in Ethiopia and flows into Sudan from the southeast.

The two rivers meet near the Sudanese capital of Khartoum. Their confluence can be observed northeast of the image center. Below the point where they converge is the Gezira Scheme, an extensive area of irrigated agriculture.