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USA-Mexico Border Along Rio Grande and Marte R. Gomez Reservoir

26.0N 98.2W

December 10th, 2010 Category: Lakes, Rivers

USA and Mexico - December 6th, 2010

This APM image focuses on part the USA-Mexico border, located along the Rio Grande River (visible as a curving line crossing the center of the full image).

The orange area just north of the river is composed of various cities and towns in Texas, including McAllen in Hidalgo County. Just across the river from McAllen is the Mexican city of Reynosa in the state of Tamaulipas. The two cities are connected by a bridge.

Visible on the left side of the image is the Marte R. Gomez Reservoir, also known as Sugar Lake. The completion of the El Cuchillo Dam upstream in 1994 on the San Juan River has helped to keep water levels in the lake high.

Rio Grande and Elephant Butte Reservoir, New Mexico USA

33.2N 107.1W

January 15th, 2010 Category: Lakes, Rivers

USA - December 14th, 2009

USA - December 14th, 2009

The upper Rio Grande flows southward on a vertical axis through the center of this orthorectified image. The river runs through the Rio Grande rift, a rift valley extending from Mexico to Colorado.

The lake along the river’s course towards the bottom of the image is the Elephant Butte Reservoir. The reservoir, impounded by Elephant Butte Dam, is part of the Rio Grande Project for hydroelectric power and irrigation. The reservoir, which is the largest in the state of New Mexico, can hold 2,065,010 acre-feet (2,547,152,330 m³) of water.

Upon opening the full image, another lake is visible to the south: Caballo Lake. Smaller than its northern neighbor, it is nonetheless the fourth largest reservoir in New Mexico by surface area and the fifth largest by volume. The upper area of the lake is very shallow and in recent years has been blocked from the lower, deeper end of the lake.

Rio Grande Rift Valley and Lakes in New Mexico, USA

33.1N 107.1W

September 2nd, 2009 Category: Lakes, Rivers

USA - July 27th, 2009

USA - July 27th, 2009

The Rio Grande rift is a rift valley extending north from Mexico, near El Paso, Texas, through New Mexico into central Colorado. In this orthorectified image, part of the rift valley in southern New Mexico can be observed running vertically through the image from left to center.

The upper Rio Grande flows south down the rift valley. Along its course here are two reservoirs: Elephant Butte Reservoir (above) and Caballo Lake (below).

The former is impounded by Elephant Butte Dam and is the largest reservoir in New Mexico. It is part of the Rio Grande Project, a project to provide power and irrigation to south-central New Mexico and west Texas.

The reservoir can hold 2,065,010 acre-feet (2,547,152,330 m³) of water from a drainage of 28,900 square miles (74,850 km²). It provides irrigation to 178,000 acres (720 km²) of land.

Caballo Lake, on the other hand, is the fourth largest reservoir in New Mexico in terms of surface area and the fifth largest body of water in New Mexico in terms of volume.

Argentina, from Mar Chiquita and Rio de la Plata to Patagonia – September 10th, 2010

35.4S 64.5W

September 10th, 2010 Category: Image of the day, Lakes, Mountains, Rivers, Salt Flats, Sediments

Argentina - September 5th, 2010

Many important geographical features of Argentina can be observed here. Upon opening the full image, the Andes Mountains can be observed down the left edge.

In the upper right quadrant, one can see the brown, sediment-laden waters of the Rio de la Plata estuary. The sediments are carried into the estuary by the Uruguay (right) and Paraná (left) Rivers (best observed in full image).

In the upper left quadrant, Argentina’s largest saline lake, known as Mar Chiquita (meaning “Tiny Sea”), apears green in color. To its left are the whitish salt flats of the Salinas Grandes.

In the lower right quadrant, sediments turn the waters of the Atlantic Ocean a greenish color by Bahía Blanca. In the full image, the Valdes Peninsula can be seen along the coast to the south.

To the west, in the lower left quadrant, the Neuquén (above) and Limay (below) Rivers can be observed. Clustered around these rivers are several artificial lakes created by dams.

Rivers and Lakes Near Rio de la Plata, in Argentina and Uruguay – January 22nd, 2010

34.6S 58.3W

January 22nd, 2010 Category: Image of the day, Lakes, Rivers

Argentina - December 31st, 2009

Argentina - December 31st, 2009

Several rivers flow across the terrain of Argentina and Uruguay, appearing greyish tan due to sun glint and the heavy loads of sediments they carry. The Paraná River flows in from the left edge to converge with the Uruguay River, which flows vertically down from the upper left.

The convergence of these two rivers creates the very wide Rio de la Plata. The cities of Buenos Aires, in Argentina, and Montevideo, in Uruguay, can be seen along its shores in the lower left and lower right quadrants, respectively.

Finally, the Grande River (in Spanish, Arroyo Grande) flows diagonally across the Uruguayan terrain. Two large artificial lakes lay along the river: the Rincón del Bonete Artificial Lake (larger of the two, above) and the Paso del Palmar Artificial Lake (smaller, center).