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Posts tagged Snake River

Hazy Skies Northwest of Snake River Plain, USA

46.1N 119W

August 17th, 2010 Category: Rivers

USA- August 29th, 2010

Fog or smoke from wildfires in hovers in the air over Puget Sound (upper left quadrant), in Washington State, USA, near the border with Canada.  Clouds can also be seen hugging the Pacific coastline and moving over parts of the fertile green land near the shore.

As one moves inland, this dark green turns to golden brown. Areas of green agriculture can be seen across the region, however, particularly near the Snake River. The river flows westwards through the Snake River Plain, and turns north to empty into the Columbia River in the state of Washington.

Steep mountains, low hills, deep canyons and predominantly, the flat alluvium of the Snake River Plain characterize the geologically diverse and active watershed of the Snake River.

Puget Sound and Snake River in Washington State, USA

47.9N 122.5W

August 11th, 2010 Category: Rivers

USA - August 29th, 2010

The body of water in the upper left corner is Puget Sound, a complex estuarine system of interconnected marine waterways and basins, in the US state of Washington. The sound extends approximately 100 miles (160 km) from Deception Pass in the north to Olympia, Washington in the south.

The term “Puget Sound” is used not just for the body of water but also the general region centered on the sound, including the Seattle metropolitan area, home to about 3.4 million people. This region appears as a greyish area on the shores of the sound.

Most of the area surrounding the sound and down the coastline appears fertile and green. Areas further inland are drier and tan in color. The Snake River, however, can be seen flowing across this drier area, with some areas of irrigation nearby.

The Pacific coastline and some areas of higher elevations are flanked or dotted, respectively, by clouds. Also visible in the lower left quadrant are condensation trails – straight lines of clouds formed around the exhaust of airplanes.

Lava Fields and Agriculture on the Snake River Plain, Idaho, USA – October 23rd, 2009

42.9N 112.6W

October 23rd, 2009 Category: Image of the day, Rivers, Volcanoes

Idaho, USA - July 26th, 2009

Idaho, USA - July 26th, 2009

Both circular and rectangular fields follow the path of the Snake River on the Snake River Plain, in southern Idaho, USA. The large lake is the American Falls Reservoir, created by the dam of the same name.

The dam and reservoir are a part of the Minidoka Irrigation Project on the Snake River Plain and are used primarily for flood control, irrigation, and recreation.

The darker brown areas that differ from the otherwise tan terrain of the uncultivated parts of the plain are lava fields. The largest of these is Craters of the Moon National Monument and Preserve, which encompasses three major lava fields and about 400 square miles (1,036 km2) of sagebrush steppe grasslands to cover a total area of 1,117 square miles (2,893 km2).

All three lava fields of Carters of the Moon lie along the Great Rift of Idaho, with some of the best examples of open rift cracks in the world, including the deepest known on Earth at 800 feet (240 m). There are excellent examples of almost every variety of basaltic lava as well as tree molds (cavities left by lava-incinerated trees), lava tubes (a type of cave), and many other volcanic features

The second largest lava field on the Snake River Plain, in the upper right quadrant, is Hell’s Half Acre lava field. It is the youngest of the eastern basaltic lava fields of the plain, and covers an area of about 400 km2.

The lava is basaltic in nature which formed a broad, low shield volcano with dominantly pahoehoe flows that were erupted from a 3 km long, north-west to south-east trending vent system at the north-west part of the field during a brief eruptive episode about 5,200 years ago.