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Posts tagged Sierra Nevada Mountains

San Francisco Bay, California, USA

37.7N 122.4W

May 26th, 2009 Category: Rivers

San Francisco Bay, California, USA - May 12th, 2009

San Francisco Bay, California, USA - May 12th, 2009

San Francisco Bay is a shallow, productive estuary through which water draining from approximately forty percent of California, USA, flowing in the Sacramento and San Joaquin rivers from the Sierra Nevada mountains, enters the Pacific Ocean.

Technically, both rivers flow into Suisun Bay, which flows through the Carquinez Strait to meet with the Napa River at the entrance to San Pablo Bay, which connects at its south end to San Francisco Bay, although the entire group of interconnected bays are often referred to as “San Francisco Bay.”

The Bay covers somewhere between 400 and 1,600 square miles (1,040 to 4,160 square kilometers), depending on which sub-bays (such as San Pablo Bay), estuaries, wetlands, and so on are included in the measurement.

Here, the waters in the bay and sub-bays is tan from sediments. Further inland, the tan, silt-laden rivers stand out easily against the green and brown of the surrounding landscape.

The main part of the Bay measures 3 to 12 miles (5 to 20 km) wide east-to-west and somewhere between 48 miles (77 km) and 60 miles (97 km) north-to-south.

Sacramento and San Francisco, Mountains and Sea

March 30th, 2009 Category: Lakes, Snapshots

USA - March 19th, 2009

USA - March 19th, 2009

The high Sierra Nevada Mountains around Lake Tahoe (top right), California, are capped with snow, thus living up to their name, translated as “snow-covered mountain range”.

The mountains slope down into California’s Central Valley, which stretches approximately 400 miles (600 km) from north to south. Its northern half is referred to as the Sacramento Valley, where the city of Sacramento is located, and its southern half as the San Joaquin Valley, home to cities such as San Francisco. Both cities are visible here: Sacramento towards the center, and San Francisco along the coast (bottom left).

San Francisco Bay is visible along the coast, its waters containing some golden brown sediments. The bay is a shallow, productive estuary through which water draining from approximately forty percent of California, flowing in the Sacramento and San Joaquin rivers from the Sierra Nevada mountains, enters the Pacific Ocean.

Lakes Near California-Nevada Border, USA

March 12th, 2009 Category: Lakes

California, USA - March 10th, 2009

California, USA - March 10th, 2009

Arid tan terrain near the Nevada-California border, USA, gives way to the snow-covered Sierra Nevada mountains, which slope down into the fertile green San Joaquin Valley and finally to the Pacific Ocean.

The moutainous land in the upper right quadrant is interrupted by several dark blue lakes. At the very top is Pyramid Lake, an endorheic salt lake, approximately 188 square miles (487 km²) in area, in the Great Basin in the northwestern part of the US state of Nevada.

One of the largest lakes in the United States, it is located along the east side of the Virginia Mountains with a surface elevation of about 3,790 feet (1,155 m). It is fed by the Truckee River, which enters the lake from its southern end. It has no outlet, with water leaving only by evaporation, or sub-surface seepage. The salinity is approximately 1/6th of sea water.

The large body of water to the South is Lake Tahoe, in the Sierra Nevada mountains along the border between California and Nevada.

Freshwater Lake Tahoe is the largest alpine lake in the United States. Its depth is 514 m making it the USA’s second-deepest. The lake is known for the clarity of its water and the panorama of surrounding mountains on all sides.

Two smaller lakes are visible to the East: Walker Lake (above) and Mono Lake (below). The former is a natural lake, 50.3 mi² (130 km²) in area, in the Great Basin in western Nevada, along the eastern side of the Wassuk Range. It is 18 mi (29 km) long and 7 mi (11 km) wide. The lake is fed from the north by the Walker River and has no natural outlet except absorption and evaporation.

The latter, Mono Lake, is an alkaline and hypersaline lake in California that is a critical nesting habitat for several bird species and is an unusually productive ecosystem.

Sierra Nevada Mountains and San Joaquin Valley, California – December 21st, 2008

December 21st, 2008 Category: Image of the day

Sierra Nevada Mountains and San Joaquin Valley, California - November 17th, 2008

Sierra Nevada Mountains and San Joaquin Valley, California - November 17th, 2008

We have here a clear view of a geographically diverse area: the Sierra Nevada Mountains, capped by snow, the green San Joaquin Valley to the West, and desertous Death Valley to the East.

The Sierra Nevada (Spanish for “snowy mountain range”) is a mountain range located in California, USA. In a few places, it overlaps into neighboring state of Nevada.

The range stretches 400 miles (650 km), from Fredonyer Pass in the north to Tehachapi Pass in the south.

The height of the mountains in the Sierra Nevada gradually increases from north to south. The entire range attains its peak at Mount Whitney (14,505 feet, 4,421 m).

The San Joaquin Valley refers to the area of the Central Valley of California that lies south of the Sacramento-San Joaquin Delta in Stockton.

Although most of the valley is rural, it does contain urban cities such as Stockton, Fresno, Visalia, Tulare, Hanford, Modesto, Bakersfield, and Merced.

The San Joaquin Valley has hot, dry summers and cool winters characterized by dense Tule fog. The rainy season occurs from November through April.

Death Valley, on the other hand, on the border of California and Nevada, is the lowest, driest and hottest valley in the United States. It is the location of the lowest elevation in North America at 85.5 m (282 ft) below sea level.

Death Valley holds the record for the highest reliably reported temperature in the Western hemisphere (134 °F (56.7 °C) It has an area of about 3,000 square miles (7,800 km²).

source Wikipedia