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Posts tagged Yukon River

Phytoplankton in Bering Sea Near Alaska, USA

58.6N 160.9W

August 22nd, 2011 Category: Phytoplankton, Rivers

Phytoplankton Near Alaska, USA - August 17th, 2011

A bright teal phytoplankton bloom colors the waters of the Bering Sea near the shores of Alaska, USA. Visible near the shoreline, north of the bloom, is Hagemeister Island, located on the north shore of Bristol Bay at the entrance to Togiak Bay.

Visible further north, upon opening the full image, is the Yukon River,  a major watercourse of northwestern North America. This portion of the river visible here lies in, and gives its name to, Alaska’s Yukon Territory. The river is 1,980 miles (3,190 km) long and empties into the Bering Sea at the Yukon-Kuskokwim Delta.

Yukon River Near Galena, Alaska, USA

64.7N 156.9W

January 19th, 2010 Category: Rivers

USA - December 19th, 2009

USA - December 19th, 2009

The Yukon River flows across this orthorectified image of part of the Yukon-Koyukuk Census Area in the state of Alaska, USA. As of the 2000 census, the population was 6,551. The area’s population density, at 0.0173 inhabitants/km² (0.0449/sq mi), is the lowest in the United States. Its largest communities are the cities of Galena, in the west (on the north bank of the river in this image), and Fort Yukon, in the northeast.

The census area has a total area of 147,843 square miles (382,910 km²), of which, 145,900 square miles (377,878 km²) of it is land and 1,943 square miles (5,032 km²) of it (1.31%) is water. It has the largest area of any county or county-equivalent in the United States.

The Yukon River South of the Brooks Range in Alaska, USA

66.0N 149W

October 29th, 2009 Category: Lakes, Rivers

Alaska, USA - September 6th, 2009

Alaska, USA - September 6th, 2009

The Yukon River meanders across this orthorectified image of Denali Borough in Alaska, USA, towards Canada’s Yukon Territory, to which it lends its name. Over half of the 3,700 km (2,300 mi) long river lies in the state of Alaska, making it the longest in the state. Many lakes can be seen scattered around the river.

North of the river are the foothills of the Brooks Range, a mountain range that stretches from west to east across northern Alaska and into Canada’s Yukon Territory, a total distance of about 1100 km (700 mi). The mountains top out at over 2,700 m (9,000 ft).

The Yukon River in Alaska, USA

March 25th, 2009 Category: Rivers

Yukon River, Alaska, USA - March 18th, 2009

Yukon River, Alaska, USA - March 18th, 2009

The Yukon River is a major watercourse of northwestern North America. Over half of the river lies in the U.S. state of Alaska, as is the case of the section visible here. Most of the other portion lies in and gives its name to Canada’s Yukon Territory, while a small part near the source is located in British Columbia.

The river segment in the upper half of the image is windier and surrounded by flatter land and many lakes, while the lower segment has fewer curves and runs through more mountainous territory.

The river is 3,700 km (2,300 mi) long and empties into the Bering Sea at the Yukon-Kuskokwim Delta. The average flow is 6,430 m³/s (227,000 ft³/s). The total drainage area is 832,700 km² (321,500 mi²).

The Yukon River has had a history of pollution from gold mining, military installations, dumps, wastewater, and other sources.

However, the Environmental Protection Agency does not list the Yukon River among its impaired watersheds, and water quality data from the U.S. Geological Survey shows relatively good levels of turbidity, metals, and dissolved oxygen.

The Yukon River Inter-Tribal Watershed Council, a cooperative effort of 64 First Nations and tribes in Alaska and Canada, has the goal of making the river and its tributaries safe to drink from again by supplementing and scrutinizing Government data.