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Matanuska River Valley in Alaska 1
Alaska

The 75 mile long Matanuska River originates in the Chugach Mountains at the Matanuska Glacier and drains southwesterly into Knik Arm, an extension of Cook Inlet, before joining the Gulf of Alaska. The river valley is a wide sandur plain: glacial till deposited by melt-waters of the receding glacier. This is typical of glacier fed river valleys in Alaska. The river meanders on this flood plain but is capable of covering the valley floor during periods of high flow. The Matanuska river watershed is 2,070 square miles in size.

This area of the river is popular for white water rafting and has been rated Class II+ in difficulty by the American Whitewater organization. 
The panorama was made at a scenic pull-out along the Glenn Highway, a National Scenic By-way. It is the only major highway through the watershed.

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Copyright: Tom Sadowski
Type: Spherical
Resolution: 10580x5290
Taken: 10/05/2010
Uploaded: 06/06/2010
Updated: 04/03/2015
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Tags: river; scenic; valley; channels; erosion; glacial; dunes; blue; sandur; alluvial
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More About Alaska

Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait. Approximately half of Alaska's 710,231 residents (as per the 2010 United States Census) live within the Anchorage metropolitan area. Alaska is the least densely populated state of the U.S.Source: http://en.wikipedia.org/wiki/Alaska