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Lake Tahoe (; Washo: dáʔaw)〔(【引用サイトリンク】title=The Washo Project )〕 is a large freshwater lake in the Sierra Nevada of the United States. At a surface elevation of , it is located along the border between California and Nevada, west of Carson City. Lake Tahoe is the largest alpine lake in North America. Its depth is , making it the second deepest in the United States after Crater Lake (). Additionally, Lake Tahoe is the sixth largest lake by volume in the United States at , behind the five Great Lakes. The lake was formed about 2 million years ago and is a part of the Lake Tahoe Basin with the modern lake being shaped during the ice ages. It is known for the clarity of its water and the panorama of surrounding mountains on all sides.〔(【引用サイトリンク】title=Water Quality )〕 The area surrounding the lake is also referred to as Lake Tahoe, or simply Tahoe. More than 75% of the lake's watershed is national forest land, comprising the Lake Tahoe Basin Management Unit of the United States Forest Service. Lake Tahoe is a major tourist attraction in both Nevada and California. It is home to a number of ski resorts, summer outdoor recreation, and tourist attractions. Snow and skiing are a significant part of the area's economy and reputation. Mountain and lake scenery are attractions throughout the year. The Nevada side also includes large casinos. Highways provide year-round access to the area. ==Geography== Lake Tahoe is the second deepest lake in the U.S., with a maximum depth of ,〔〔 trailing only Oregon's Crater Lake at .〔(【引用サイトリンク】title=The World's Deepest Lakes )〕 Tahoe is also the 16th〔(【引用サイトリンク】title=Deepest Lake in the World Deepest Lake in the United States )〕 deepest lake in the world, and the fifth deepest in average depth. It is about long and wide and has of shoreline and a surface area of . Approximately two-thirds of the shoreline is in California. The south shore is dominated by the lake's largest city, South Lake Tahoe, California, which adjoins the town of Stateline, Nevada, while Tahoe City, California, is located on the lake's northwest shore. Although highways run within sight of the lake shore for much of Tahoe's perimeter, many important parts of the shoreline lie within state parks or are protected by the United States Forest Service. The Lake Tahoe Watershed (USGS Huc 18100200) of includes the land area that drains to the lake and the Lake Tahoe drainage divide traverses the same general area as the Tahoe Rim Trail. Lake Tahoe is fed by 63 tributaries, which drain an area about the same size as the lake; half the water entering the lake is rain or snow falling directly on it. The Truckee River is the lake's only outlet.〔 The Truckee flows northeast through Reno, Nevada, and into Pyramid Lake, Nevada, which has no outlet. Only one third of the water that leaves the lake leaves via the Truckee, however; the rest evaporates from the lake's vast surface. The flow of the Truckee River and the height of the lake are controlled by a dam at the outlet. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lake Tahoe」の詳細全文を読む スポンサード リンク
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