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Waterton Lake is a mountain lake in southern Alberta, Canada and northern Montana, United States. The lake is composed of two bodies of water, connected by a shallow channel known locally as the Bosporus. The two parts are referred to as Lower Wateron Lake, and Upper Waterton Lake, the latter of which is crossed at the tip by the Canada-United States border. The United States Geological Survey gives the geocoordinates of for Upper Waterton Lake. The northern, lower end of the main lake lies in Waterton Lakes National Park while the upper, southern part of the lake is located in Glacier National Park. In 1979, UNESCO established the ''Waterton Biosphere Reserve'' to protect the diverse habitats including prairie grasslands, aspen parkland, subalpine forests, alpine tundra and freshwater fens that surround the lake.〔(UNESCO ) - Waterton Biosphere Reserve〕 Waterton-Glacier International Peace Park was created by the US and Canada in 1932, and in 1976 it was designated an International Biosphere Reserve. Later, in 1995, it was inscribed as a World Heritage Site by UNESCO.〔(UNESCO World Heritage Site ) - Waterton Glacier International Peace Park〕 The upper and middle Waterton Lake system has a surface of , while the lower lake, which is in Canada only, has and lies at an altitude of . Two soundings of the lake were and , done in 1910. More recent soundings have revealed a depth of 487 ft (149 m).〔()〕 Highway 5 has its westernmost point on the shores of the lake. Image:Canada 39 bg 061904.jpg|Upper Waterton Lake with Prince of Wales Hotel Image:Watertonlake.jpg|Waterton Lake in winter Image:49 parallel waterton.jpg|49th parallel north at Waterton Lake Image:Waterton Lake-27527.jpg|Looking south across Waterton Lake. ==Waterton River== The Waterton River is part of the South Saskatchewan River Basin, and the Oldman River Sub-Basin. Waterton River flows north from the Lower Waterton Lake for approx. 32 km to reach the Waterton Reservoir (Est. 1964) by the village of Hill Spring. The Waterton Reservoir diverts water of about 20 m3/s to the Belly River just upstream from the Belly's own diversion weir which diverts water to the St. Mary River. The Waterton continues north from the reservoir for approx. 39 km until it reaches the confluence with the Belly River, which is a tributary of the Oldman River. Waterton River has relatively reduced sediment concentrations due to the lakes and the reservoir acting as a sediment-settling trap. The total length of the river is . Waterton River’s mean peak discharge averages about 80 m3/s. Tributaries to the Waterton River include: *Foothill Creek *Drywood Creek : *Yarrow Creek *Dungarvan Creek *Galwey Brook : *Cottonwood Creek *Crooked Creek Waterton Reservoir has a Full Supply Level (FSL) of 1,185.67 metres, and an Irrigation Capacity of 114,334 dam3. 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「Waterton Lake」の詳細全文を読む スポンサード リンク
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