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Beaver River is a large river in east-central Alberta and central Saskatchewan, Canada. It flows east through Alberta and Saskatchewan and then turns sharply north to flow into Lac Île-à-la-Crosse on the Churchill River which flows into Hudson Bay. The Alberta part is in the Cold Lake oil sands. Beaver River has a catchment area of in Alberta,〔(Environment Alberta ) - River basins〕 where it drains the lake system in Lac La Biche County. The total length is . It was first documented on the Turnor map of 1790, and then confirmed on the Harmon map of 1820.〔(Atlas of Alberta Lakes ) - Beaver Lake〕 ==Basin and course== The Beaver River Basin is part of the Churchill River basin and is east of the Athabasca River basin and north of the North Saskatchewan River basin. The east-flowing part passes in and out of the forest zone several times and is approximately parallel to Alberta Highway 55 and Saskatchewan Highway 55. Its source, Beaver Lake (Alberta) is just south of Lac la Biche (Alberta) which drains into the Athabasca. It exits Beaver Lake on the west side and flows south until it receives from the west the Amisk River. The outflow of Moose Lake (Alberta) comes in from the south. It enters Saskatchewan just south of Cold Lake (Alberta) and from Cold Lake the Waterhen River (Saskatchewan) runs just north of and parallel to it. In Saskatchewan it receives from the southwest the outflow of Minnistikwan Lake and then the outflow of Meadow Lake, Saskatchewan to the south. At the great bend it receives from the south a river from Green Lake, Saskatchewan. The north-flowing part flows through thinly-populated boreal forest. Saskatchewan Highway 155 follows its west bank. It receives from the east a river draining Cowan Lake (Saskatchewan) and Deleronde Lake, from the west the Waterhen River, from the east Doré River draining Doré Lake. The highway leaves the river at Beauval Forks and near Beauval, Saskatchewan it receives the outflow of Lac la Plonge from the east. It continues northward east of the south arm of the lake and enters Lac Île-à-la-Crosse across the lake from the village of Île-à-la-Crosse. 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「Beaver River (Canada)」の詳細全文を読む スポンサード リンク
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