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The Bogachiel River is a river of the Olympic Peninsula in the U.S. state of Washington. It originates near Bogachiel Peak, flows west through the mountains of Olympic National Park. After emerging from the park it joins the Sol Duc River, forming the Quillayute River, which empties into the Pacific Ocean near La Push, Washington. The Quillayute River system, with its main tributaries of the Bogachiel, Sol Duc, Calawah, and Dickey Rivers, drains the largest watershed on the north Olympic Peninsula. The name "Bogachiel" is a corruption of the Quileute words ''bo qwa tcheel el'', or ''/boqʷač'íʔl/'', from ''/bó:q'ʷa/'', "muddy", and ''/číʔlowa/'', "water", meaning "gets riley () after a rain", "muddy waters", or, less likely, "big river". ==Course== The Bogachiel River begins in several headwater streams near Bogachiel Peak in the Olympic Wilderness of Olympic National Park, in the northwest part of the Olympic Peninsula. Flowing west through a deep valley just north of the Hoh River valley, it gathers various mountain streams, including one of its main tributaries, the North Fork Bogachiel River. Below the North Fork confluence, the Bogachiel River flows along the boundary between Clallam County and Jefferson County, crossing and recrossing the line many times. After gathering many more tributary streams, such as Tunwata Creek and Hades Creek, it leaves Olympic National Park. Skirting the edge of the Olympic National Forest, the river turns northwest, passing through Bogachiel State Park. U.S. Highway 101 follows the river for several miles. Just west of the city of Forks the Calawah River joins the Bogachiel. Forks is situated between the two rivers and takes its name from the forking streams. Below the Calawah confluence the Bogachiel River widens considerably and takes a meandering course westward through a broad valley. The Sol Duc River enters this valley from the north, and the two streams meander alongside one another for several miles before joining. The Quillayute River, formed by the confluence, flows west for only about six miles more before reaching the Pacific Ocean at La Push. In its lower reach the Quillayute River enters the coastal wilderness of Olympic National Park. The mouth of the Quillayute is contained within the Quileute Indian Reservation.〔Course info mainly from: 〕 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「Bogachiel River」の詳細全文を読む スポンサード リンク
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