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The Crooked River is a tributary, long, of the Deschutes River in the U.S. state of Oregon.〔 The river begins at the confluence of the South Fork Crooked River and Beaver Creek. Of the two tributaries, the South Fork Crooked River is the larger and is sometimes considered part of the Crooked River proper. A variant name of the South Fork Crooked River is simply "Crooked River".〔〔 The river is part of the Columbia River basin, being a tributary of the Deschutes River, which is tributary to the Columbia River. ==Course== The South Fork Crooked River originates in an area called Misery Flat, along the Deschutes County, Lake County and Harney County boundaries, north of Glass Buttes. The South Fork's tributaries drain Hampton Buttes to the west and Mackey Butte to the east. The South Fork Crooked River flows north for ,〔(【引用サイトリンク】publisher = United States Geological Survey )〕 collecting tributaries including Buck Creek and Twelvemile Creek before joining Beaver Creek to form the Crooked River proper near Paulina in Crook County. Beaver Creek arises in two forks, North Fork and South Fork Beaver Creek, in Grant County. South Fork Beaver Creek drains the slopes of Snow Mountain and Funny Butte before joining the North Fork. Beaver Creek then flows west through Paulina Valley and is joined by Grindstone Creek just upstream from Paulina. Downstream of Paulina, Beaver Creek joins the South Fork Crooked River to form the Crooked River proper. From the confluence of the South Fork and Beaver Creek, the Crooked River flows west, collecting the tributary Camp Creek from the south and then the North Fork Crooked River from the north. The North Fork Crooked River arises in Big Summit Prairie on the southern side of the Ochoco Mountains. Below the North Fork confluence, the Crooked River continues flowing west, between the Ochoco Mountains to the north and the Maury Mountains to the south. The river passes Post, the geographic center of Oregon. Then the river flows into Prineville Reservoir, created by Bowman Dam (also called Prineville Dam) on the Crooked River. Below the dam, the river bends northward to Prineville, Oregon, where it is joined by Ochoco Creek from the northeast. Like the North Fork, Ochoco Creek drains the Ochoco Mountains. After Prineville, the Crooked River flows northwest, collecting McKay Creek and several other minor tributaries before emptying into Lake Billy Chinook, an impoundment of the Deschutes River created by Round Butte Dam. The dam also impounds the lower reach of the Crooked River.〔〔 Some of the Crooked River's drainage basin lies within the Ochoco National Forest and the Crooked River National Grassland. A portion of the Crooked River near the Crooked River National Grassland is designated Wild and Scenic. Most of the North Fork Crooked River is also designated Wild and Scenic. Bridges over the Crooked River include the Crooked River Railroad Bridge owned by BNSF Railway, the Rex T. Barber Veterans Memorial Bridge that carries U.S. Route 97, and a second railroad bridge that carries the (City of Prineville Railway ). 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「Crooked River (Oregon)」の詳細全文を読む スポンサード リンク
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