| 翻訳と辞書 |
| Potlatch River ： ウィキペディア英語版 |
Potlatch River
The Potlatch River is in the state of Idaho in the United States. About long, it is the lowermost major tributary to the Clearwater River, a tributary of the Snake River that is in turn a tributary of the Columbia River. Once surrounded by arid grasslands of the Columbia Plateau adjacent to the western foothills of the Rocky Mountains, the Potlatch today is used mainly for agriculture and irrigation purposes.
Its name derives from potlatch, a type of ceremony held by the indigenous people of the Pacific Northwest; one such tribe lived along the river for hundreds of years before the arrival of whites. Pioneers settled the watershed and established farms and ranches in the late 19th century. After that, logging eliminated most of the forests within the watershed and the ecology of the river is still in the process of recovery. Fishing, hiking and camping are popular recreational activities on the river; 14 percent the watershed lies on public lands. Before logging and agriculture, many varieties of riparian and forest plants once populated the catchment, and several species of fish still swim the river and its tributaries.
==Course and drainage==
The Hoodoo Mountains are the source of the Potlatch River.〔(Mineral Resources of Latah County by Charles R. Hubbard, March 1957 )〕 The Potlatch's course traces a southwesterly line across the eastern Columbia Plateau in the arid Rocky Mountain foothills. Two forks form the river's headwaters in the southern part of the Idaho Panhandle. The West Fork drains part of Latah County and the East Fork is in Clearwater County. These two forks combine near Helmer, and soon the river descends into a canyon that continues all the way to the mouth. While in the canyon, it receives Pine, Big Bear, Middle Potlatch and Little Potlatch Creeks from the north, and Boulder and Cedar Creeks from the south. Idaho State Highway 3 follows part of the lower canyon, and the town of Juliaetta is located at the Middle Potlatch Creek confluence. The river merges with the Clearwater at the elevation of 〔 between the towns of Myrtle and Spalding. Its average discharge at the mouth, according to a USGS stream gauge, is . A peak flow of was recorded there in 2006. The river reaches its highest peaks in the winter and early spring, while it reduces to a trickle by summer and autumn.〔 The river mainly flows over and through coarse Columbia River basalts that comprise the Columbia Plateau, similar in geology to the Palouse River farther west.
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「Potlatch River」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|