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Metolius River
The Metolius River (pronounced ''muh TOLL ee us'') is a tributary of the Deschutes River (through Lake Billy Chinook) in Central Oregon, United States, near the city of Sisters. The river flows north from springs near Black Butte, then turns sharply east, descending through a series of gorges before ending in the western end of the lake. The unincorporated community of Camp Sherman lies astride the southern end of the river.
The river's drainage basin is in area and, according to at least one estimate, contains of perennial streams, of intermittent streams, 42 lakes, and 121 ponds.〔(Deschutes Subbasin Plan ), Northwest Power and Conservation Council〕
==Headwaters==
(詳細はheadwaters of the river are at Metolius Springs, where the river emerges from two clusters of springs at the base of Black Butte. Water flows to these springs from the drainage basin around Black Butte Ranch, several miles to the south. The elevation of the drainage basin is above that of the springs, forming a natural standpipe that tends to stabilize the river's rate of flow.〔 (【引用サイトリンク】 The Ore Bin, Volume 34, No. 3, March 1972, p. 51 )〕
As a consequence, the water level in the Metolius River is relatively constant. The rate of flow at the headwaters is approximately or 50,000 gallons per minute), although it grows by an additional or 600,000 gallons per minute) by the time the river reaches Lake Billy Chinook. Similarly, the water temperature is also stable; at the river source, the water temperature is a consistent .〔 (【引用サイトリンク】 The Ore Bin, Volume 34, No. 3, March 1972, p. 43 )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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