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Overview of Oregon river drainage basins. This is a partial listing of rivers in the state of Oregon, United States.This list of Oregon rivers is organized alphabetically and by tributary structure.
The Rogue River (Tolowa: yan-shuu-chit’ taa-ghii~-li~’, [8] Takelma: tak-elam [9]) in southwestern Oregon in the United States flows about 215 miles (346 km) in a generally westward direction from the Cascade Range to the Pacific Ocean.
There are two groups of springs about 200 feet (61 m) apart that create the headwaters of the Metolius River. Springwater gushes from its underground source at a rate of 50,000 US gallons per minute (190,000 L/min). This makes the Metolius one of the largest spring-fed rivers in the country. The water temperature at the springs is 48 °F (9 °C).
The Metolius River (pronounced muh TOLL ee us) is a tributary of the Deschutes River in Central Oregon, United States. 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 Lake Billy Chinook .
In 2007, the city of Silverton, the Pudding River Watershed Council, and the Oregon Department of Fish and Wildlife (ODFW) began a project to improve fish passage on Abiqua Creek. The first stage of the project involves evaluating the effectiveness of the fish ladder on the city's diversion dam, built in 1916. [ 11 ]
Helium is a commonly used carrier gas for gas chromatography. The age of rocks and minerals that contain uranium and thorium can be estimated by measuring the level of helium with a process known as helium dating. [28] [30] Helium at low temperatures is used in cryogenics and in certain cryogenic applications.
Urness is the author of “Best Hikes with Kids: Oregon” and “Hiking Southern Oregon.” He can be reached at zurness@StatesmanJournal.com or (503) 399-6801. Find him on Twitter at ...
Even if there was much dissolved iron in the oceans when oxygenic photosynthesis was getting more common, it appears the banded iron formations were created by anoxyenic or micro-aerophilic iron-oxidizing bacteria which dominated the deeper areas of the photic zone, while oxygen-producing cyanobacteria covered the shallows. [90]