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In hydrology, a main stem or mainstem (also known as a trunk) is "the primary downstream segment of a river, as contrasted to its tributaries". [ 1 ] [ 2 ] The mainstem extends all the way from one specific headwater to the outlet of the river, although there are multiple ways to determine which headwater (or first-order tributary) is the ...
The United States Geological Survey (USGS) defines a main-stem segment by listing coordinates for its two end points, called the source and the mouth. Some well-known rivers like the Atchafalaya, [2] Willamette, [3] and Susquehanna [4] are not included in this list because their main stems are shorter than 500 miles.
"The Main Stem" is another term for the Theater District, Manhattan Topics referred to by the same term This disambiguation page lists articles associated with the title Mainstem .
It has its own main stem, which is not the same as the Mississippi's main stem. Finetooth 17:00, 15 August 2011 (UTC) In Modern American nomenclature the Missouri is a a tributary of the Mississippi, but in hydrology it is not. Three basic methods in analyzing what a tributary consist of defining by length, by discharge, or by main stem.
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A stem is one of two main structural axes of a vascular plant, the other being the root. It supports leaves , flowers and fruits , transports water and dissolved substances between the roots and the shoots in the xylem and phloem , engages in photosynthesis, stores nutrients, and produces new living tissue. [ 1 ]
The river system is one of the most heavily developed in the world, with fifteen dams on the main stem of the Colorado [citation needed] and hundreds more on tributaries. Collectively, dams in the Colorado River basin can hold four to five times the river's annual flow, generating hydroelectricity and supplying irrigation and municipal water ...