A mainstem is defined as the principal river within a given drainage basin, in the case where a number of tributaries discharge into a larger watercourse. Viewed in terms of the Strahler Stream Order system, the mainstem would be the highest order stream amongst the streams in a given drainage basin. The United States National Weather Service considers the mainstem as the principal object of flood forecasting.[1] In detailed analyses of riverinehydrology, mainstem also refers to precise channel mapping of the principal drainage; for example, in a braided channel or system with anabranch elements the mainstem is designated as the principal braid or channel within the overall river.[2] This bridge across the Danube River links Hungary with Slovakia. ... This article includes a list of works cited or a list of external links, but its sources remain unclear because it lacks in-text citations. ... A waterway is any navigable body of water. ... U.S. Corps of Engineer diagram showing the Strahler Stream Order The Strahler Stream Order is a simple hydrology algorithm used to define stream size based on a hierarchy of its tributaries. ... This article includes a list of works cited or a list of external links, but its sources remain unclear because it lacks in-text citations. ... Picture of flooding in Amphoe Sena, Ayutthaya Province, Thailand. ... Categories: Geographical term stubs ... Water covers 70% of the Earths surface. ... An anabranch is a section of a river or stream that diverts from the main course and rejoins later. ...
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