in Wiktionary, the free dictionary. watercourse
watercourse is the channel that a flowing body of water follows. In the UK, some aspects of criminal law such as The Rivers (Prevention of Pollution) Act 1951 specify that a watercourse includes those rivers which are dry for part of the year.  
In some juristictions owners of land over which the water flows may have rights to some or much of the water in a legal sense.
These include  estuaries, rivers, streams, anabranches and  canals. If it is  navigable it is also a waterway. A  navigable waterway may be defined under federal law in the United States differently from other countries. 
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References [ edit ]
^ a b "Waterway Definition". Duhaime.org . Retrieved . 2016-08-24
^ "Rivers (Prevention of Pollution)Act 1951". legislation.gov.uk . Retrieved . 25 August 2016
^ "Legal Definition of Water Course". Lectlaw.com . Retrieved . 2016-08-24
^ North, Colin P. "Recognition of the Sedimentary Architecture of Dryland Anabranching (Anastomosing) Rivers". Journal of Sedimentary Research. 77 (11): 925–938.
^ "U.S. Department of Homeland Security".
^ USACE, Civil Works Regulatory Program - CWA Guidance to Implement the U.S. Supreme Court Decision for the Rapanos and Carabell Cases
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