"An estuary is a semi-enclosed coastal body of water which has a free connection with the open sea and within which sea water is measurably diluted with fresh water derived from land drainage" (Cameron and Pritchard, 1963). May be a named feature. An Estuary is defined by the NOAA's Coastal Aquatic Framework (CAF) or local information concerning the extent of the mixed zone of fresh and salt water.

Photo by Marli Miller, University of Oregon.




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