S National Ocean Service Education: Estuaries. Salt-wedge | fjord | slightly stratified | vertically mixed | freshwater In addition to classifying estuaries based on their geology, scientists also classify estuaries based on their water circulation.
The five major types of estuaries classified according to their water circulation include salt-wedge, fjord, slightly stratified, vertically mixed, and freshwater (Levinson, 1995; USEPA, 1993). Water movements in estuaries transport organisms, circulate nutrients and oxygen, and transport sediments and wastes. Rocky Shore Web. Listing the World's Algae. The Seaweed Site. MarLIN - The Marine Life Information Network. NOAA Learning Objects.