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These U-shaped estuaries typically have steep sides, rock bottoms, and underwater sills contoured by glacial movement. The estuary is shallowest at its mouth, where terminal glacial moraines or rock bars form sills that restrict water flow. In the upper reaches of the estuary, the depth can exceed 300 m (1,000 ft).
This is typically found where rivers meet the ocean or sea. The wildlife found within estuaries is unique as the water in these areas is brackish - a mix of freshwater flowing to the ocean and salty seawater. [16] Other types of estuaries also exist and have similar characteristics as traditional brackish estuaries. The Great Lakes are a prime ...
Estuaries occur where there is a noticeable change in salinity between saltwater and freshwater sources. This is typically found where rivers meet the ocean or sea. The wildlife found within estuaries is unique as the water in these areas is brackish - a mix of freshwater flowing to the ocean and salty seawater. [20]
Estuaries provide habitats for a large number of organisms and support very high productivity. Estuaries provide habitats for salmon and sea trout nurseries, [43] as well as migratory bird populations. [44] Two of the main characteristics of estuarine life are the variability in salinity and sedimentation.
Estuaries of the United Kingdom (3 C, 1 P) Estuaries of the United States (2 C, 11 P) This page was last edited on 20 December 2015, at 22:51 (UTC). Text is ...
Estuaries of North America (2 C, 4 P) O. Estuaries of Oceania (2 C) S. Estuaries of South America (2 C, 2 P) This page was last edited on 30 December 2016, at ...
Estuaries by country (18 C) R. Río de la Plata (1 C, 100 P) Pages in category "Estuaries" The following 16 pages are in this category, out of 16 total.
These estuaries are characterized by a sharp density interface between the upper layer of freshwater and the bottom layer of saline water. River water dominates in this system, and tidal effects have a small role in the circulation patterns. The freshwater floats on top of the seawater and gradually thins as it moves seaward.