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A more comprehensive definition of an estuary is "a semi-enclosed body of water connected to the sea as far as the tidal limit or the salt intrusion limit and receiving freshwater runoff; however the freshwater inflow may not be perennial, the connection to the sea may be closed for part of the year and tidal influence may be negligible". [3]
Typical gradients from the entrance to the inner estuary or bay are observed: Decreased influence of ocean waves. Increased influence of riverine currents. Increased proportions of fine sediments (mud and silt). Increased influence of aquatic vegetation (seagrass, mangroves, salt marsh).
The Chesapeake Bay (/ ˈ tʃ ɛ s ə p iː k / CHESS-ə-peek) is the largest estuary in the United States. The bay is located in the Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula, including parts of the Eastern Shore of Maryland, the Eastern Shore of Virginia, and the state of Delaware.
The Severn Estuary Partnership encompasses an area upstream of Hurlstone Point west of Minehead and Nash Point south of Bridgend. [6] The Living Levels Partnership use a definition that draws the line between Sand Point (north of Weston-super-Mare) and Lavernock Point (south of Penarth), marked by Steep Holm and Flat Holm islands. [7]
The Brazos River Estuary is the second of three minor estuaries located on the upper-mid Texas coast in Brazoria County between Matagorda Bay and Galveston Bay. It is a riverine estuary system consisting only of the lower reaches of the Brazos River, with no associated bay. [44]
A drawing shows the location of the new estuary that will be built in Little Squalicum Park in Bellingham, Wash., after a City Council vote Monday, May 9, 2022. Show comments.
A bay can be the estuary of a river, such as the Chesapeake Bay, an estuary of the Susquehanna River. [2] Bays may also be nested within each other; for example, James Bay is an arm of Hudson Bay in northeastern Canada. Some large bays, such as the Bay of Bengal and Hudson Bay, have varied marine geology. [citation needed]
Model of Estuary. The residence time of water is a key variable determining the health of an estuary, particularly from human-induced stresses.Rapid flushing ensures that there is insufficient time for sediment accumulation or dissolved oxygen depletion in the estuary; thus a well flushed estuary is intrinsically more robust than a poorly flushed estuary. [1]