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The Mission–Aransas Estuary is the fifth largest of the Texas estuaries, with a surface area of 111,780 acres (45,240 ha) including Aransas Bay and its extensions in Redfish Bay to the southwest, Copano Bay to the northwest, and Saint Charles Bay to the north. The natural portions have an average depth of around 5.5 feet (1.7 m).
Cumulatively, Laguna Madre is approximately 130 miles (210 km) long, the length of Padre Island in the US. The main extensions include Baffin Bay in Upper Laguna Madre, Red Fish Bay just below the Saltillo Flats, and South Bay near the Mexican border. As a natural ecological unit, the Laguna Madre of the United States is the northern half of ...
South Bay is a bay in the Laguna Madre in Texas separated from the Gulf of Mexico by Brazos Island. It is the southernmost bay in Texas, about 1 mi (1.6 km) north of the Texas-Mexico Border . [ 4 ]
Port Mansfield Channel or Mansfield Cut is an artificial waterway encompassing the Laguna Madre positioned at the 97th meridian west on the earth's longest barrier island known as Padre Island. [ 2 ] [ 3 ] During Post–World War II , the tidal inlet was dredged as a private channel differentiating North Padre Island better known as Padre ...
The Laguna Madre is very shallow, with an average depth of only 0.9 m (3.0 ft). [4] The lagoon is connected to the ocean by only two narrow inlets, so the tidal range – which is already minor in this part of the Gulf of Mexico – is negligible. [4]
The General Bathymetric Chart of the Oceans (GEBCO) is a publicly available bathymetric chart of the world's oceans. The project was conceived with the aim of preparing a global series of charts showing the general shape of the seafloor. Over the years it has become a reference map of the bathymetry of the world's oceans for scientists and others.
The island was used and occupied seasonally by the Karankawa people at the time of European encounter. During Spanish rule, Father José Nicolás Ballí, also known as Padre Ballí, owned the island in the 19th century, when it was known as the Isla de Santiago land grant. [1]
Bathymetric charts showcase depth using a series of lines and points at equal intervals, called depth contours or isobaths (a type of contour line). A closed shape with increasingly smaller shapes inside of it can indicate an ocean trench or a seamount, or underwater mountain, depending on whether the depths increase or decrease going inward.