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Mobile River
The Mobile River is located in southern Alabama in the United States. Formed out of the confluence of the Tombigbee and Alabama rivers, the approximately river drains an area of of Alabama, with a watershed extending into Mississippi, Georgia, and Tennessee. Its drainage basin is the fourth-largest of primary stream drainage basins entirely in the United States. The river has historically provided the principal navigational access for Alabama. Since construction of the Tennessee-Tombigbee Waterway, it also provides an alternative route into the Ohio River watershed.
The Tombigbee and Alabama River join to form the Mobile River approximately northeast of Mobile, along the county line between Mobile and Baldwin counties. The combined stream flows south, in a winding course. Approximately downstream from the confluence, the channel of the river divides, with the Mobile flowing along the western channel. The Tensaw River, a bayou of the Mobile River, flows alongside to the east, separated from as they flow southward. The Mobile River flows through the Mobile-Tensaw River Delta and reaches Mobile Bay on the Gulf of Mexico just east of downtown Mobile.
== Biodiversity ==
The Mobile River Basin historically supported the greatest biodiversity of freshwater snail species in the world (Bogan et al. 1995), including six genera and over 100 species that were endemic to the Mobile River Basin. During the past few decades, publications in the scientific literature have primarily dealt with the apparent decimation of this fauna following the construction of dams within the Mobile River Basin and the inundation of extensive shoal (a shallow place in a body of water) habitats by impounded waters (Goodrich 1944, Athearn 1970, Heard 1970, Stein 1976, Palmer 1986, Garner 1990).〔This article incorporates text from a public domain work of the United States Government: Fish and Wildlife Service. October 28, 1998. (''Endangered and Threatened Wildlife and Plants; Endangered Status for Three Aquatic Snails, and Threatened Status for Three Aquatic Snails in the Mobile River Basin of Alabama'' ). ''Federal Register'', Vol. 63, No. 208, Rules and Regulations. Accessed 26 January 2009.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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