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Mobile and Perdido Bays, USA

30.7N 88.2W

June 8th, 2009 Category: Rivers

Mobile Bay, Alabama, USA - June 2nd, 2009

Mobile Bay, Alabama, USA - June 2nd, 2009

Two bays can be seen draining into the Gulf of Mexico: Mobile Bay, in the center, and Perdido Bay, on the right. Here, the former is spilling a greater quantity of brown sediments into the gulf. On the left side of the image, several condensation trails are visible over land.

Mobile Bay is an inlet lying within the state of Alabama in the USA. Its mouth is formed by the Fort Morgan Peninsula on the eastern side and Dauphin Island, a barrier island, on the western side.

Mobile Bay is 413 square miles (1,070 km2) in area. It is 31 miles (50 km) long by a maximum width of 24 miles (39 km).

It is the fourth largest estuary in the United States, with a discharge of 62,000 cubic feet (1,800 m3) of water per second.

The deepest areas of the bay are located within the shipping channel, sometimes in excess of 75 feet (23 m) deep, but the average depth of the bay is 10 feet (3 m).

The Mobile River and Tensaw River empty into the northern end of the bay, making it an estuary. Several smaller rivers also empty into the bay: Dog River, Deer River, and Fowl River on the western side of the bay, and Fish River on the eastern side.

Perdido Bay is a bay draining the Perdido River that lies on the borders of Baldwin County, Alabama and Escambia County, Florida. It lies west of the Florida communities of Pensacola and Perdido Key and east of the Alabama communities of Orange Beach and Lillian.

Ono Island and the mouth of the bay are within Alabama territory, as the Florida border crosses the barrier islands just east of Perdido Pass and Alabama Point, where the bay empties into the Gulf of Mexico.