Earth Snapshot RSS Feed Twitter
 
 
 
 

Posts tagged White Lake

Sediments in the Gulf of Mexico Near Houston, Texas – November 17th, 2009

29.7N 95.3W

November 17th, 2009 Category: Image of the day, Lakes, Rivers

USA - November 10th, 2009

USA - November 10th, 2009

Louisiana Lakes and Bays

Louisiana Lakes and Bays

Houston, Texas

Houston, Texas

The waters in the Gulf of Mexico off the coasts of Texas (to the west) and Louisiana (to the east), USA, are laden with sediments. Those in bays and released from rivers by the Louisiana shores are a thick, muddy brown, while those flanking the Texas shoreline are diluted to a greener hue.

The first close-up focuses on the city of Houston, the largest city within the state of Texas. The city, most of which is situated on the gulf coastal plain, is connected to a large bay to the southeast. This bay is divided into three sections: Trinity Bay (north), East Bay (east) and Galveston Bay (south). Here, the bay is mostly colored light brown from sediments, which can then be sen spilling out into the Gulf.

The second close-up depicts a series of lakes and bays  filled with dark brown sediments along the Louisiana coastline. These are, from left to right, Sabine Lake, Calcasieu Lake, Grand Lake, White Lake, Vermilion  Bay and West Cote Blanche Bay.

Atchafalaya Swamp, Louisiana, USA – March 10th, 2009

March 10th, 2009 Category: Image of the day, Lakes, Rivers

Louisiana, USA - March 1st, 2009

Louisiana, USA - March 1st, 2009

A series of bays and wetlands along the southern Lousiana coast. The Mississippi River flows down into the Gulf of Mexico, carrying dense tan and brown sediments.

The bays visible at the bottom center, including Vermilion Bay (left), West Cote Blanche Bay (center) and East Cote Blanche Bay (right).

West of these bays are two lakes: White Lake (right) and Grand Lake (left), which appear dark brown with sediments and practically joined together from high water levels.

East of the bays is the Atchafalaya Basin, or Atchafalaya Swamp, the largest swamp in the United States. It is a combination of wetlands and river delta area where the Atchafalaya River and the Gulf of Mexico converge.

The Atchafalaya is unique among basins because it has a growing delta system (notice the two branchlike protrusions in the full image) with nearly stable wetlands.

The Atchafalaya Basin, the surrounding plain of the river, is filled with bayous, bald cypress swamps, and marshes that give way to more brackish conditions and end in the Spartina grass marshes, near and at where it meets the Gulf of Mexico. It is susceptible to heavy flooding, is sparsely inhabited.

The basin is about 20 miles (32 km) in width from east to west and 150 miles (240 km) in length. With 595,000 acres (2,410 km2), it is the USA’s largest swamp wilderness, containing nationally significant expanses of bottomland hardwoods, swamplands, bayous and back-water lakes.