Everglades

Everglades
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Map of the Everglades ecoregion as delineated by the WWF. Satellite image from NASA. The yellow line encloses two ecoregions, the "Everglades" and the "South Florida rocklands". The South Florida rocklands ecoregion includes the Florida Keys and offshore islands and two patches within the Everglades.Everglades is also the name of a city in Collier County, Florida.
The Florida Everglades are subtropical marshland located in the southern portion of the U.S. state of Florida, specifically in parts of Monroe, Collier, Palm Beach, Miami-Dade, and Broward counties.

Though much modified by agricultural development in central and southern Florida, the Everglades is the southern half of a large watershed arising in the vicinity of Orlando known as the Kissimmee River system. The Kissimmee flows from Taylor Creek, Nubbin Slough, and Fisheating Creek, and discharges into Lake Okeechobee, a very large (730 mi² or 1,890 km²), shallow (10 ft or 3 m) fresh water lake. Water leaving Lake Okeechobee in the wet season forms the Everglades, a shallow, slow-moving flood at one time 40 miles (60 km) wide and over 100 miles (160 km) long moving southward across a nearly flat limestone shelf to Florida Bay at the southern end of the state. The Everglades extends from Lake Okeechobee on the north to Florida Bay on the south and was once bordered by Big Cypress Swamp on the west and the Atlantic Coastal Ridge on the east. It has been called River of Grass (Douglas, 1947) because of the slow flow of water from Okeechobee southward and the predominance of a sedge known as sawgrass. Slightly elevated points in this extremely flat area are covered with trees, usually cypress and red mangrove.

Some 50 percent of the original Everglades has been lost to agriculture. Most of the rest is now protected in a national park, national wildlife refuge, and water conservation areas. Water from the Everglades is still used as a water supply for major cities in the area, such as Miami. The Everglades is crossed from west to east by a toll road called "Alligator Alley", now part of Interstate 75.

There are several small outlets, such as the Miami River and the New River on the east and the Shark River on the southwest. There is a general south to southwesterly movement of surface water.