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Caloosahatchee River
The Caloosahatchee River is a river on the southwest Gulf Coast of Florida in the United States, approximately long.〔U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. (The National Map ), accessed April 18, 2011〕 It drains rural areas on the northern edge of the Everglades, east of Fort Myers. An important link in the Okeechobee Waterway, a manmade inland waterway system of southern Florida, the river forms a tidal estuary along most of its course and has recently become the subject of efforts to restore and preserve the Everglades.
== Description ==
The river issues from Lake Hicpochee, in southeastern Glades County, approximately west of Clewiston. It flows west-southwest past LaBelle, where it becomes tidal, forming an estuary along its lower . It broadens as it nears the gulf, passing Fort Myers and Cape Coral. It enters the Gulf of Mexico southwest of Fort Myers in San Carlos Bay, protected by Sanibel Island.
The Caloosahatchee Canal connecting Lake Hicpochee to Lake Okeechobee allows continuous navigation from the Caloosahatchee to the Okeechobee Waterway system; oxbow lakes mark isolated stretches of the original waterway.〔(Betsey Clayton, "Navigating the Caloosahatchee River". )〕 In 2013 heavy rains in southern Florida resulted in high runoff into Lake Okeechobee; rising lake levels forced the United States Army Corps of Engineers to release large volumes of polluted water from the lake through the St. Lucie River estuary to the east and the Caloosahatchee River estuary to the west. Thus the normal mix of fresh and salt water in those estuaries was replaced by a flood of polluted fresh water resulting in ecological damage.
Since the late 19th century, dredging and channelization of the river, as well as the artificial connection to Lake Okeechobee and its use as a water supply for urban and agricultural uses, have substantially altered the hydrology of the river. As a result, both the magnitude and timing of water delivery to the estuary have been substantially altered. Recent programs by the state government have attempted to establish minimum flow levels in the river, in part to help restore the water supply to the Everglades. A federal wildlife refuge for manatees has been established at the mouth of the river on San Carlos Bay near Fort Myers.
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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