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Eastern Continental Divide
The Eastern Continental Divide, in conjunction with other continental divides of North America, demarcates two watersheds of the Atlantic Ocean: the Gulf of Mexico watershed and the Atlantic Seaboard watershed. Prior to 1760, the divide represented the boundary between British and French colonial possessions in North America. The ECD runs south-southwest from the Eastern Triple Divide in Pennsylvania to the watershed of the Kissimmee River, which drains via the Lake Okeechobee and the Okeechobee Waterway to both the Gulf of Mexico and the Atlantic Ocean.
The geography for the 1763 demarcation line separating the Thirteen Colonies from lands west of it, and westwards to the Mississippi River generally runs along, or close to the Eastern Continental Divide's line going from the southern Georgia border northwards to the existing Pennsylvania/New York State border, and from there northeastwards along the St. Lawrence Divide into New England.
Because the divide represents the highest terrain, air is forced upwards regardless of wind direction. This process of orographic enhancement leads to higher precipitation than surrounding areas. In winter, the divide is often much snowier than surrounding areas due to orographic enhancement and cooler temperatures with elevation. Some locations in North Carolina average up to 100 inches of snow a year and up to 175" a year falls in optimal parts of West Virginia.
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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