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The Trinity River (Alibamu: ''Pahnichoba'') is a river that is the longest river that flows entirely within the U.S. state of Texas. It rises in extreme northern Texas, a few miles south of the Red River. The headwaters are separated by the high bluffs on the southern side of the Red River. Robert Cavelier de La Salle, in 1687, called the stream the "River of Canoes". The name "Trinity" came three years later in 1690 from Alonso De León, who called the stream the "La Santísima Trinidad" ("the Most Holy Trinity").〔''Handbook of Texas Online'', s.v. "(Trinity River )"〕 ==Course== The Trinity River has four branches: the West Fork,〔(【引用サイトリンク】title= Upper West Fork Trinity Watershed )〕 the Clear Fork,〔(【引用サイトリンク】title= Lower West Fork Trinity Watershed )〕 the Elm Fork,〔(【引用サイトリンク】title= Elm Fork Trinity Watershed )〕 and the East Fork.〔(【引用サイトリンク】title= East Fork Trinity Watershed )〕 The West Fork Trinity River has its headwaters in Archer County. From there it flows southeast, through the man-made reservoirs Lake Bridgeport and Eagle Mountain Lake then flowing eastward through Lake Worth and then the city of Fort Worth. The Clear Fork Trinity River begins north of Weatherford, Texas and flows southeastward through Lake Weatherford and Benbrook Lake reservoirs, and then northeastward, where it joins the West Fork near downtown Fort Worth and continues as the West Fork. The Elm Fork Trinity River〔(【引用サイトリンク】title= Denton Watershed )〕 flows south from near Gainesville through Ray Roberts Lake and east of the city of Denton eventually through Lewisville Lake. The West Fork and the Elm Fork merge as they enter the city of Dallas and form the Trinity River. The East Fork Trinity River (on old maps the Bois d'Arc River) begins near McKinney, Texas and flows through Lavon Lake then Lake Ray Hubbard before joining the Trinity River just southeast of Dallas. The Trinity then flows southeastward from Dallas across a fertile floodplain and the pine forests of eastern Texas, many of which were settled during the period of the Republic of Texas. The Trinity crosses Texas State Highway 31 in Henderson County, near where the first county seat, Buffalo, was established. Roughly north of the mouth, an earthen dam was built in 1968 to form Lake Livingston. It flows onward to the south, into Trinity Bay, an arm of Galveston Bay that is an inlet of the Gulf of Mexico. Its river mouth is near the town of Anahuac, southeast of Houston. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Trinity River (Texas)」の詳細全文を読む スポンサード リンク
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