Trinity River (Texas)
The Trinity River (Alibamu: Pahnichoba) is a 710-mile-long (1,140 km) 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").
Course
The Trinity River has four branches: the West Fork, the Clear Fork, the Elm Fork, and the East Fork.
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.