The White River is a 722-mile (1,162 km) long river that flows through the U.S. states of Arkansas and Missouri.Originating in the Boston Mountains of northwest Arkansas, it flows northwards into southern Missouri, and then turns back into Arkansas, flowing southeast to its mouth at the Mississippi River. The start of a river is called the headwaters or source; the end of a river is called the mouth. The Ouachita River (/ ˈ w ɑː ʃ ɪ t ɑː / WAH-shi-tah) is a 605-mile-long (974 km) river that runs south and east through the U.S. states of Arkansas and Louisiana, joining the Tensas River to form the Black River near Jonesville, Louisiana.It is the 25th-longest river in the United States (by main stem). Ouachita River, river rising in the Ouachita Mountains of west-central Arkansas, U.S., and flowing in a generally southeasterly direction to join the Red River in Louisiana after a course of 605 miles (973 km). The fast-flowing Arkansas River smashed a 40-foot hole in a levee in rural western Arkansas, causing water to spill into a nearby community. When a river flows into another river, the 'mouth' of the river is called the confluence. These maps show the Mississippi River from St. Paul, MN to New Orleans, LA in three sections. Arkansas River Maps from Granite to Canon City! The upper Buffalo, where Ponca is located, offers the river’s---and Arkansas'---finest scenic beauty. Every waterway, including the smallest creeks within the basin or watershed are connected and seeking the ocean. The remains of the Great Raft are still visible. Arkansas River, large tributary of the Mississippi River, rising in the Sawatch Range of the Rocky Mountains near Leadville in central Colorado, U.S., and flowing generally east-southeastward for 1,460 miles (2,350 km) through Kansas, Oklahoma, and Arkansas before entering the Mississippi 40 miles The mouth of the river starts in Napoleon, Arkansas and travels through 4 states running 1469 miles. The vast Mississippi River basin takes the rivers within the areas shown to the Gulf of Mexico. The Arkansas River originates high in the Sawatch Range of the Rocky Mountains near Leadville, Colorado, and it ends in eastern Arkansas at the confluence with the Mississippi River where the town of Napoleon (Desha County) once stood. The river becomes navigable south of Shreveport and, after a series of locks and dams, merges with the mighty Mississippi. When a river flows into another river, the 'mouth' of the river is called the confluence. It offers Class II to Class V rapids for whitewater rafting. The source of the Arkansas River is in the Rocky Mountains near Leadville, Colorado. The start of a river is called the headwaters or source; the end of a river is called the mouth. These states are Colorado, Kansas, Oklahoma and Arkansas. Each of these five sections can be rafted in one day. The recreation area also offers opportunities for rock climbing, fishing, hiking, camping and mountain biking. The lower 57 miles (92 km) of the Ouachita (from its confluence with the Tensas River) Where does the Arkansas river start and end? The river is 1,460 miles long and flows across three states before making its way into Arkansas. Printer Friendly Version of this Map – Low Resolution PDF; Printer Friendly Version of this Map – High Resolution PDF; This map gives an overview of all the rafting sections of the Arkansas River in Colorado. Colorado's Arkansas Headwaters Recreation Area includes 150 miles of the Arkansas River near its source.