10 Incredible Facts About the Red River of the South

Written by Lisa Bohler
Published: November 17, 2023
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Panoramic shot of the Red River at the border of Oklahoma and Texas along Interstate 35. The Red River is the second largest river basin in the Great Plains forking to Texas Panhandle and Oklahoma.

The Red River flows 1,360 miles, forming a boundary line between Texas and Oklahoma.

©RaksyBH/Shutterstock.com

Texas and Oklahoma have a natural boundary line established by the Red River of the South. This waterway begins in Randall County, Texas, by merging Palo Duro Creek and Tierra Blanca Creek. As the river flows toward the east, the southern bank creates the boundary line between the two states.

When the river flows into Arkansas, it starts flowing to the south and travels south until it empties into the Atchafalaya River. A watershed basin is created in Louisiana by the Red River and the tributaries flowing into it.

1) The Red River Of The South Has Several Names

Red River of the South is one of the names this waterway has had. The Spanish people named the river the “Rio Rojo”. In Spanish, “Rio” means river, and “Rojo” means red. Translated into English, the name Rio Rojo is Red River.

During the frontier times, the waterway was named the Red River of the Natchitoches. However, many people named the waterway the Red River of the Cadodacho. This river links the Mississippi River Valley and the Great Plains region of the United States.

2) Flows West To East At The Beginning

Most rivers flow from the north to the south. The Red River of the South starts in the Panhandle of Texas and flows from the west to the east until it reaches Arkansas. Tributaries of the river include:

  • Pease River
  • Witchita River
  • Sulphur River
  • Washita River
  • Quachita River

3) The Water Is Redish-Colored

Bridge over the red river in central Texas. The Red River, or sometimes the Red River of the South, is a major tributary of the Mississippi

This river passes over red-colored soil, which causes the water to appear red.

©Bob Pool/Shutterstock.com

Another interesting fact about the Red River of the South is that the water is reddish because of the soil it crosses. As the river flows across the red dirt, it lifts some dirt and carries it down the stream. That red-colored dirt mixes in the water, giving the water a red, muddy appearance.

This river also has a high salt content. Salty water in the river occurred because of a natural phenomenon that happened 250 million years ago. Before the states, the river passed through states, and an inland sea covered the land masses. The seawater dried up. However, salt pockets were created. Those salt pockets are still present, making the water of the Red River of the South salty.

4) It Is The Second Longest River Associated With Texas

Rio Grande Village Hot Springs

The Rio Grande is the longest river, forming a Texas border.

©Fred LaBounty/Shutterstock.com

In a state as big as Texas, it is not a surprise that there are long rivers. The two longest rivers both form natural boundaries along the state borders. Red River of the South is 1,360 miles long. However, the Rio Grande River stretches 1,896 miles. That makes the Rio Grande 576 miles longer than the Red River. 1250 miles of the Rio Grande River are on the border between Texas and Mexico.

Texas has three rivers that travel one thousand miles or more from their headwaters to empty. The third river is the Brazos. This river is 1280 miles long and divides the eastern and western portions of the Lone Star State.

5) It Is Not The Only River Named The Red River In The US

Red River of the North

Rivers often have similar or identical names.



When you search for information about the Red River, be sure to search for the correct waterway. The Red River of the South is a tributary of the

Mississippi River

located in the country’s southern portion. However, the Red River of the North flows through North Dakota and Mississippi.

©Tony Webster / CC BY-SA 2.0 – License

The southern river empties into the Atchafalaya River in Louisiana, while the Red River of the North empties into Lake Winnipeg in Canada.

6) The Red River War

A sad fact about the Red River of the South is it was part of the Red River War in 1874 – 1875. The United States Army launched an offensive attack against the southern Plains Indians that called the area home. Leading up to the war, the native Americans had settled on reservations with the promise of plentiful food and the ability to live the preferred lifestyle. The government failed to keep its promises to the tribes. This disappointment led to revenge raids, growing anger, and discontent.

The Indians raided settlers moving into the area as an act of revenge. Those settlers protested and pleaded with the government to stop the attacks. An offensive was launched, and 20 battles were fought during this campaign. The battle was led by Col. Ranald Slidell Mackenzie at Palo Duro Canyon, who was responsible for breaking up a large encampment of Native Americans. The encampment included tribes from the Comanche, Kiowa, and the Cheyenne Indians.

During the battle, horses, by the hundreds, were slaughtered. However, few Indians died. The war did not end until June 2, 1875, when a band of Indians led by Quanah Parker turned themselves into soldiers at Fort Sill.

7) Steamboats Traveled The Red River

The Red River of the South was the first river west of the Mississippi colonized. There were hopes that this waterway could be opened up to increase trading. A log jam (the Great River Raft) was removed for the steamboats to navigate the waterway. However, this project took from 1893 until the 1820s to complete.

By 1830, steamboats were traveling the river, and more people moved to e4ncampments and towns along the banks of the river. Steamboat activity on the river stopped because of the railway system.

8) Quicksand Is Common

Man standing in natural quicksand river, clay sediments, sinking, drowning quick sand, stuck in the soil

Riverbanks are one of the places where quicksand is common.

©watcher fox/Shutterstock.com

The Red River of the South has quicksand along its banks in several locations. This river is the meanest river because of the quicksand along the banks and the population of mosquitos. No towns are along the banks of this river because of the quicksand dangers.

Quicksand along the banks of the river looks solid, but it can bear very little weight. If a heavy vehicle, such as a wagon, crossed quicksand, the shifting sand would cause the wagon to sink. The scientific name for quicksand and similar substances is non-Newtonian fluids.

9) The Chisolm Trail Crossed The Red River Of The South

The Jett Building / Chisholm Trail Mural Building

Millions of Texas cows traveled the Chisolm Trail between 1866 and 1884.

©Fort Worth Chisholm Trail Mural – License

Cattlemen used the Chisolm trail to move their herds north across the ARed River of the South at Duncan, Oklahoma, and then north to Abilene, Kansas. An Indian trader named Jesse Chisolm blazed the trail, creating a path for the herds of cattle to follow.

The two worst obstacles that faced cowmen on the Chisolm trail were crossing through Indian territory and crossing the Red River. Driving the cattle north created steady income for men after the Civil War. This financial gain was responsible for the recovery of the southern states. Most of the cowhands were young me. However, one 63-year-old woman named Margaret Forland led a herd of cattle from Texas to Witchita along the Chisolm trail in 1872. Margaret was the only woman to lead a cattle drive.

Diverse Wildlife Call The Red River Of The South Home

Adult Alligator Sunning on a Log

Alligators live in the Red River of the South.

©Joe Pearl Photography/iStock via Getty Images

Many species of wildlife call the Red River of the South home. Fish like the channel cat and large and smallmouth bass are plentiful in these waters. The animals that call the water home were a primary food source for many people living near the river.

Animals of the Red River of the South Include:

  • Alligator
  • Bass, including Largemouth, smallmouth, and striped
  • Beaver
  • Bluegill Perch
  • Carp
  • Channel Cat
  • Crappie
  • Cottonmouth Water Moccasins
  • Gar including longnose and alligator gar
  • Hybrid Bass
  • Paddlefish
  • Trout, including Brook and Rainbow trout
  • Turtles, including snapping turtles, red ear turtles, softshell turtles, and alligator snapping turtles.
  • Water Moccasins
  • Water Snakes

Summary Of 10 Facts About The Red River Of The South

Fact
1The Red River Of The South Has Several Names
2Flows West To East At the Beginning
3Water Is Reddish-Colored
4It Is The Second Longest River Associated With Texas
5It Is Not The Only River Named The Red River In The US
6The Red River War
7Steamboats Traveled The Red River
8Quicksand Is Common
9The Chisolm Trail Crossed The Red River Of The South
10Diverse Wildlife Call The Red River Of The South Home

The photo featured at the top of this post is © RaksyBH/Shutterstock.com


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About the Author

Lisa Bohler is a writer for A-Z Animals, where her primary focus is on mammals, amphibians, and reptiles. Lisa has been writing and researching animals for over 12 years and holds a Bachelor's Degree in English and Creative Writing from Liberty University, which she earned in 2021. A resident of Texas, Lisa enjoys fishing, gardening, and caring for the animals on her small hobby farm.

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