The Finlay-Peace-Mackenzie River System is approximately 2,600 miles long. This particular river system is the second longest in North America.
The longest river in the US is the Missouri River that is 2,341 mi/3,768 km long.
The Mississippi River system is the largest river system in the United States. It includes the main stem of the Mississippi River and its tributaries, such as the Missouri, Ohio, and Arkansas Rivers. The Mississippi River system drains an area of over 1.2 million square miles.
The world's longest river system is the Nile-Kagera River system that flows in eastern Africa. There is some suggestion that the Amazon-Ucayali-Apurimac system in South America may be the largest.
The Detroit River. 28 miles long and part of the Great Lakes water system.
The largest river system in South Carolina is the Santee River. It is 143 miles long. All the riversin South Carolina flow generally southeastward across the state.
* #1 The Mississippi-Missouri River in the US * #2 The Mckenzie River in Canada
The eastern tributary of the Mississippi river is the Arkansas River. The Arkansas River is 1,460 miles long and is the second largest tributary to the Mississippi River system.
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Yenisei is the greatest river system flowing to the Arctic Ocean and is 3,445 miles long.
The world's largest river system is not the Nile. It is the Amazon River.
Colorado River system is where the Green river flows to.
The Mississippi River system.