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Longest U.S. Rivers on a Map - Easy

Howdy! How many of America's 30 longest rivers or river systems can you name - with the help of a map?
Hawaii and Puerto Rico not shown due to absence of long rivers
Alaska not to scale and not to projection
Source: Wikipedia
See comments for further terminology
Quiz by Gassu
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Last updated: April 30, 2022
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First submittedApril 30, 2022
Times taken1,700
Average score50.0%
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Length
River
2,639 mi
Missouri
2,340 mi
Mississippi
1,980 mi
Yukon
1,900 mi
St. Lawrence
1,896 mi
Rio Grande
1,490 mi
Arkansas
1,450 mi
Colorado
1,360 mi
Red River of the South
1,306 mi
Ohio
1,280 mi
Brazos
Length
River
1,243 mi
Columbia
1,078 mi
Snake
1,026 mi
Platte
952 mi
Kuskokwim
926 mi
Pecos
926 mi
Tennessee
906 mi
Canadian
862 mi
Colorado (Texas)
807 mi
Alabama
759 mi
Milk
Length
River
757 mi
Kansas
742 mi
Red River of the North
733 mi
Cumberland
730 mi
Green
722 mi
White
720 mi
North Canadian
710 mi
Trinity
710 mi
James
698 mi
Cimarron
692 mi
Yellowstone
+3
Level 70
Apr 30, 2022
Terminology Used:

River: A body of water bearing the same name for its course

River system: A system which consists of at least two rivers. There are, however, requirements for this:

A river system has been assumed if it has

1. its source in a lake which is fed by a river of another name (e.g. Niagara River -> Lake Ontario -> St. Lawrence River)

2. its source at the confluence of two rivers, then following the longer one (e.g. Ohio -> Allegheny)

This in return means, that a longer tributary joining the main river later somewhere along its way is NOT considered a river system (e.g. Mississippi - Missouri)

N.B. I only considered information currently available in Wikipedia. The true length incl. small mountain headcreeks of unspecified length might be longer.

River length refers to total length (incl. course in Canada/Mexico)

All headwaters included can be found in quiz and answer stats.

+1
Level 59
Jan 8, 2023
ah yes the "canadian" river 💀