River Map of USA | Major US Rivers Map

The United States is the world’s fourth-largest country with an area of 3.8 million square miles.  More than 7% of this area is covered in water. The River Map of USA Shows that the Country has over 250,000 rivers. Those Rivers provide drinking water, irrigation water, transportation, electrical power, drainage, food, and recreation.

According to US Major Rivers Map, The longest river in the USA is the Missouri River; it is a tributary of the Mississippi River and is 2,540 miles long. But the biggest in terms of water volume is the deeper Mississippi River. Seven Major Rivers of USA cross or form international boundaries. The Yukon and Columbia rivers that begin in Canada and flow into the United States.

The Milk and Saint Lawrence rivers and the Red River of the North—begin in the United States and flow into Canada. Of these, only the Milk River crosses the international border twice, leaving and then re-entering the United States. Two Major Rivers Map, Colorado, and the Rio Grande begin in the United States and flow into or from a border with Mexico.

List of Longest Rivers of the United States

# Name Mouth Length Discharge
1 Missouri River

Mississippi River

2,341 mi
3,768 km
69,100 ft3/s
1,956 m3/s
2 Mississippi River

Gulf of Mexico

2,202 mi
3,544 km
650,000 ft3/s
18,400 m3/s
3 Yukon River

Bering Sea

1,979 mi
3,185 km
224,000 ft3/s
6,340 m3/s
4 Rio Grande

Gulf of Mexico

1,759 mi
2,830 km
1,300 ft3/s
37 m3/s
5 Colorado River

Gulf of California

1,450 mi
2,330 km
1,400 ft3/s
40 m3/s
6 Arkansas River

Mississippi River

1,443 mi
2,322 km
35,500 ft3/s
1,004 m3/s
7 Columbia River

Pacific Ocean

1,243 mi
2,000 km
273,000 ft3/s
7,730 m3/s
8 Red River

Atchafalaya and Mississippi rivers

1,125 mi
1,811 km
30,100 ft3/s
852 m3/s

Snake River

Columbia River

1,040 mi
1,674 km
55,300 ft3/s
1,565 m3/s
10 Ohio River

Mississippi River

979 mi
1,575 km
308,400 ft3/s
8,733 m3/s
11 Colorado River of Texas

Gulf of Mexico

970 mi
1,560 km
2,600 ft3/s
75 m3/s
12 Tennessee River

Ohio River

935 mi
1,504 km
71,000 ft3/s
2,000 m3/s
13 Canadian River Arkansas River 906 mi
1,458 km
6,100 ft3/s
174 m3/s
14 Brazos River Gulf of Mexico 860 mi
1,390 km
8,800 ft3/s
249 m3/s
15 Green River Colorado River 760 mi
1,230 km
6,100 ft3/s
172 m3/s
16 Pecos River Rio Grande 730 mi
1,175 km
71 ft3/s
2 m3/s
17 White River (Arkansas) Mississippi River 720 mi
1,159 km
34,600 ft3/s
979 m3/s
18 James Rive Missouri River 710 mi
1,140 km
854 ft3/s
24.2 m3/s
19 Kuskokwim River Bering Sea 702 mi
1,130 km
67,000 ft3s
1,900 m3/s
20 Cimarron River Arkansas River 698 mi
1,123 km
1,500 ft3/s
42 m3/s
21 Cumberland River Ohio River 696 mi
1,120 km
30,400 ft3/s
22 Yellowstone River Missouri River 678 mi
1,091 km
12,800 ft3/s
362 m3/s
23 North Platte River Platte River 665 mi
1,070 km
770 ft3/s
21.9 m3/s
24 Milk River Missouri River 625 mi
1,005 km
670 ft3/s
18.9 m3/s
25 Ouachita River Black River 605 mi
974 km
29,800 ft3/s
843 m3/s
26 Saint Lawrence River Gulf of Saint Lawrence 600 mi
965 km
440,000 ft3/s
12,600 m3/s
27 Gila River Colorado River 600 mi
960 km
210 ft3/s
6 m3/s
28 Sheyenne River Red River of the North 591 mi
951 km
288 ft3/s
8.2 m3/s
29 Tanana River Yukon River 584 mi
940 km
41,800 ft3/s
1,185 m3/s
30 Smoky Hill River Kansas River 576 mi
927 km
1,542 ft3/s
43.7 m3/s
31 Niobrara River Missouri River 568 mi
914 km
1,700 ft3/s
49 m3/s
32 Little Missouri River Missouri River 560 mi
900 km
450 ft3/s
13 m3/s
33 Sabine River Gulf of Mexico 553 mi
890 km
8,400 ft3/s
238 m3/s
34 Red River of the North Lake Winnipeg 550 mi
890 km
8,300 ft3/s
236 m3/s
35 Des Moines River Mississippi River 525 mi
845 km
6,400 ft3/s
182 m3/s
36 White River (Missouri River) Missouri River 506 mi
815 km
570 ft3/s
16 m3/s
37 Trinity River Galveston Bay 506 mi
815 km
7,800 ft3/s
222 m3/s
38 Wabash River Ohio River 503 mi
810 km
1,001 ft3/s
28 m3/s

Some Famous and Important Rivers of USA

1. The Missouri River

The Missouri River is the longest river in the United States at 2,540 miles long. Together with the Mississippi River, it forms the fourth largest river system in the world. The Map of this River begins in Western Montana and flows to the Mississippi River just north of St. Louis.

The river has over 95 significant tributaries including the Platte River, Kansas River, Milk River, Yellowstone River, and, James River. About one-fourth of all the agricultural land in the U.S. is found in the Missouri River watershed. It provides more than one-third of the country’s wheat, flax, barley, and oats.

2. The Mississippi River

The Mississippi River is the 2nd longest river in North America. It has a total length of 2,339 miles (3,765 km) from its source to the sea. It starts flowing in the state of Minnesota and flows south to the Gulf of Mexico. The River is used primarily for transportation and it is an important commercial waterway across the globe. It connects many cities and has long been an important part of American trade.

3. The Colorado River

The Colorado River starts from the state of Colorado in the Rocky Mountains and flows down into the Gulf of California. It has a total length of 1,450 miles. The river is famous for dramatic canyons, whitewater rapids, and eleven U.S. National Parks. The Colorado River and its tributaries are the primary source of water for 40 million people. There are over 30 electric power plants (water-powered) along this river!

4. The Rio Grande River

The Rio Grande river is one of the longest rivers in the USA. Its mouth is at the Gulf of Mexico and has a length of 1,759 miles. It forms a natural border between the part of the state of Texas and the country of Mexico. The river provides water for some 2,100,000 acres of cropland, excluding areas irrigated above the reservoirs. The leading industries of the Rio Grande area are mining petroleum, natural gas, coal, uranium ore, silver, lead, gold, potash, and gypsum.

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