Overview
Which river has the highest average discharge in North America?. The river with the highest average discharge in North America is Mississippi–Missouri–Jefferson–Beaverhead–Red Rock–Hell Roaring with a discharge rate of 16,792 m3/s and flowing out to Gulf of Mexico. At second and third, are Mackenzie–Slave–Peace–Finlay that discharges at 10,300 m3/s on average and outflows to Beaufort Sea, and Saint Lawrence–Great Lakes with an average discharge of 10,100 m3/s
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Here are North America's largest rivers by average discharge.
Mississippi–Missouri–Jefferson–Beaverhead–Red Rock–Hell Roaring.
Mississippi–Missouri–Jefferson–Beaverhead–Red Rock–Hell Roaring is the longest river in North America at 6,275 kilometers (3,899 miles).
At 6,275km (3,899 miles), the Mississippi–Missouri–Jefferson–Beaverhead–Red Rock–Hell Roaring river system is the longest in North America, helmed by the two longest rivers in the United States, the Missouri river (3,768 km) and the Mississippi River (3,544 km).The Missouri River is the longest river in North America. Originating from the Rocky Mountains of western Montana, the Missouri flows east and south for 2,341 miles (3,767 km) before merging into the Mississippi River. The Mississippi River has its sources at Lake Itasca and Brower's Spring in Montana, and stretches for another 3,544km southwards before flowing out eventually to the Gulf of Mexico.
The drainage area of the river spans 2,980,000 square kilometers and discharges at a rate of 16,792m3. The deepest part of the Mississippi River is in New Orleans, where its depth could reach 200 feet (61m).
Mackenzie–Slave–Peace–Finlay is the 2nd longest river in North America at 4,241 kilometers (2,635 miles).
Mackenzie–Slave–Peace–Finlay is a river that stretches 4,241 kilometers (or 2,635 miles) in length, draining from a 1,790,000 km2 basin in Canada.
Its average discharge rate is 10,300 m3/3 and the river flows out into Beaufort Sea.
Compare Mackenzie–Slave–Peace–Finlay with Green from North America.
Compare Mackenzie–Slave–Peace–Finlay with Canadian from North America.
Saint Lawrence–Great Lakes is the 3rd largest river by average discharge rate in North America at 10,100 m3/s.
Saint Lawrence–Great Lakes is a river that is 3,058 kilometers (or 1,900 miles) long and drains from a 1,030,000 km2 drainage basin in Canada (52.1% of river) and United States (47.9%).
Its average discharge rate is 10,100 m3/3 and the river flows out into Gulf of Saint Lawrence.
Compare Saint Lawrence–Great Lakes with Colorado (western U.S.) from North America.
Compare Saint Lawrence–Great Lakes with Athabasca from North America.
Ohio–Allegheny is the 3rd largest river by average discharge rate in United States at 7,957 m3/s.
Ohio–Allegheny is a 2,102-km long (1,306 miles) river that drains from a 490,603-km2 wide basin in United States.
The average volume of water flow is 7,957 m3/3 and the river flows out into Mississippi River.
Compare Ohio–Allegheny with Colorado (Texas) from North America.
Columbia is a river that is 2,250 kilometers (or 1,398 miles) long and drains from a 415,211 km2 drainage basin in United States and Canada.
Columbia discharges at 7,500 m3/3 and flows out into Pacific Ocean.
Yukon is the 3rd longest river in North America at 3,185 kilometers (1,979 miles).
Draining from an area as wide as 850,000 km2 in United States (59.8% of river) and Canada (40.2%), Yukon has a length of 3,185 kilometers (1,979 miles).
Yukon discharges at 6,210 m3/3 and flows out into Bering Sea.
Compare Yukon with Upper Mississippi from North America.
Compare Yukon with Saint Lawrence–Great Lakes from North America.
Fraser is a river that is 1,368 kilometers (or 850 miles) long and drains from a 220,000 km2 drainage basin in Canada.
The average volume of water flow is 3,475 m3/3 and the river flows out into Pacific Ocean.
More on the longest and largest river systems in the world:
World: Longest | Largest by Discharge Volume | Largest by Drainage Area
By Country: Australia | Brazil | Canada | China | France | Russia | UK | USA
Europe: Longest | Largest by Discharge Volume | Largest by Drainage Area
Asia: Longest | Largest by Discharge Volume | Largest by Drainage Area
Africa: Longest | Largest by Discharge Volume | Largest by Drainage Area
Oceania: Longest | Largest by Discharge Volume | Largest by Drainage Area
North America: Longest | Largest by Discharge Volume | Largest by Drainage Area
South America: Longest | Largest by Discharge Volume | Largest by Drainage Area
Outflows: Amazon River | Atlantic Ocean | Black Sea | Mississippi River | Pacific Ocean