Some people would say it's the St. Johns river in Jacksonville, Florida - approximately 2.5 miles wide,
but the Mississippi River, at Lake Winnibigoshish (near Grand Rapids, Minnesota), is more than 7 miles (11 km) across.
Mississippi River The Neuse River just outside of New Bern, NC is over 5 miles wide. Source: Encyclopedia Britannia
South America
The worlds widest river is by far the Amazon in South America.
The world's widest river is the Rio de la Plata, in south America.
USA
Canada is the widest.
Its the Rio de la Plata that reaches 140 miles wide at its widest point.
The Nile River in Egypt is the longest river in the world. The Amazon in South America is the widest. The Mississippi is the longest in America.
The widest river in the world is the Amazon River. The second widest river in the world is the Nile River, which is the longest river in the world.
The major river in North America is the Mississippi River.
the widest river in fiji
The longest river in North America is the Mississippi-Missouri River.
The Mississippi and the Missouri rivers are on the continent of North America.