The River Severn (note spelling) has been in its present form since the end of the last Ice Age.
The River Seven, also called the River Severn, is located in the United Kingdom. it is the longest river in the UK running for 220 miles. The depth of the river has never been measured.
The river is 1980 miles (3190 km) long and empties into the Bering Sea. And no one knows when it starts to be a river.
The Danube has been Austria's longest river for a suprising long time of 100 years at the most .
It has been there for 2000 years. The river Thames has been around for at least 10,000 years.
The river seven is so long because when the river makes a waterfall, the waterfall makes the rocks fall which makes the river go bigger and longer. Hope this helps you! :P xxx
The Missouri River is approximately 2,341 miles long, making it the longest river in North America. It flows through seven U.S. states, starting in Montana and emptying into the Mississippi River in Missouri.
The Loire river is the longest river of France runs about 630 miles.
The river is a natural part of the earth. It has not been rebuilt.
The Nile River has been announced the deepest river in the world as of 2014.
It has been around for 200,000,000 years.
thirty seven years
Ever since it existed