A river is a natural stream of fresh water, larger than a brook or a creek. A river flows towards another river, an ocean, a lake or an other large body of water.
The Derwent is a tributary of the Trent which it joins just south of Derby.
It's the 12th longest river in the world.
It is the largest river in the world by volume, 6280km long, 4000 mile,and second largest river in the world
It flows into the Mississippi River. Lewis and Clark used the Missouri River to navigate further west.