River

The Amazon River in South America is the largest river in the world. It moves more water than the next eight largest rivers of the world combined and has the largest drainage basin in the world. It accounts for about one fifth of the world's total river flow.

Amazon River near Iquitos, Peru. By M M from Switzerland 

The Nile is the longest river on Earth (about 6,650 km or 4,132 miles), though other rivers carry more water.

The Congo is the world's deepest river with measured depths in excess of 220 m (720 ft).[

Grand Canyon's Thunder River is the steepest in the United States.

Britain's shortest river is the Brun which runs through Burnley in Lancashire.

The Brun near Heasandford, Burnley. By Richard Spencer, 

There are no rivers In Saudi Arabia. It is the largest country on this planet without a river.

Russia has to bomb their rivers every winter to prevent dangerous flooding caused by ice dams.

There is a "boiling river" in Peru where over six kilometers of the river can reach temperatures as high as 86C/187F.  It turns out, it's not the Sun that boils the water, but fault-fed hot springs.

Contrary to popular belief, not all rivers flow south. The Nile River flows north and downhill due to gravity.

Evening, Nile River, Uganda. By Rod Waddington, 

The left bank on a river is the left side as you look downstream.