The Danube has been Austria's longest river for a suprising long time of 100 years at the most .
I think its the Chief River
A river can be as long as a country! For example the Mississippi River is almost as long as the U.S vertically.
The most famous river in Australia would be the Murray River. The Murray River is Australia's longest river, at 2,508 km long (almost 1,600 miles). It begins in the Snowy Mountains in Australia's southeast, and flows through South Australia to the Southern Ocean.
The river Alt is 28kilometers long.
The Charles River is about 81mi long.
The Missouri River is 2,341 miles long and is the longest tributary to the Mississippi River.
the river nile it is 6695 km long
The River Wharfe is a river in Yorkshire, England and is 60 miles long.
It is a 230-mile long river in South America that forms most of the border between French Guiana and the Brazilian state of Amapá.
In the river. Not over it. Not under it. And not next to it. In the river.It depends what type of fish and what river or lake. Usually for a river the best place is at a long, not too shallow, slow flowing area.
The most notable river in Alaska is the Yukon River. The river runs 1,980 miles from British Colombia, Canada and empties into the Bering Sea.