Rivers are fed from runoff water, and this water comes from rain water falls from the heaven ( atmosphere, sky), mountain glaciers, mountain sheets and more.  Rivers are formed in large continent ( land surface), like North America, Europe, Africa, Asia, Australia.

Major rivers in continents/ land surface 

North America  rivers 

Great Bear River 

Yukon River 

Sacramento River

Columbia River , Snake River , Puget Sound 

Arkansas River 

Mississippi River 

Rio Grande River 

The Red River of the South

South America rivers

Amazon River 

The  Cotahuasi River 

Paraguay River

Lake Nicaragua

Asia & the four biomes Rivers

Yangtze River, Yellow River 

Mekong River , The Pearl River,  Guangdong

The Indus Valley, Ganges River 

Europe rivers

Danube, Volga

Rhine

Rhône

Africa rivers

Note African continent consists of rift valleys that have many lakes and the main rivers Nile connects to White Nile, Blue Nile, Nile Delta enters the Mediterranean.

Congo River

Madagascar chains of mountains 

Chagos largest Atoll holds the purest, cleanest water 💧 

Australia Twelve Apostles 

Queenslands mountain connects to Darling Murray River.

New Zealand Mauri  rivers

Clutha River, 

Waikato River

Hawaii longest Archipelago 

Wailuku River

Rivers around the world made up of only 1%  on land, and the most vital resource that sustains life on the planet.  It is very important to save Arctic and Antarctic where water is locked up in ice.  

Rajwantee, Washington, USA