Major Rivers of the World: Length, Countries, and Features

World rivers are a standard GK topic in Kerala PSC exams. Questions typically ask about longest rivers, countries they flow through, and famous cities/features associated with them. The tables below cover all exam-essential facts.

1. Longest Rivers of the World

Rank	River	Length (km)	Continent	Countries
1	Nile	6,650	Africa	Uganda, Sudan, South Sudan, Egypt (+ 7 more)
2	Amazon	6,400	South America	Peru, Colombia, Brazil
3	Yangtze (Chang Jiang)	6,300	Asia	China
4	Mississippi-Missouri	6,275	North America	USA
5	Yenisei-Angara	5,539	Asia	Mongolia, Russia
6	Yellow River (Huang He)	5,464	Asia	China
7	Ob-Irtysh	5,410	Asia	China, Kazakhstan, Russia
8	Congo (Zaire)	4,700	Africa	DRC, Republic of Congo
9	Amur	4,444	Asia	Russia, China
10	Lena	4,400	Asia	Russia

2. Rivers by Continent

Asia

River	Source	Mouth	Key Feature
Yangtze	Tibetan Plateau	East China Sea	Longest river in Asia; Three Gorges Dam
Yellow River (Huang He)	Bayan Har Mountains, Tibet	Bohai Sea	Called “China’s Sorrow” due to devastating floods
Mekong	Tibetan Plateau	South China Sea	Flows through 6 countries; major rice-growing basin
Ganges	Gangotri Glacier, India	Bay of Bengal	Sacred river; forms world’s largest delta (with Brahmaputra)
Indus	Tibet (near Lake Mansarovar)	Arabian Sea	Indus Valley Civilisation; Pakistan’s lifeline
Brahmaputra	Angsi Glacier, Tibet	Bay of Bengal	Called Tsangpo in Tibet, Jamuna in Bangladesh
Tigris and Euphrates	Eastern Turkey	Persian Gulf	Mesopotamian civilisation; flow through Iraq

Africa

River	Source	Mouth	Key Feature
Nile	Lake Victoria region	Mediterranean Sea	Longest river in the world; Egyptian civilisation
Congo	Zambia/DRC highlands	Atlantic Ocean	Deepest river in the world (over 220 metres)
Niger	Guinea Highlands	Gulf of Guinea	Third longest in Africa; delta is major oil region
Zambezi	Zambia	Indian Ocean	Victoria Falls is on this river

Europe

River	Source	Mouth	Key Feature
Volga	Valdai Hills, Russia	Caspian Sea	Longest river in Europe (3,530 km)
Danube	Black Forest, Germany	Black Sea	Flows through 10 countries (most for any river)
Rhine	Swiss Alps	North Sea	Major commercial waterway of Western Europe
Thames	Cotswold Hills, England	North Sea	Flows through London
Seine	Burgundy, France	English Channel	Flows through Paris

North America

River	Source	Mouth	Key Feature
Mississippi-Missouri	Montana (Missouri source)	Gulf of Mexico	Largest river system in North America
Colorado	Rocky Mountains	Gulf of California	Grand Canyon carved by this river
St. Lawrence	Lake Ontario	Atlantic Ocean	Connects Great Lakes to the Atlantic

South America

River	Source	Mouth	Key Feature
Amazon	Andes, Peru	Atlantic Ocean	Largest river by discharge volume; widest river
Parana	Brazil	Rio de la Plata	Itaipu Dam is on this river
Orinoco	Guiana Highlands, Venezuela	Atlantic Ocean	Angel Falls (highest waterfall) is in its basin

3. Famous Rivers and Their Cities

River	City/Cities
Thames	London
Seine	Paris
Danube	Vienna, Budapest, Belgrade
Tiber	Rome
Nile	Cairo, Khartoum
Yangtze	Shanghai, Wuhan, Nanjing
Hudson	New York City
Potomac	Washington D.C.
Moskva	Moscow
Spree	Berlin

4. Rivers and Their Nicknames

River	Nickname	Reason
Yellow River	China’s Sorrow	Devastating floods due to silt
Nile	Gift of Egypt	Egyptian civilisation depended on its floods
Amazon	King of Waters	Largest by volume
Mississippi	Old Man River	Important in American folklore
Rhine	Father Rhine	Cultural significance in Germany
Danube	Queen of European Rivers	Flows through most countries

5. Rivers and Major Dams/Falls

Feature	River	Country
Three Gorges Dam (largest by capacity)	Yangtze	China
Itaipu Dam	Parana	Brazil-Paraguay border
Aswan High Dam	Nile	Egypt
Victoria Falls	Zambezi	Zambia-Zimbabwe border
Niagara Falls	Niagara	USA-Canada border
Angel Falls (highest waterfall)	Churun River (Orinoco basin)	Venezuela

6. Rivers Flowing into Major Water Bodies

Water Body	Rivers
Mediterranean Sea	Nile, Rhone, Ebro
Black Sea	Danube, Dnieper, Don
Caspian Sea	Volga, Ural
Bay of Bengal	Ganges, Brahmaputra, Godavari, Krishna, Kaveri
Arabian Sea	Indus, Narmada, Tapti
Atlantic Ocean	Amazon, Congo, Niger, Mississippi
Pacific Ocean	Yangtze, Yellow River, Mekong

7. Important Trans-Boundary Rivers

River	Countries It Flows Through
Danube	Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova, Ukraine (10 countries)
Mekong	China, Myanmar, Laos, Thailand, Cambodia, Vietnam
Amazon	Peru, Colombia, Brazil
Rhine	Switzerland, Liechtenstein, Austria, Germany, France, Netherlands
Nile	11 countries in East and North Africa

8. Previous Year Question Patterns

• “Longest river in the world?” — Nile
• “Longest river in Asia?” — Yangtze
• “River flowing through most countries?” — Danube (10 countries)
• “Deepest river in the world?” — Congo
• “Which river is called China’s Sorrow?” — Yellow River (Huang He)
• “Victoria Falls is on which river?” — Zambezi
• “Three Gorges Dam is on?” — Yangtze
• “Which river flows through London?” — Thames
• “Longest river in Europe?” — Volga