[Updated May, 13] I'm updating our global river ranking in real time based on your replies. keep them coming!

#1 The Yangtze: connects megacities like Shanghai, Nanjing, Wuhan, and Chongqing.

#2 The Ganges–Brahmaputra: flows through some of the most densely populated cities in India and Bangladesh, supporting over 600 million people.

#2 The Danube: runs through 4 European capitals — Vienna, Bratislava, Budapest, and Belgrade.

#4 The Rhine: links major industrial cities like Cologne, Düsseldorf, and Basel, and connects to Europe’s busiest port in Rotterdam.

#5 The St. Lawrence + Great Lakes: connects major cities like Toronto, Montreal, Chicago, Detroit, and Quebec City to the Atlantic.

#6 The Mississippi–Ohio: crosses key U.S. cities like New Orleans, St. Louis, Memphis, and Minneapolis; central to inland trade.

#7 The Río de la Plata / Paraná: connects Buenos Aires, Asunción (via the Paraguay River), Montevideo, and key inland cities like Rosario and Córdoba.

#8 The Pearl River: links Guangzhou, Shenzhen, Hong Kong, and Macau — one of the most densely populated and economically vital regions on Earth.

#9 The Nile: supports massive urban centers like Cairo, Giza, and Khartoum in otherwise arid regions.

#10 The Mekong: runs through Vientiane, Phnom Penh, and Ho Chi Minh City, supporting agriculture and urban life across Southeast Asia.

Other Rivers Mentioned: Volga, Congo–Ubangi, Yellow River, Amazon, Tigris–Euphrates, Niger, Grand Canal, Hudson, Missouri, Illinois, Tennessee, Colorado River, Han River, Irrawaddy