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Largest-Area Drainage Basin High Points

Basins with over 750,000 square kilometers

RankDrainage BasinArea-SqKmPeak Elev-M CountryRange (Level 2)Ascents
1.Ganges1,645,637Mount Everest8849China/NepalHimalaya63
2.Indus1,006,625K28614Pakistan/ChinaCentral Asia Ranges15
3.Yangtze1,745,204Gongga Shan7556ChinaTibet and Central China2
4.Mekong803,785Kawagebo6740ChinaTibet and Central China0
5.Amazon5,954,977Nevado Yerupaj√°6617PeruAndes4
6.Parana2,644,925Nevado de Cachi6380ArgentinaAndes2
7.Huang He835,345Amnye Maqen6282ChinaTibet and Central China0
8.Yukon861,461Denali6190United StatesAlaska-Yukon Ranges265
9.Orinoco984,503Ritacuba Blanco5410ColombiaAndes17
10.Jubba804,395Mount Kenya5199KenyaEast Africa Mountains45
11.Nile3,120,127Mount Stanley5109Congo DRC/UgandaEast Africa Mountains42
12.Congo3,710,814Volcan Karisimbi4519Congo DRC/RwandaEast Africa Mountains13
13.Ob3,023,973Gora Belukha4506Russia/KazakhstanMongolia Ranges4
14.Mississippi3,237,325Mount Elbert4399United StatesRocky Mountains1793
15.Shatt-al-Arab907,730Zard Kuh4221IranZagros Mountains2
16.Danube799,041Piz Bernina4049SwitzerlandAlps45
17.Mackenzie1,801,938Mount Columbia3741CanadaRocky Mountains34
18.Nelson1,089,692Mount Forbes3617CanadaRocky Mountains6
19.Yenisey2,588,752Gora Ak-Oyuk3604RussiaMongolia Ranges0
20.Orange983,780Thabana Ntlenyana3482LesothoSouthern Africa30
21.Lena2,469,126Pik BAM3072RussiaBaikal Area Ranges0
22.Niger2,165,404Mont Oku3011CameroonWest Africa Mountains3
23.Zambezi1,391,359Sapitwa Peak3002MalawiSouthern Africa24
24.Amur2,060,295Paektu-san2744China/North KoreaKorea-Amur Area5
25.Murray1,067,522Mount Kosciuszko2228AustraliaGreat Dividing Range297
26.Tocantins772,662Chapada dos Veadeiros-Pico 16601660BrazilBrazilian Highlands0
27.St. Lawrence1,342,160Mount Marcy1629United StatesNorth America Plains2251

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List Description

This list shows the 27 largest primary river basins in the world by area, all of which are over 750,000 square kilometers. Only basins of rivers that empty into the ocean are included--excluded are tributary basins of rivers that flow into other rivers, and internal drainage basins then end in a internal sea or dry depression. For example, the Missouri River Basin is not here, since the Missouri flows into the Mississippi; and the basin of the Caspian Sea or Volga River are not here, either, since they never flow into an ocean.

Of course, there are many unlisted river basins here with higher peaks than many of the peaks on this list. But those peaks are not in a large basin.


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