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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.St. Lawrence1,342,160Mount Marcy1629United StatesNorth America Plains2190
2.Mississippi3,237,325Mount Elbert4399United StatesRocky Mountains1694
3.Murray1,067,522Mount Kosciuszko2228AustraliaGreat Dividing Range288
4.Yukon861,461Denali6190United StatesAlaska-Yukon Ranges254
5.Ganges1,645,637Mount Everest8849China/NepalHimalaya62
6.Jubba804,395Mount Kenya5199KenyaEast Africa Mountains45
7.Danube799,041Piz Bernina4049SwitzerlandAlps43
8.Nile3,120,127Mount Stanley5109Congo DRC/UgandaEast Africa Mountains39
9.Mackenzie1,801,938Mount Columbia3741CanadaRocky Mountains32
10.Orange983,780Thabana Ntlenyana3482LesothoSouthern Africa29
11.Zambezi1,391,359Sapitwa Peak3002MalawiSouthern Africa23
12.Orinoco984,503Ritacuba Blanco5410ColombiaAndes17
13.Indus1,006,625K28614Pakistan/ChinaCentral Asia Ranges15
14.Congo3,710,814Volcan Karisimbi4519Congo DRC/RwandaEast Africa Mountains12
15.Nelson1,089,692Mount Forbes3617CanadaRocky Mountains6
16.Amazon5,954,977Nevado Yerupaj√°6617PeruAndes4
16.Ob3,023,973Gora Belukha4506Russia/KazakhstanMongolia Ranges4
16.Amur2,060,295Paektu-san2744China/North KoreaKorea-Amur Area4
19.Niger2,165,404Mont Oku3011CameroonWest Africa Mountains3
20.Yangtze1,745,204Gongga Shan7556ChinaTibet and Central China2
20.Parana2,644,925Nevado de Cachi6380ArgentinaAndes2
20.Shatt-al-Arab907,730Zard Kuh4221IranZagros Mountains2
23.Mekong803,785Kawagebo6740ChinaTibet and Central China0
23.Huang He835,345Amnye Maqen6282ChinaTibet and Central China0
23.Yenisey2,588,752Gora Ak-Oyuk3604RussiaMongolia Ranges0
23.Lena2,469,126Pik BAM3072RussiaBaikal Area Ranges0
23.Tocantins772,662Chapada dos Veadeiros-Pico 16601660BrazilBrazilian Highlands0

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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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