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Largest-Area Drainage Basin High Points

Basins with over 750,000 square kilometers

Showing Kevin Ashworth's first ascent dates for climbed peaks (4 out of 27, or 14.81%)

RankDrainage BasinArea-SqMiPeak Elev-Ft CountryRange (Level 2)Ascent Date
6.Parana1,028,759Nevado de Cachi20,932ArgentinaAndes 
25.Murray412,171Mount Kosciuszko7310AustraliaGreat Dividing Range 
26.Tocantins295,684Chapada dos Veadeiros-Pico 16915548BrazilBrazilian Highlands 
22.Niger836,063Mont Oku9879CameroonWest Africa Mountains 
17.Mackenzie686,525Mount Columbia12,274CanadaRocky Mountains 
18.Nelson414,887Mount Forbes11,867CanadaRocky Mountains 
3.Yangtze673,824Gongga Shan24,790ChinaTibet and Central China 
4.Mekong310,342Kawagebo22,113ChinaTibet and Central China 
7.Huang He322,527Amnye Maqen20,610ChinaTibet and Central China 
1.Ganges635,381Mount Everest29,029China/NepalHimalaya 
2.Indus388,658K228,261China/PakistanCentral Asia Ranges 
9.Orinoco378,244Ritacuba Blanco17,749ColombiaAndes 
11.Nile1,204,682Mount Stanley16,762Congo DRC/UgandaEast Africa Mountains 
12.Shatt-al-Arab350,475Zard Kuh14,921IranZagros Mountains 
14.Ob1,167,557Gora Belukha14,783Kazakhstan/RussiaMongolia Ranges 
10.Jubba310,577Mount Kenya17,057KenyaEast Africa Mountains 
20.Orange379,838Thabana Ntlenyana11,424LesothoSouthern Africa 
23.Zambezi537,204Sapitwa Peak9849MalawiSouthern Africa 
24.Amur795,481Paektu-san9003North Korea/ChinaKorea-Amur Area 
5.Amazon2,342,529Nevado Yerupajá21,709PeruAndes 
19.Yenisey999,518Gora Ak-Oyuk11,824RussiaMongolia Ranges 
21.Lena953,330Pik BAM10,079RussiaBaikal Area Ranges 
13.Congo1,432,747Volcan Karisimbi14,826Rwanda/Congo DRCEast Africa Mountains1994-09-02
16.Danube308,510Piz Bernina13,284SwitzerlandAlps1991-09-19
8.Yukon329,016Mount McKinley20,320United StatesAlaska-Yukon Ranges1998-04-28
15.Mississippi1,251,272Mount Elbert14,433United StatesRocky Mountains2009-04-12
27.St. Lawrence502,413Mount Marcy5344United StatesNorth America Plains 

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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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