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Largest-Area Drainage Basin High Points

Basins with over 750,000 square kilometers

Showing Klaas Koehne's most recent ascent dates for climbed peaks (1 out of 27, or 3.7%)

RankDrainage BasinArea-SqMiPeak Elev-Ft CountryRange (Level 2)AscentsAscent Date
1.Amazon2,299,219Nevado Yerupaj√°21,709PeruAndes4 
2.Congo1,432,747Volcan Karisimbi14,826Congo DRC/RwandaEast Africa Mountains9 
3.Mississippi1,249,933Mount Elbert14,433United StatesRocky Mountains1494 
4.Nile1,204,682Mount Stanley16,762Congo DRC/UgandaEast Africa Mountains372013-12-30
5.Ob1,167,557Gora Belukha14,783Russia/KazakhstanMongolia Ranges4 
6.Parana1,021,207Nevado de Cachi20,932ArgentinaAndes3 
7.Yenisey999,518Gora Ak-Oyuk11,824RussiaMongolia Ranges0 
8.Lena953,330Pik BAM10,079RussiaBaikal Area Ranges0 
9.Niger836,063Mont Oku9879CameroonWest Africa Mountains3 
10.Amur795,481Paektu-san9003China/North KoreaKorea-Amur Area4 
11.Mackenzie695,729Mount Columbia12,274CanadaRocky Mountains26 
12.Yangtze673,824Gongga Shan24,790ChinaTibet and Central China2 
13.Ganges635,381Mount Everest29,029China/NepalHimalaya59 
14.Zambezi537,204Sapitwa Peak9849MalawiSouthern Africa21 
15.St. Lawrence518,209Mount Marcy5344United StatesNorth America Plains1950 
16.Nelson420,731Mount Forbes11,867CanadaRocky Mountains4 
17.Murray412,171Mount Kosciuszko7310AustraliaGreat Dividing Range260 
18.Indus388,658K228,261Pakistan/ChinaCentral Asia Ranges14 
19.Orinoco380,117Ritacuba Blanco17,749ColombiaAndes17 
20.Orange379,838Thabana Ntlenyana11,424LesothoSouthern Africa27 
21.Shatt-al-Arab350,475Zard Kuh13,848IranZagros Mountains2 
22.Yukon332,610Denali20,310United StatesAlaska-Yukon Ranges219 
23.Huang He322,527Amnye Maqen20,610ChinaTibet and Central China0 
24.Jubba310,577Mount Kenya17,057KenyaEast Africa Mountains35 
25.Mekong310,342Kawagebo22,113ChinaTibet and Central China0 
26.Danube308,510Piz Bernina13,284SwitzerlandAlps39 
27.Tocantins298,325Chapada dos Veadeiros-Pico 16915548BrazilBrazilian 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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