Million square km drainage basins

Name all drainage basins with area greater than 1M square kilometers. Source: https://en.wikipedia.org/wiki/List_of_drainage_basins_by_area
Endorheic basins are considered a single basin.
Shared estuaries or deltas are considered a single basin.
Drainages with a river as their terminus are considered part of the downstream basin.
Quiz by Phosphate
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Last updated: October 26, 2018
First submittedOctober 26, 2018
Times taken18
Average score72.7%
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Continent
Terminus
Area (sq km)
Answer
South America
Atlantic Ocean
6,145,186
Amazon River
Africa
Atlantic Ocean
3,730,881
Congo River
Asia
endorheic basin
3,626,000
Caspian Sea
Africa
Atlantic Ocean
3,254,853
Nile River
North America
Atlantic Ocean
3,202,185
Mississippi-Missouri River
South America
Atlantic Ocean
3,170,000
Río de la Plata
Asia
Arctic Ocean
2,982,493
Ob River
Asia
Arctic Ocean
2,554,388
Yenisei River
Africa
endorheic basin
2,497,738
Lake Chad basin
Asia
Arctic Ocean
2,306,743
Lena River
Africa
Atlantic Ocean
2,261,741
Niger River
Asia
Pacific Ocean
1,929,955
Amur River
North America
Arctic Ocean
1,805,200
Mackenzie River
Asia
Pacific Ocean
1,722,193
Yangtze River
Asia
Indian Ocean
1,621,000
Meghna-Padma-Ganges-Brahmaputra River
Asia
endorheic basin
1,618,750
Aral Sea
North America
Atlantic Ocean
1,344,200
St Lawrence River
Africa
Indian Ocean
1,332,574
Zambezi River
Australia
endorheic basin
1,200,000
Lake Eyre Basin
Asia
Indian Ocian
1,081,718
Indus River
North America
Atlantic Ocean
1,072,300
Nelson River
Australia
Southern Ocean
1,050,116
Murray-Darling Basin
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