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50 Largest Drainage Basins in the World

Enter the bodies of water that drain the most area.
Includes seas, lakes, basins, and rivers. Some answers drain into other answers.
Source: https://en.wikipedia.org/wiki/List_of_drainage_basins_by_area
Answers that drain into n/a are endorheic, with no outflow leading to an ocean.
Quiz by Eutychus
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Last updated: September 11, 2017
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First submittedSeptember 11, 2017
Times taken84
Average score56.0%
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Rank
Continent
Drains to
Answer
1
All
 
All Oceans (drain 83% of Earth's surface)
2
Multiple
Atlantic Ocean
Mediterranean Sea
3
Multilpe
Atlantic Ocean
Gulf of Mexico-Caribbean Sea
4
South America
Atlantic Ocean
Amazon River
5
North America
Atlantic Ocean
Hudson Bay
6
Africa
Atlantic Ocean
Congo River
7
Multiple
n/a
Caspian Sea
8
Africa
#2
Nile River
9
North America
#3
Mississippi River
10
South America
Atlantic Ocean
Rio de la Plata
11
Asia
Arctic Ocean
Ob River
12
South America
#10
Parana River
13
Asia
Arctic Ocean
Yenisei River
14
Africa
n/a
Chad Basin
15
Multiple
#2
Black Sea
16
Asia
Arctic Ocean
Lena River
17
Africa
Atlantic Ocean
Niger River
18
Asia
Pacific Ocean
Amur River
19
North America
Arctic Ocean
Mackenzie River
20
Asia
Pacific Ocean
Yangtze River
21
Europe
Atlantic Ocean
Baltic Sea
22
Asia
#11
Irtysh River
23
Asia
Indian Ocean
Meghna-Padma-Ganges-Brahmaputra River
24
Asia
n/a
Aral Sea
25
South America
#4
Madeira River
26
Europe
#7
Volga River
Rank
Continent
Drains to
Answer
27
Asia
Indian Ocean
Persian Gulf
28
Africa
Indian Ocean
Zambezi River
29
North America
#9
Missouri River
30
Oceania
n/a
Lake Eyre Basin
31
South America
#12
Paraguay River
32
Asia
Indian Ocean
Indus River
33
North America
#5
Nelson River
34
Oceania
Southern Ocean
Murray-Darling basin
35
North America
Atlantic Ocean
St. Lawrence River
36
Asia
#13
Angara River
37
Africa
n/a
Lake Chad
38
Asia
#23
Ganges River
39
North America
#33
Lake Winnipeg
40
North America
#19
Great Slave Lake
41
South America
Atlantic Ocean
Orinoco River
42
Asia
Pacific Ocean
Yellow River
43
Africa
Atlantic Ocean
Orange River
44
Africa
#6
Kasai River
45
Asia
n/a
Tarim Basin
46
Europe
Atlantic Ocean
North Sea
47
North America
Pacific Ocean
Yukon River
48
Asia
Pacific Ocean
Mekong River
49
Africa
Indian Ocean
Jubba-Shebelle basin
50
North America
#35
Great Lakes
51
Europe
#15
Danube River
bluesdjben
+1
Level 74
Dec 11, 2017
Great quiz! Like the way you organized the hints. Guessing all 50 was a fun challenge.
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