List of largest drainage basins
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This is a list of the drainage basins (river and lake watersheds) in the world larger than 400,000 square kilometers (154,440 square miles) - excluding the oceans and connected seas.
This list is incomplete; you can help by expanding it.
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| Basin | Continent | Area | Notes | |
|---|---|---|---|---|
| Amazon River | South America | 6,144,727 km² | 2,372,492 mi² | |
| Congo River | Africa | 3,730,474 km² | 1,440,344 mi² | |
| Nile River | Africa | 3,254,555 km² | 1,256,591 mi² | |
| Mississippi River | North America | 3,202,230 km² | 1 236 388 mi² | |
| Ob River | Asia | 2,972,497 km² | 1,147,688 mi² | |
| Paraná River | South America | 2,582,672 km² | 997,175 mi² | |
| Yenisei River | Asia | 2,554,482 km² | 986,291 mi² | |
| Lake Chad | Africa | 2,497,918 km² | 964,452 mi² | |
| Lena River | Asia | 2,306,772 km² | 890,650 mi² | |
| Niger River | Africa | 2,261,763 km² | 873,272 mi² | |
| Amur River | Asia | 1,929,981 km² | 745,170 mi² | |
| Mackenzie River | North America | 1,743,058 km² | 672,998 mi² | |
| Yangtze River (Chang Jiang) | Asia | 1,722,155 km² | 664,927 mi² | |
| Irtysh River | Asia | 1,673,470 km² | 646,130 mi² | |
| Madeira River | South America | 1,485,218 km² | 573,446 mi² | |
| Volga River | Europe | 1,410,994 km² | 544,788 mi² | |
| Caspian Sea | Asia/Europe | 1,400,000 km² | 540,000 mi² | (lake) |
| Zambezi River | Africa | 1,332,574 km² | 514,510 mi² | |
| Missouri River | North America | 1,331,810 km² | 514,215 mi² | |
| Paraguay River | South America | 1,168,540 km² | 451,176 mi² | |
| Lake Eyre Basin | Australia | 1,200,000 km² | 460,000 mi² | (lake) |
| Tarim River | Asia | 1,152,447 km² | 444,962 mi² | |
| Nelson River | North America | 1,093,442 km² | 422,180 mi² | |
| Indus River | Asia | 1,081,733 km² | 417,659 mi² | |
| Murray River | Australia | 1,072,000 km² | 413,900 mi² | |
| St. Lawrence River | North America | 1,049,621 km² | 405,261 mi² | |
| Ganges River | Asia | 1,016,104 km² | 392,320 mi² | |
| Great Slave Lake | North America | 976,200 km² | 376,913 mi² | (lake) |
| Orinoco River | South America | 953,598 km² | 368,186 mi² | |
| Huang He | Asia | 945,065 km² | 364,892 mi² | |
| Orange River | Africa | 941,421 km² | 363,485 mi² | |
| Kasai River | Africa | 925,172 km² | 357,211 mi² | |
| Yukon River | North America | 847,642 km² | 327,276 mi² | |
| Mekong River | Asia | 805,627 km² | 311,054 mi² | |
| Great Lakes | North America | 800,114 km² | 308,926 mi² | (lake) |
| Danube River | Europe | 795,686 km² | 307,216 mi² | |
| Syr Darya | Asia | 782,669 km² | 302,190 mi² | |
| Tigris-Euphrates Rivers | Asia | 765,831 km² | 295,689 mi² | |
| Tocantins River | South America | 764,183 km² | 295,053 mi² | |
| Okavango River | Africa | 721,277 km² | 278,487 mi² | |
| Negro River | South America | 720,114 km² | 278,038 mi² | |
| Colorado River (U.S.) | North America | 703,132 km² | 271,481 mi² | |
| Aral Sea | Asia | 690,000 km² | 266,410 mi² | (lake) |
| Kolyma River | Asia | 679,908 km² | 262,514 mi² | |
| Columbia River | North America | 657,490 km² | 253,858 mi² | |
| Brahmaputra River | Asia | 651,334 km² | 251,481 mi² | |
| São Francisco River | South America | 617,812 km² | 238,539 mi² | |
| Ubangi River | Africa | 613,202 km² | 236,759 mi² | |
| Rio Grande | North America | 608,023 km² | 234,759 mi² | |
| Lake Baikal | Asia | 571,000 km² | 220,000 mi² | (lake) |
| Chari River | Africa | 548,747 km² | 211,872 mi² | |
| Amu Darya | Asia | 534,764 km² | 206,474 mi² | |
| Dnieper River | Europe | 531,817 km² | 205,336 mi² | |
| Xingu River | South America | 520,292 km² | 200,886 mi² | |
| Lake Balkhash | Asia | 512,010 km² | 197,688 mi² | (lake) |
| Viljuj River | Asia | 507,874 km² | 196,091 mi² | |
| Kama River | Europe | 507,000 km² | 195,754 mi² | |
| Jubba River | Africa | 497,655 km² | 192,146 mi² | |
| Great Basin | North America | 492,000 km² | 190,000 mi² | (lake) |
| Ohio River | North America | 490,603 km² | 189,423 mi² | |
| Tapajos River | South America | 486,792 km² | 187,951 mi² | |
| Songhua River | Asia | 459,745 km² | 177,509 mi² | |
| Don River | Europe | 458,703 km² | 177,106 mi² | |
| Arkansas River | North America | 435,122 km² | 168,002 mi² | |
| Saskatchewan River | North America | 435,000 km² | 168,000 mi² | |
| Tobol River | Asia | 426,000 km² | 164,480 mi² | |
| Limpopo River | Africa | 421,168 km² | 162,614 mi² | |
| Senegal River | Africa | 419,659 km² | 162,031 mi² | |
| Ayeyarwady River | Asia | 413,674 km² | 159,720 mi² | |
| Pearl River | Asia | 409,458 km² | 158,093 mi² | |
| Volta River | Africa | 407,093 km² | 157,179 mi² | |
| Colorado River (Argentina) | South America | 402,956 km² | 155,582 mi² | |
