List of drainage basins by area
Basins
Columns: Basin | Continent | Drains to | Basin Area km 2 | Basin Area mi 2
Atlantic Ocean | multiple | n/a | 69800000 | 26,900,000 | Arctic Ocean | multiple | n/a | 23100000 | 8,900,000 | Pacific Ocean | multiple | n/a | 20300000 | 7,800,000 | Indian Ocean | multiple | n/a | 19400000 | 7,500,000 | Southern Ocean | Antarctica | n/a | 14000000 | 5,400,000 | Mediterranean Sea | multiple | Atlantic Ocean | 8500000 | 3,300,000 | Gulf of Mexico and Caribbean Sea | multiple | Atlantic Ocean | 6200000 | 2,400,000 | Amazon River | South America | Atlantic Ocean | 6144727 | 2,372,492 | Río de la Plata | South America | Atlantic Ocean | 4144000 | 1,600,000 | Congo River | Africa | Atlantic Ocean | 3730474 | 1,440,344 | Caspian Sea | Asia/Europe | n/a ( endorheic basin ) | 3626000 | 1,400,000 | Nile River | Africa | Mediterranean Sea | 3254555 | 1,256,591 | Mississippi-Missouri River | North America | Gulf of Mexico | 3202230 | 1 236 388 | Ob River | Asia | Arctic Ocean | 2972497 | 1,147,688 | Paraná River | South America | Río de la Plata | 2582672 | 997,175 | Yenisei River | Asia | Arctic Ocean | 2554482 | 986,291 | Lake Chad | Africa | n/a ( endorheic basin ) | 2497918 | 964,452 | Black Sea | multiple | Mediterranean Sea | 2400000 | 930,000 | Lena River | Asia | Arctic Ocean | 2306772 | 890,650 | Niger River | Africa | Atlantic Ocean | 2261763 | 873,272 | Amur River | Asia | Pacific Ocean | 1929981 | 745,170 | Mackenzie River | North America | Arctic Ocean | 1743058 | 672,998 | Yangtze River (Chang Jiang) | Asia | Pacific Ocean | 1722155 | 664,927 | Baltic Sea | Europe | Atlantic Ocean | 1700000 | 660,000 | Irtysh River | Asia | Ob River | 1673470 | 646,130 | Ganges – Brahmaputra | Asia | Bay of Bengal | 1621000 | 626,000 | Aral Sea | Asia | n/a ( endorheic basin ) | 1618750 | 625,000 | Madeira River | South America | Amazon River | 1485218 | 573,446 | Volga River | Europe | Caspian Sea | 1410994 | 544,788 | Persian Gulf | Asia | Indian Ocean | 1400000 | 540,000 | Zambezi River | Africa | Indian Ocean | 1332574 | 514,510 | Missouri River | North America | Mississippi River | 1331810 | 514,215 | Paraguay River | South America | Paraná River | 1168540 | 451,176 | Lake Eyre Basin | Australia | n/a ( endorheic basin ) | 1200000 | 460,000 | Tarim Basin | Asia | n/a ( endorheic basin ) | 906500 | 350,000 | Drainage basins of Australia | multiple | Pacific / Indian Oceans | 1100000 | 420,000 | Nelson River | North America | Hudson Bay | 1093442 | 422,180 | Indus River | Asia | Arabian Sea | 1081733 | 417,659 | Murray-Darling basin | Australia | Southern Ocean | 1072000 | 413,900 | St. Lawrence River | North America | Atlantic Ocean | 1049621 | 405,261 | Ganges River | Asia | Indian Ocean | 1016104 | 392,320 | Great Slave Lake | North America | Mackenzie River | 976200 | 376,913 | Orinoco River | South America | Atlantic Ocean | 953598 | 368,186 | Huang He (Yellow River) | Asia | Pacific Ocean | 945065 | 364,892 | Orange River | Africa | Atlantic Ocean | 941421 | 363,485 | Kasai River | Africa | Congo River | 925172 | 357,211 | Yukon River | North America | Bering Sea | 847642 | 327,276 | Mekong River | Asia | Pacific Ocean | 805627 | 311,054 | Great Lakes | North America | St. Lawrence River | 800114 | 308,926 | Danube River | Europe | Black Sea | 795686 | 307,216 | Syr Darya | Asia | Aral Sea | 782669 | 302,190 | Tigris - s Euphrates River | Asia | Persian Gulf | 765831 | 295,689 | Tocantins River | South America | Atlantic Ocean | 764183 | 295,053 | Okavango River / Okavango Delta | Africa | n/a ( endorheic basin ) | 721277 | 278,487 | Rio Negro | South America | Amazon River | 720114 | 278,038 | Colorado River (U.S.) | North America | Gulf of California | 703132 | 271,481 | Kolyma River | Asia | Arctic Ocean | 679908 | 262,514 | Columbia River | North America | Pacific Ocean | 657490 | 253,858 | Brahmaputra River | Asia | Indian Ocean | 651334 | 251,481 | Red Sea | multiple | Indian Ocean | 620000 | 230,000 | São Francisco River | South America | Atlantic Ocean | 617812 | 238,539 | Ubangi River | Africa | Congo River | 613202 | 236,759 | Rio Grande | North America | Gulf of Mexico | 608023 | 234,759 | Lake Baikal | Asia | Angara River | 571000 | 220,000 | Chari River | Africa | Lake Chad | 548747 | 211,872 | Amu Darya | Asia | Aral Sea | 534764 | 206,474 | Dnieper River | Europe | Black Sea | 531817 | 205,336 | Xingu River | South America | Amazon River | 520292 | 200,886 | Lake Balkhash | Asia | n/a ( endorheic basin ) | 512010 | 197,688 | Viljuj River | Asia | Lena River | 507874 | 196,091 | Kama River | Europe | Volga River | 507000 | 195,754 | Jubba River | Africa | Indian Ocean | 497655 | 192,146 | Great Basin | North America | n/a ( endorheic basin ) | 492000 | 190,000 | Ohio River | North America | Mississippi River | 490603 | 189,423 | Tapajos River | South America | Amazon River | 486792 | 187,951 | Songhua River | Asia | Amur River | 459745 | 177,509 | Don River | Europe | Black Sea | 458703 | 177,106 | Arkansas River | North America | Mississippi River | 435122 | 168,002 | Saskatchewan River | North America | Lake Winnipeg | 435000 | 168,000 | Tobol River | Asia | Irtysh River | 426000 | 164,480 | Limpopo River | Africa | Indian Ocean | 421168 | 162,614 | Senegal River | Africa | Atlantic Ocean | 419659 | 162,031 | Ayeyarwady River | Asia | Indian Ocean | 413674 | 159,720 | Pearl River | Asia | Pacific Ocean | 409458 | 158,093 | Volta River | Africa | Atlantic Ocean | 407093 | 157,179