List of drainage basins by area Basins Basins

| Basin | Continent | Drains_to | Basin_Area_km_2 | Basin_Area_mi_2 |
|---|---|---|---|---|
| Mississippi-Missouri River | North America | Gulf of Mexico | 3202230 | 1 236 388 |
| Ob River | Asia | Arctic Ocean | 2972497 | 1147688 |
| Paraná River | South America | Río de la Plata | 2582672 | 997175 |
| Yenisei River | Asia | Arctic Ocean | 2554482 | 986291 |
| Lake Chad | Africa | n/a ( endorheic basin ) | 2497918 | 964452 |
| Black Sea | multiple | Mediterranean Sea | 2400000 | 930000 |
| Lena River | Asia | Arctic Ocean | 2306772 | 890650 |
| Niger River | Africa | Atlantic Ocean | 2261763 | 873272 |
| Amur River | Asia | Pacific Ocean | 1929981 | 745170 |
| Mackenzie River | North America | Arctic Ocean | 1743058 | 672998 |
| Yangtze River (Chang Jiang) | Asia | Pacific Ocean | 1722155 | 664927 |
| Baltic Sea | Europe | Atlantic Ocean | 1700000 | 660000 |
| Irtysh River | Asia | Ob River | 1673470 | 646130 |