List of drainage basins by area Basins Basins

| Basin | Continent | Drains_to | Basin_Area_km_2 | Basin_Area_mi_2 |
|---|---|---|---|---|
| Ganges – Brahmaputra | Asia | Bay of Bengal | 1621000 | 626000 |
| Aral Sea | Asia | n/a ( endorheic basin ) | 1618750 | 625000 |
| Madeira River | South America | Amazon River | 1485218 | 573446 |
| Volga River | Europe | Caspian Sea | 1410994 | 544788 |
| Persian Gulf | Asia | Indian Ocean | 1400000 | 540000 |
| Zambezi River | Africa | Indian Ocean | 1332574 | 514510 |
| Missouri River | North America | Mississippi River | 1331810 | 514215 |
| Paraguay River | South America | Paraná River | 1168540 | 451176 |
| Lake Eyre Basin | Australia | n/a ( endorheic basin ) | 1200000 | 460000 |
| Tarim Basin | Asia | n/a ( endorheic basin ) | 906500 | 350000 |
| Drainage basins of Australia | multiple | Pacific / Indian Oceans | 1100000 | 420000 |
| Nelson River | North America | Hudson Bay | 1093442 | 422180 |