List of drainage basins by area Basins Basins

| Basin | Continent | Drains_to | Basin_Area_km_2 | Basin_Area_mi_2 |
|---|---|---|---|---|
| Atlantic Ocean | multiple | n/a | 69800000 | 26900000 |
| Arctic Ocean | multiple | n/a | 23100000 | 8900000 |
| Pacific Ocean | multiple | n/a | 20300000 | 7800000 |
| Indian Ocean | multiple | n/a | 19400000 | 7500000 |
| Southern Ocean | Antarctica | n/a | 14000000 | 5400000 |
| Mediterranean Sea | multiple | Atlantic Ocean | 8500000 | 3300000 |
| Gulf of Mexico and Caribbean Sea | multiple | Atlantic Ocean | 6200000 | 2400000 |
| Amazon River | South America | Atlantic Ocean | 6144727 | 2372492 |
| Río de la Plata | South America | Atlantic Ocean | 4144000 | 1600000 |
| Congo River | Africa | Atlantic Ocean | 3730474 | 1440344 |
| Caspian Sea | Asia/Europe | n/a ( endorheic basin ) | 3626000 | 1400000 |
| Nile River | Africa | Mediterranean Sea | 3254555 | 1256591 |