| Length (km) | Outflow | River | % Correct |
|---|---|---|---|
| 6,650 | Mediterranean | Nile | 100%
|
| 6,400 | Atlantic Ocean | Amazon | 98%
|
| 6,275 | Gulf of Mexico | Mississippi | 98%
|
| 6,300 | East China Sea | Yangtze | 94%
|
| 3,645 | Caspian Sea | Volga | 92%
|
| 5,464 | Bohai Sea | Yellow River | 92%
|
| 4,350 | South China Sea | Mekong | 88%
|
| 4,700 | Atlantic Ocean | Congo | 86%
|
| 3,610 | Arabian Sea | Indus | 78%
|
| 4,200 | Gulf of Guinea | Niger | 73%
|
| 5,410 | Gulf of Ob | Ob | 73%
|
| 3,058 | Gulf of Saint Lawrence | Saint Lawrence | 73%
|
| 3,057 | Gulf of Mexico | Rio Grande | 67%
|
| 4,400 | Laptev Sea | Lena | 65%
|
| 4,444 | Sea of Okhotsk | Amur | 63%
|
| 4,880 | Río de la Plata | Río de la Plata | 61%
|
| 3,969 | Ganges | Brahmaputra | 59%
|
| 5,539 | Kara Sea | Yenisei | 59%
|
| 3,185 | Bering Sea | Yukon | 57%
|
| 4,241 | Beaufort Sea | Mackenzie | 53%
|
| 3,672 | Southern Ocean | Murray | 53%
|
| 3,078 | Aral Sea | Syr Darya | 31%
|
| 3,180 | Atlantic Ocean | São Francisco | 27%
|
| 3,380 | Amazon | Madeira | 22%
|
| 3,060 | Andaman Sea | Salween | 20%
|
| 3,650 | Atlantic Ocean, Amazon | Tocantins | 20%
|
| 3,596 | Persian Gulf | Shatt al-Arab | 18%
|
| 3,211 | Amazon | Purús | 14%
|