| Flows into | Tributary | % Correct | |
|---|---|---|---|
| 2102 | Mississippi | Ohio via Allegheny | 92%
|
| ~3400 | __–Irtysh | Ob via Chulym until Irtysh | 83%
|
| 2400 | Amazon | Negro via Vaupés | 75%
|
| 2549 | Paraná | Paraguay | 75%
|
| 2364 | Mississippi | Arkansas | 67%
|
| 2620 | Brahmaputra–Padma | Ganges via Bhagirathi | 58%
|
| 3380 | Amazon | Madeira via Mamoré and Grande | 50%
|
| 2188 | Mississippi | Red River via Tierra Blanca | 42%
|
| 2021 | _______–Araguaia | Tocantins until Araguaia | 42%
|
| 3210 | Amazon | Purus | 17%
|
| 2272 | Congo | Ubangi via Uele | 17%
|
| 2989 | Yenisei | Lower Tunguska | 8%
|
| 2106 | ______–Angara | Yenisei via Little Yenisei until Angara | 8%
|
| 2273 | Lena | Aldan | 0%
|
| 2450 | Irtysh | Ishim | 0%
|
| 2816 | Amazon | Japurá | 0%
|
| 3283 | Amazon | Juruá | 0%
|
| 2153 | Congo | Kasai | 0%
|
| 1999 | _______, then Paraná | Pilcomayo | 0%
|
| 2011 | Paraná | Salado del Norte | 0%
|
| 2291 | Amazon | Tapajós via Teles Pires | 0%
|
| 2650 | Lena | Vilyuy | 0%
|