| Respuesta | m3 | Países de su cuenca | % Correcto |
|---|---|---|---|
| Amazonas-Ucayali-Apurimac | 219,000 | Brasil, Perú, Bolivia, Ecuador, Colombia, Venezuela, Guyana | 100%
|
| Paraná-de la Plata | 18,000 | Brasil, Argentina, Paraguay, Bolivia, Uruguay | 76%
|
| Orinoco | 33,000 | Venezuela, Colombia, Guyana | 63%
|
| Paraguay | 4,300 | Brasil, Praguay, Bolivia, Argentina | 41%
|
| Negro | 26,700 | Brasil, Venezuela, Colombia | 37%
|
| Magdalena | 9,000 | Colombia | 27%
|
| Madeira-Mamoré-Grande-Caine-Rocha | 31,200 | Brasil, Bolivia, Perú | 23%
|
| Tocantins-Araguaia | 13,598 | Brasil | 13%
|
| Purús | 8,400 | Brasil, Perú | 5%
|
| Araguaiá | 5,510 | Brasil | 4%
|
| Madre de Dios | 4,915 | Perú, Bolivia | 4%
|
| Juruá | 6,000 | Perú, Brasil | 2%
|
| Beni | 8,900 | Bolivia | 1%
|
| Japurá | 6,000 | Brasil, Colombia | 1%
|