| Tributaries | River | % Correct |
|---|---|---|
| Yalong, Min, Chishui, Jialing, Wu, Yuan, Xiang, Han, Qingyi | Yangtze | 95%
|
| Madeira, Purús, Japurá/Caquetá, Tocantins, Araguaia, Juruá, Rio Negro | Amazon | 92%
|
| Brahmaputra, Chandan, Ramganga, Koshi, Gomti, Yamuna, Gandaki | Ganges | 92%
|
| Atbara, Blue ____, White ____, Bahr el Ghazal, Sobat, Bahr al Jhabal/ Mountain ____, Didessa | Nile | 92%
|
| Fen, Tao, Wei, Qin, Ruo Shui, Huangshui, Luo | Yellow (Huang He) | 85%
|
| Saguenay, Ottawa, Richelieu, Saint-Maurice, Manicouagan, Saint-Francois, Oswegatchie | Saint Lawrence | 84%
|
| Platte, Kansas, Milk, James, Yellowstone, White, Niobrara | Missouri | 83%
|
| Nam Khan, Tha, Nam Ou, Mun, Tonle Sap, Kok, Ruak, Nam Ngum | Mekong | 81%
|
| Tennessee, Cumberland, Wabash, Allegheny, Monongahela, Kanwha, Muskingum | Ohio | 81%
|
| Pecos, Rio Conchos, Rio Salado, San Juan, Rio Puerco, Rio Chama, Rio Alamo | Rio Grande/ Río Bravo | 77%
|
| Snake, Willamette, Kootenay, Pend Oreille, Cowlitz, Spokane, Lewis | Columbia | 75%
|
| Darling, Murrumbidgee, Goulburn, Mitta Mitta, Ovens, Campaspe, Kiewa | Murray | 75%
|
| Sava, Tisza, Prut, Siret, Drava, Olt, Inn | Danube | 74%
|
| Main, Moselle, Neckar, Erft, Thur, Aar, Moder | Rhine | 74%
|
| Durance, Saône, Arve, Drôme, Ouvèze, Eyrieux, Valserine | Rhône | 73%
|
| Paraná, Uruguay, Santa Lucía, San Juan, Luján, Salado, Samborombón | Río de la Plata | 71%
|
| Catskill Creek, Mohawk, Hoosic, Schroon, Sacandaga, Croton, Rondout Creek | Hudson | 68%
|
| Kasai, Sangha, Ubangi, Tshuapa/ Ruka, Lomami, Luvua, Aruwimi | Congo | 67%
|
| Kabompo, Cuando, Lungwebungu, Kafue, Luangwa, Shangani, Sanyati | Zambezi | 66%
|
| Oka, Kama, Vetluga, Sura, Uzola, Kazanka, Samara | Volga | 62%
|
| Sokoto, Kaduna, Benue, Anambra, Bani, Alibori, Sirba | Niger | 58%
|
| Liard, North Nahanni, Peel, Arctic Red, Keele, Mountain, Great Bear | Mackenzie | 57%
|
| Andreafsky, Innoko, Koyukuk, Tanana, Melozitna, Porcupine, White | Yukon | 53%
|
| Green, Gunnison, San Juan, Uncompahgre, Eagle, Dolores, Fraser | Colorado | 51%
|
| Stour, Wye, Teme, Avon, Usk, Vyrnwy, Rad Brook | Severn | 50%
|
| Angara, Turukhan, Nizhnyaya Tunguska, Podkamennaya Tunguska, Tuba, Sym, Selenga | Yenisei | 41%
|
| Schuylkill, Lehigh, Christina, Neversink, Musconetcong, Lackawaxen, Maurice | Delaware | 37%
|
| Padamo, Ocamo, Cunucunuma, Meta, Guaviare, Caroni, Sipapo | Orinoco | 35%
|
| Cimarron, Canadian, Neosho, Salt Fork, Verdigris, Pawnee, Walnut | Arkansas | 34%
|
| Shilka, Argun, Songhua, Zeya, Amgun, Bureya, Huma | Amur | 32%
|