17 (1)

Danube.

11 (2)

Congo and Niger.

10 (1)

Nile.

9 (2)

Rhine and Zambezi.

8 (2)

Amazon and Lake Chad.

6 (8)

Aral Sea, Ganges-Brahmaputra-Meghna, Jordan, Kura-Araks, Mekong, Tarim, Tigris and Euphrates (Shatt al Arab), and Volta.

5 (3)

La Plata, Neman, and Vistula (Wista).

4 (17)

Amur, Daugava, Elbe, Indus, Komoe, Lake Turkana, Limpopo, Lotagipi Swamp, Narva, Oder (Odra), Ogooue, Okavango, Orange, Po, Pu-Lun-T'o, Senegal, and Struma.

3 (49)

Asi (Orontes), Awash, Cavally, Cestos, Chiloango, Dnieper, Dniester, Drin, Ebro, Essequibo, Gambia, Garonne, Gash, Geba, Har Us Nur, Hari (Harirud), Helmand, Hondo, Ili (Kunes He), Incomati, Irrawaddy, Juba-Shibeli, Kemi, Lake Prespa, Lake Titicaca-Poopo System, Lempa, Maputo, Maritsa, Maroni, Moa, Neretva, Ntem, Ob, Oueme, Pasvik, Red (Song Hong), Rhone, Ruvuma, Salween, Schelde, Seine, St. John, Sulak, Torne (Tornealven), Tumen, Umbeluzi, Vardar, Volga, and Zapaleri.

2 (176)

Akpa, Alesek, Amacuro, An Nahr Al Kabirm, Artibonite, Astara Chay, Atrak, Atui, Aviles, Aysen, Baker, Bangau, Bann, Baraka, Barima, Barta, Beilun, Belize, Benito, Bia, Bidasoa, Buzi, Ca (Song-Koi), Cancoso (Lauca), Candelaria, Castletown, Catatumbo, Changuinola, Chico (Carmen Silva), Chilkat, Chira, Chiriqui, Choluteca, Chuy, Coatan Achute, Coco (Segovia), Colorado, Columbia, Comau, Corubal, Coruh, Courantyne (Corantijn), Cross, Cullen, Daoura, Dasht, Don, Douro (Duero), Dra, Elancik, Erne, Etosha/Cuvelai, Fane, Fenney, Firth, Flurry, Fly, Foyle, Fraser, Gallegos-Chico, Gauja, Goascoran, Golok, Great Scarcies, Grijalva, Guadiana, Guir, Han, Hsi (Bei Jiang), Isonzo, Jacobs, Jurado, Kaladan, Karnafauli, Klaralven, Kogilnik, Kowl-E-Namaksar, Krka, Kunene, Lagoon Mirim, Lake Fagnano, Lake Natron, Lake Ubsa-Nur, Lava (Pregel), Lielupe, Lima, Little Scarcies, Loffa, Ma, Mana-Morro, Massacre, Mataje, Mbe, Medjerda, Mino, Mira, Mississippi, Mius, Mono, Motaqua, Murgab, Naatamo, Nahr El Kebir, Negro, Nelson-Saskatchewan, Nestos, Nyanga, Olanga, Oral (Ural), Orinoco, Oued Bon Naima, Oulu, Oyupock (Oiapoque), Pakchan, Palena, Pandaruan, Parnu, Pascua, Patia, Paz, Pedernales, Prohladnaja, Puelo, Rezvaya, Rio Grande (North America), Rio Grande (South America), Roia, Rudkhaneh-ye (BahuKalat), Sabi, Saigon (Song Nha Be), Salaca, Samur, San Juan, San Martin, Sarata, Sarstun, Sassandra, Sembakung, Seno Union (Serrano), Sepik, Sixaola, Song Vam Co Dong, St. Croix, St. John, St. Lawrence, St. Paul, Stikine, Suchiate, Sujfun, Tafna, Tagus (Tejo), Taku, Tami, Tana, Tano, Terek, Tijuana, Tjeroeka/Wanggoe, Tuloma, Tumbes-Poyango, Umba, Utamboni, Valdivia, Velaka, Venta, Vijose, Vuoksa, Wadi Al Izziyah, Whiting, Yalu, Yaqui, Yelcho, Yenisey (Jenisej), Yser, Yukon, and Zarumilla.