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100 longest river systems in the world

Since there is different information on river lengths in different sources, in some cases very approximate or average lengths are given

List format: approx. length in km | rank number | river system ~~~> outflow

• 6650 1 Nile–White Nile–Kagera–Nyabarongo–Mwogo–Rukarara ~~~> Mediterranean
  
• 6400 2 Amazon–Ucayali–Tambo–Ene–Mantaro ~~~> Atlantic Ocean
  
• 6300 3 Yangtze–Jinsha–Tongtian–Dangqu ~~~> East China Sea
  
• 6275 4 Mississippi–Missouri–Jefferson–Beaverhead–Red Rock–Hell Roaring ~~~> Gulf of Mexico
  
• 5539 5 Yenisey–Angara–Selenga–Ider ~~~> Kara Sea
  
• 5464 6 Yellow River (Huang He) ~~~> Bohai Sea
  
• 5410 7 Ob–Irtysh ~~~> Gulf of Ob
  
• 4880 8 Río de la Plata–Paraná–Rio Grande ~~~> Río de la Plata
  
• 4700 9 Congo–Lualaba-Luvua-Luapula-Chambeshi (Zaïre) ~~~> Atlantic Ocean
  
• 4444 10 Amur–Argun (Heilong Jiang) ~~~> Sea of Okhotsk
  
• 4400 11 Lena ~~~> Laptev Sea
  
• 4350 12 Mekong (Lancang Jiang) ~~~> South China Sea
  
• 4241 13 Mackenzie–Slave–Peace–Finlay ~~~> Beaufort Sea
  
• 4200 14 Niger ~~~> Gulf of Guinea
  
• 3969 15 Brahmaputra–Yarlung Tsangpo ~~~> Ganges
  
• 3672 16 Murray–Darling–Culgoa–Balonne–Condamine ~~~> Southern Ocean
  
• 3650 17 Tocantins–Araguaia ~~~> Atlantic Ocean (Marajó Bay), Amazon Delta
  
• 3645 18 Volga ~~~> Caspian Sea
  
• 3596 19 Shatt al-Arab–Euphrates–Murat ~~~> Persian Gulf
  
• 3380 20 Madeira–Mamoré–Grande–Caine–Rocha ~~~> Amazon
  
• 3211 21 Purús ~~~> Amazon
• 3185 22 Yukon ~~~> Bering Sea
• 3180 23/24 Indus–Sênggê Zangbo ~~~> Arabian Sea
• 3180 23/24 São Francisco ~~~> Atlantic Ocean
  
• 3078 25 Syr Darya–Naryn ~~~> Aral Sea
  
• 3060 26 Salween (Nu Jiang) ~~~> Andaman Sea
  
• 3058 27 Saint Lawrence–Niagara–Detroit–Saint Clair–Saint Marys–Saint Louis–North (Great Lakes) ~~~> Gulf of Saint Lawrence
  
• 3057 28 Rio Grande ~~~> Gulf of Mexico
  
• 2989 29 Lower Tunguska (Nizhnyaya Tunguska) ~~~> Yenisei
  
• 2945 30 Colorado-Green (western US) ~~~> Gulf of California
  
• 2888 31 Danube–Breg (Donau, Dunăre, Duna, Dunav, Dunaj) ~~~> Black Sea
  
• 2809 32 Irrawaddy River–N'Mai River–Dulong River–Kelaoluo–Gada Qu ~~~> Andaman Sea
  
• 2740 33 Zambezi (Zambesi) ~~~> Mozambique Channel
  
• 2720 34 Vilyuy ~~~> Lena
  
• 2704 35 Padma-Ganges-Alaknanda (Ganga) ~~~> Bay of Bengal
  
• 2620 36 Amu Darya–Panj ~~~> Aral Sea
  
• 2615 37 Japurá (Caquetá) ~~~> Amazon
  
• 2570 38 Nelson–Saskatchewan–South Saskatchewan–Bow ~~~> Hudson Bay
  
• 2549 39 Paraguay (Rio Paraguay) ~~~> Paraná
  
• 2513 40 Kolyma ~~~> East Siberian Sea
  
• 2500 41 Pilcomayo ~~~> Paraguay
  
• 2490 42 Upper Ob–Katun ~~~> Ob
  
• 2450 43 Ishim ~~~> Irtysh
  
• 2432 44 Orange ~~~> Atlantic Ocean
  
• 2428 45 Ural ~~~> Caspian Sea
  
• 2410 46 Juruá ~~~> Amazon
  
• 2348 47 Arkansas ~~~> Mississippi
  
• 2309 48 Songhua ~~~> Amur
  
• 2292 49 Olenyok ~~~> Laptev Sea
  
• 2287 50 Dnieper ~~~> Black Sea
  
• 2273 51 Aldan ~~~> Lena
  
• 2270 52 Ubangi–Uele ~~~> Congo
  
• 2250 53/54 Negro ~~~> Amazon
  
• 2250 53/54 Columbia-Snake ~~~> Pacific Ocean
  
• 2210 55 Tapajós-Teles Pires ~~~> Amazon
  
• 2200 56 Pearl–Xi-Xun-Qian-Hongshui-Nanpan ~~~> South China Sea
  
• 2188 57 Red (USA) ~~~> Mississippi
  
• 2153 58 Kasai ~~~> Congo
  
• 2102 59 Ohio–Allegheny ~~~> Mississippi
  
• 2101 60 Orinoco ~~~> Atlantic Ocean
  
• 2100 61/62 Tarim ~~~> Lop Nur
  
• 2100 61/62 Xingu ~~~> Amazon
  
• 2064 63 Jubba–Shebelle ~~~> Indian Ocean
  
• 2060 64 Brazos-Double Mountain Fork-North Fork-Blackwater Draw ~~~> Gulf of Mexico
  
• 2010 65 Northern Salado ~~~> Paraná
  
• 2005 66 Içá (Putumayo) ~~~> Amazon
  
• 1978 67 Vitim ~~~> Lena
  
• 1974 68 Chenab ~~~> Indus
  
• 1950 69 Tigris ~~~> Shatt al-Arab
  
• 1870 70 Don ~~~> Sea of Azov
  
• 1865 71 Stony Tunguska (Podkamennaya Tunguska) ~~~> Yenisey
  
• 1809 72 Pechora ~~~> Barents Sea
  
• 1805 73 Kama ~~~> Volga
  
• 1800 74 Limpopo ~~~> Indian Ocean
  
• 1799 75 Chulym ~~~> Ob
  
• 1760 76 Guaviare ~~~> Orinoco
  
• 1737 77 Marañón ~~~> Amazon
  
• 1726 78 Indigirka ~~~> East Siberian Sea
  
• 1690 79 Platte ~~~> Missouri
  
• 1641 80 Senegal ~~~> Atlantic Ocean
  
• 1636 81 Khatanga–Kotuy ~~~> Laptev Sea
  
• 1634 82 Upper Jubba-Ganale Dorya ~~~> Jubba River
  
• 1610 83 Uruguay ~~~> Atlantic Ocean
  
• 1609 84 Churchill ~~~> Hudson Bay
  
• 1600 85/86/87 Blue Nile ~~~> Nile
  
• 160085/86/87 Okavango (Cubango) ~~~> Okavango Delta
  
• 160085/86/87 Volta ~~~> Gulf of Guinea
  
• 1599 88 Beni ~~~> Madeira
  
• 1592 89 Shilka-Onon ~~~> Amur
  
• 1591 90 Tobol ~~~> Irtysh
  
• 1590 91 Alazeya ~~~> East Siberian Sea
  
• 1576 92 Kafue ~~~> Zambezi
  
• 1571 93 Yalong ~~~> Yangtze
  
• 1550 94 Magdalena ~~~> Caribbean Sea
  
• 1532 95 Han ~~~> Yangtze
  
• 1515 96 Kura/Mt'k'vari ~~~> Caspian Sea
  
• 1500 97/98 Oka ~~~> Volga
  
• 150097/98 Upper Murray ~~~> Lower Murray
  
• 1492 99 Yana-Sartang ~~~> Laptev Sea
  
• 1490100 Pecos ~~~> Rio Grande

Source: Wikipedia

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