|
|
Afon
|
Hyd (km)
|
Dalgylch (km²)
|
Llif cyfartaledd (m³/eiliad)
|
Yn llifo i
|
Gwledydd yn y dalgylch
|
| 1.
|
Afon Amazonas *
|
7040
|
6915000
|
219000
|
Cefnfor Iwerydd
|
Brasil, Periw, Bolifia, Colombia, Ecwador, Feneswela.
|
| 2.
|
Nîl *
|
6671
|
3400000
|
5100
|
Y Môr Canoldir
|
Ethiopia, Eritrea, Swdan, Wganda, Tansanïa, Cenia, Rwanda, Bwrwndi, Yr Aifft, Gweriniaeth Ddemocrataidd y Congo.
|
| 3.
|
Mississippi - Missouri - Jefferson
|
6270
(6420)
|
2980000
|
16200
|
Gwlff Mecsico
|
Unol Daleithiau America, Canada
|
| 4.
|
Yangtze
(Chang Jiang)
|
6211
(5797)
|
1800000
|
31900
|
Môr Dwyrain China
|
Gweriniaeth Pobl Tsieina
|
| 5.
|
Yenisei - Angara - Selenga
|
5550
(4506)
|
2580000
|
19600
|
Môr Kara
|
Rwsia, Mongolia
|
| 6.
|
Huang He
(Yr Afon Felen)
|
5464
(4667)
|
745000
|
2571
|
Môr Bohai
(Balhae)
|
Gweriniaeth Pobl Tsieina
|
| 7.
|
Ob' - Irtysh
|
5410*
|
2990000
|
12800
|
Gwlff Ob
|
Rwsia, Casachstan, Gweriniaeth Pobl Tsieina
|
| 8.
|
Amur
(Heilong Jiang)
|
4368*
|
1855000
|
11400
|
Môr Okhotsk
|
Rwsia, Gweriniaeth Pobl Tsieina, Mongolia
|
| 9.
|
Congo
(Zaire)
|
4371
(4670)
|
3680000
|
41800
|
Cefnfor Iwerydd
|
Gweriniaeth Ddemocrataidd y Congo, Gweriniaeth Canolbarth Affrica, Angola, Gweriniaeth y Congo, Tansanïa, Camerŵn, Sambia, Bwrwndi, Rwanda
|
| 10.
|
Lena
|
4260
(4400)
|
2490000
|
17100
|
Môr Laptev
|
Rwsia
|
| 11.
|
Mackenzie - Peace - Finlay
|
4241
(5427)
|
1790000
|
10300
|
Môr Beaufort
|
Canada
|
| 12.
|
Niger
|
4167
(4138*)
|
2090000
|
9570
|
Gwlff Gini
|
Nigeria, Mali, Niger, Algeria, Gini, Camerŵn, Bwrcina Ffaso, Arfordir Ifori, Benin, Tsiad
|
| 13.
|
Mekong
(Lancang Jiang)
|
4023
|
810000
|
16000
|
Môr De China
|
Laos, Gwlad Tai, Gweriniaeth Pobl Tsieina, Cambodia, Fietnam, Myanmar
|
| 14.
|
Paraná
(Río de la Plata)
|
3998
(4700)
|
3100000
|
25700
|
Cefnfor Iwerydd
|
Brasil, Ariannin, Paragwâi, Bolifia, Wrwgwái
|
| 15.
|
Murray - Darling
|
3750
(3520)
|
1061000
|
767
|
Cefnfor y De
|
Awstralia
|
| 16.
|
Volga
|
3645*
|
1380000
|
8080
|
Môr Caspia
|
Rwsia
|
| 17.
|
Shatt al-'Arab / Arvandrud - Ewffrates
|
3596
(2992)
|
884000
|
856
|
Gwlff Persia
|
Irac, Twrci, Iran, Syria
|
| 18.
|
Purus
|
3379
(2948)
(3210)
|
63166
|
8400
|
Afon Amazonas
|
Brasil, Periw
|
| 19.
|
Madeira - Mamoré
|
3239
|
850000
|
17000
|
Afon Amazonas
|
Brasil, Bolifia, Periw
|
| 20.
|
Yukon
|
3184
|
850000
|
6210
|
Môr Bering
|
Unol Daleithiau America, Canada
|
| 21.
|
Indus
(Sindhu)
|
3180
|
960000
|
7160
|
Môr Arabia
|
Pacistan, India, Gweriniaeth Pobl Tsieina, Affganistan
|
| 22.
|
São Francisco
|
3180*
(2900)
|
610000
|
3300
|
Cefnfor Iwerydd
|
Brasil
|
| 23.
|
Syr Darya - Naryn
|
3078
|
219000
|
703
|
Môr Aral
|
Casachstan, Kirghizstan, Wsbecistan, Tagikistan
|
| 24.
|
Salawin
(Nu Jiang)
|
3060
|
324000
|
3153
|
Môr Andaman
|
Gweriniaeth Pobl Tsieina, Myanmar, Gwlad Tai
|
| 25.
|
St Lawrence - Llynnoedd Mawr
|
3058
|
1030000
|
10100
|
Gwlff St Lawrence
|
Canada, Unol Daleithiau America
|
| 26.
|
Rio Grande
|
3057
(2896)
|
570000
|
82
|
Gwlff Mecsico
|
Unol Daleithiau America, Mecsico
|
| 27.
|
Tunguska Isaf
|
2989
|
473000
|
3600
|
Yenisei
|
Rwsia
|
| 28.
|
Brahmaputra
|
2948*
|
1730000
|
19200
|
Bae Bengal
|
India, Gweriniaeth Pobl Tsieina, Nepal, Bangladesh, Bhwtan
|
| 29.
|
Donaw
|
2850*
|
817000
|
7130
|
Y Môr Du
|
Yr Almaen, Awstria, Slofacia, Hwngari, Croatia, Serbia, Bwlgaria, Rwmania, Moldafia, Wcrain
|
| 30.
|
Afon Ewffrates
|
2760
|
765831
|
818
|
Gwlff Persia
|
Twrci, Syria, Irac
|
| 31.
|
Tocantins
|
2699
|
1400000
|
13598
|
Cefnfor Iwerydd, Afon Amazonas
|
Brasil
|
| 32.
|
Zambezi
(Zambesi)
|
2693*
|
1330000
|
4880
|
Culfor Mosambîc
|
Sambia, Angola, Simbabwe, Mosambic, Malawi, Tansanïa, Namibia, Botswana
|
| 33.
|
Viljuj
|
2650
|
454000
|
1480
|
Lena
|
Rwsia
|
| 34.
|
Araguaia
|
2627
|
358125
|
6172
|
Tocantins
|
Brasil
|
| 35.
|
Amu Darya
|
2620
|
534739
|
1400
|
Môr Aral
|
Wsbecistan, Tyrcmenistan, Tajicistan, Affganistan
|
| 36.
|
Caquetá
(Rio Yapurá neu Japurá)
|
2615*
|
242259
|
6000
|
Afon Amazonas
|
Brasil, Colombia
|
| 37.
|
Nelson - Saskatchewan
|
2570
|
1093000
|
2575
|
Bae Hudson
|
Canada
|
| 38.
|
Paragwâi
(Rio Paragwâi)
|
2549
|
900000
|
4300
|
Paraná
|
Brasil, Paragwâi, Bolifia, Ariannin
|
| 39.
|
Kolyma
|
2513
|
644000
|
3800
|
Môr Siberia Dwyreiniol
|
Rwsia
|
| 40.
|
Ganga
|
2510
|
907000
|
12037
|
Brahmaputra, Bae Bengal
|
India, Bangladesh, Nepal
|
| 41.
|
Pilcomayo
|
2500
|
270000
|
|
Paragwâi
|
Paragwâi, Ariannin, Bolifia
|
| 42.
|
Ob' Uchaf
|
2490
|
|
|
Ob
|
Rwsia
|
| 43.
|
Išim
|
2450
|
177000
|
56
|
Irtyš
|
Casachstan, Rwsia
|
| 44.
|
Jurua
|
2410
|
200000
|
6000
|
Afon Amazonas
|
Periw, Brasil
|
| 45.
|
Wral
|
2428
|
237000
|
475
|
Môr Caspia
|
Russia, Casachstan
|
| 46.
|
Arkansas
|
2348
|
505000
(435122)
|
|
Mississippi
|
Unol Daleithiau America
|
| 47.
|
Ubangi - Uele
|
2300
|
|
|
Congo
|
Gweriniaeth Ddemocrataidd y Congo, Gweriniaeth Canolbarth Affrica
|
| 48.
|
Olenëk
|
2292
|
|
|
Môr Laptev
|
Rwsia
|
| 49.
|
Dnieper
|
2287
|
516300
|
1670
|
Môr Du
|
Rwsia, Bielorussia, Wcrain
|
| 50.
|
Aldan
|
2273
|
|
|
Lena
|
Rwsia
|
| 51.
|
Rio Negro
|
2250
|
|
|
Afon Amazonas
|
Brasil, Feneswela, Colombia
|
| 52.
|
Columbia
|
2250 (1953)
|
415211
|
7400
|
Cefnfor Tawel
|
Unol Daleithiau, Canada
|
| 53.
|
Colorado
|
2333
|
390000
|
1200
|
Gwlff Califfornia
|
Unol Daleithiau, Mecsico
|
| 54.
|
Pearl - Xi Jiang
|
2200
|
437000
|
13600
|
Mar Cinese Meridionale
|
Tsieina, Fietnam
|
| 55.
|
Red
|
2188
|
|
|
Mississippi
|
Unol Daleithiau
|
| 56.
|
Irrawaddy
(Irrawaddi neu Ayeyarwady )
|
2170
|
411000
|
13000
|
Môr Andaman
|
Myanmar
|
| 57.
|
Kasai
|
2153
|
|
|
Congo
|
Angola, Gweriniaeth Ddemocratiaidd y Congo
|
| 58.
|
Ohio - Allegheny
|
2102
|
490603
|
|
Mississippi
|
Unol Daleithiau
|
| 59.
|
Orinoco
|
2101
|
880000
|
30000
|
Cefnfor Iwerydd
|
Feneswela, Colombia
|
| 56.
|
Tarim
|
2100
|
|
|
Lop Nor
|
Gweiniaeth Pobl Tsieina
|
| 61.
|
Xingu
|
2100
|
|
|
|
Brasil
|
| 62.
|
Oren
|
2092
|
|
|
Cefnfor Iwerydd
|
De Affrica, Namibia, Botswana, Lesotho
|
| 63.
|
Salado Ogleddol
|
2010
|
|
|
Paraná
|
Ariannin
|
| 64.
|
Vitim
|
1978
|
|
|
Lena
|
Rwsia
|
| 65.
|
Tigris
|
1950
|
|
|
Shatt al-'Arab
|
Twrci, Irac, Syria, Iran
|
| 66.
|
Songhua
|
1927
|
|
|
Amur
|
Gweriniaeth Pobl Tsieina
|
| 67.
|
Tapajós
|
1900
|
|
|
|
Brasil
|
| 68.
|
Don
|
1870
|
|
|
Môr Azov
|
Russia
|
| 69.
|
Angara
|
1865
|
|
|
Yenisei
|
Rwsia
|
| 70.
|
Pechora
|
1809
|
322000
|
|
Môr Barents
|
Rwsia
|
| 71.
|
Kama
|
1805
|
507000
|
|
Volga
|
Russia
|
| 72.
|
Afon Limpopo
|
1800
|
|
|
Cefnfor India
|
Mosambic, Simbabwe, De Affrica, Botswana
|
| 73.
|
Guaporé
|
1749
|
|
|
Mamoré
|
Brasil, Bolifia
|
| 74.
|
Indigirka
|
1726
|
|
|
Mare della Siberia Orientale
|
Rwsia
|
| 75.
|
Snake
|
1670
|
|
|
Columbia
|
Unol Daleithiau America
|
| 76.
|
Senegal
|
1641
|
419659
|
|
Cefnfor Iwerydd
|
Senegal, Mali, Mauritania
|
| 77.
|
Wrwgwái
|
1610
|
|
|
Cefnfor Iwerydd
|
Wrwgwái, Ariannin, Brasil
|
| 78.
|
Afon Nîl Las
|
1600
|
|
|
Nîl
|
Ethiopia, Swdan
|
| 79.
|
Churchill
|
1600
|
|
|
Bae Hudson
|
Canada
|
| 80.
|
Chatanga
|
1600
|
|
|
Môr Laptev
|
Rwsia
|
| 81.
|
Okavango
|
1600
|
|
|
Delta Okavango
|
Namibia, Angola, Botswana
|
| 82.
|
Volta
|
1600
|
|
|
Gwlff Gini
|
Ghana, Bwrcina Ffaso, Togo, Costa d'Avorio, Benin
|
| 83.
|
Beni
|
1599
|
|
|
Madeira
|
Bolifia
|
| 84.
|
Platte
|
1594
|
|
|
Missouri
|
Unol Daleithiau
|
| 85.
|
Tobol
|
1591
|
|
|
Irtysh
|
Casachstan, Rwsia
|
| 86.
|
Jubba - Uebi Scebeli
|
1580*
|
|
|
Cefnfor India
|
Ethiopia, Somalia
|
| 87.
|
Putumayo
|
1575
|
|
|
|
Brasil, Periw, Colombia, Ecwador
|
| 88.
|
Magdalena
|
1550
|
|
|
Môr y Caribî
|
Colombia
|
| 89.
|
Han
|
1532
|
|
|
Yangtze
|
Tsieina
|
| 90.
|
Lomami
|
1500
|
|
|
Congo
|
Gweriniaeth Ddemocrataidd y Congo
|
| 91.
|
Oka
|
1500
|
|
|
Volga
|
Rwsia
|
| 92.
|
Pecos
|
1490
|
|
|
Rio Grande
|
Unol Daleithiau
|
| 93.
|
Yenisei uchaf
|
1480
|
|
|
Yenisei
|
Rwsia, Mongolia
|
| 94.
|
Godavari
|
1465
|
|
|
Bae Bengal
|
India
|
| 95.
|
Colorado (Texas)
|
1438
|
|
|
Gwlff Mecsico
|
Unol Daleithiau
|
| 96.
|
Río Grande (Guapay)
|
1438
|
|
|
Ichilo
|
Bolifia
|
| 97.
|
Belaya
|
1420
|
|
|
Kama
|
Russia
|
| 98.
|
Cooper - Barcoo
|
1420
|
|
|
Llyn Eyre
|
Awstralia
|
| 99.
|
Marañón
|
1415
|
|
|
|
Periw
|
| 100.
|
Dniester
|
1411 (1352)
|
|
|
Môr Du
|
Wcrain, Moldafia
|
| 101.
|
Benue
|
1400
|
|
|
Niger
|
Camerŵn, Nigeria
|
| 102.
|
Ili
(Yili)
|
1400
|
|
|
Llyn Baikhal
|
Tsieina, Casachstan
|
| 103.
|
Warburton - Georgina
|
1400
|
|
|
Llyn Eyre
|
Awstralia
|
| 104.
|
Yamuna
|
1376
|
|
|
Ganga
|
India
|
| 105.
|
Sutlej
|
1370
|
|
|
Chenab
|
Tsieina, India, Pacistan
|
| 106.
|
Vyatka
|
1370
|
|
|
Kama
|
Rwsia
|
| 107.
|
Fraser
|
1368
|
|
|
Cefnfor Tawel
|
Canada
|
| 108.
|
Kura
|
1364
|
|
|
Môr Caspia
|
Aserbaijan, Georgia, Armenia, Twrci, Iran
|
| 109.
|
Rio Grande (Paraná)
|
1360
|
|
|
Paraná
|
Brasile
|
| 110.
|
Brazos
|
1352
|
|
|
Gwlff Mecsico
|
Unol Daleithiau
|
| 111.
|
Liao
|
1345
|
|
|
Môr Bohai
|
Cina
|
| 112.
|
Yalong
|
1323
|
|
|
Yangtze
|
Tsieina
|
| 113.
|
Iguazú
|
1320
|
|
|
Paraná
|
Brasil, Ariannin
|
| 114.
|
Olëkma
|
1320
|
|
|
Lena
|
Rwsia
|
| 115.
|
Rhein
|
1320
|
144055
|
|
Môr y Gogledd
|
Yr Almaen, Ffrainc, Y Swistir, Yr Iseldiroedd, Awstria, Lwcsembwrg, Liechtenstein
|
| 116.
|
Krishna
|
1300
|
|
|
Bae Bengal
|
India
|
| 117.
|
Iriri
|
1300
|
|
|
Afon Xingu
|
Brasil
|
| 118.
|
Narmada
|
1289
|
|
|
Môr Arabia
|
India
|
| 119.
|
Ottawa
|
1271
|
|
|
Afon St Lawrence
|
Canada
|
| 120.
|
Zeja
|
1242
|
|
|
Amur
|
Rwsia
|
| 121.
|
Juruena
|
1240
|
|
|
Tapajós
|
Brasil
|
| 122.
|
Mississippi uchaf
|
1236
|
|
|
Mississippi
|
Unol Daleithiau
|
| 123.
|
Athabasca
|
1231
|
|
|
Mackenzie
|
Canada
|
| 124.
|
Canadian
|
1223
|
|
|
Arkansas
|
Unol Daleithiau
|
| 125.
|
North Saskatchewan
|
1220
|
|
|
Saskatchewan
|
Canada
|
| 126.
|
Vaal
|
1210
|
|
|
Orange
|
De Affrica
|
| 127.
|
Shire
|
1200
|
|
|
Zambezi
|
Mosambic, Malawi
|
| 126.
|
Nen
(Nonni)
|
1190
|
|
|
Songhua
|
Tsieina
|
| 127.
|
Green
|
1175
|
|
|
Colorado
|
Unol Daleithiau
|
| 128.
|
Milk
|
1173
|
|
|
Missouri
|
Unol Daleithiau, Canada
|
| 129.
|
Elbe
|
1162*
|
|
|
Môr y Gogledd
|
Yr Almaen, Gweriniaeth Tsiec
|
| 130.
|
Chindwin
|
1158
|
|
|
Irrawaddy
|
Myanmar
|
| 131.
|
James
|
1143
|
|
|
Missouri
|
Unol Daleithiau
|
| 131.
|
Kapuas
|
1143
|
|
|
Môr De Isieina
|
Indonesia
|
| 133.
|
Helmand
|
1130
|
|
|
Hamun-i-Helmand
|
Affganistan, Iran
|
| 133.
|
Madre de Dios
|
1130
|
|
|
Madeira
|
Periw, Bolifia
|
| 133.
|
Tietê
|
1130
|
|
|
Paraná
|
Brasil
|
| 133.
|
Vycegda
|
1130
|
|
|
Dvina Settentrionale
|
Rwsia
|
| 137.
|
Sepik
|
1126
|
77700
|
|
Cefnfor Tawel
|
Papua Gini Newydd, Indonesia
|
| 138.
|
Cimarron
|
1123
|
|
|
Arkansas
|
Unol Daleithiau
|
| 139.
|
Anadyr'
|
1120
|
|
|
Gwlff Anadyr'
|
Rwsia
|
| 140.
|
Liard
|
1115
|
|
|
Mackenzie
|
Canada
|
| 141.
|
White
|
1102
|
|
|
Mississippi
|
Unol Daleithiau
|
| 142.
|
Huallaga
|
1100
|
|
|
Marañón
|
Periw
|
| 143.
|
Gambia
|
1094
|
|
|
Cefnfor Iwerydd
|
Gambia, Senegal, Gini
|
| 144.
|
Chenab
|
1086
|
|
|
Indus
|
India, Pacistan
|
| 145.
|
Yellowstone
|
1080
|
|
|
Missouri
|
Unol Daleithiau
|
| 146.
|
Donets
|
1078 (1053)
|
|
|
Don
|
Wcrain, Rwsia
|
| 147.
|
Bermejo
|
1050
|
|
|
Paragwâi
|
Ariannin, Bolifia
|
| 147.
|
Fly
|
1050
|
|
|
Gwlff Papua
|
Papua Gini Newydd, Indonesia
|
| 147.
|
Guaviare
|
1050
|
|
|
Orinoco
|
Colombia
|
| 147.
|
Kuskokwim
|
1050
|
|
|
Môr Bering
|
Unol Daleithiau
|
| 151.
|
Tennessee
|
1049
|
|
|
Ohio
|
Unol Daleithiau
|
| 152.
|
Daugava
|
1020
|
|
|
Gwlff Riga
|
Lithwania, Belarws, Russia
|
| 153.
|
Gila
|
1015
|
|
|
Colorado
|
Unol Daleithiau
|
| 154.
|
Vistula
|
1014
|
|
|
Y Môr Baltig
|
Gwlad Pwyl
|
| 155.
|
Loire
|
1012
|
|
|
Cefnfor yr Iwerydd
|
Ffrainc
|
| 156.
|
Essequibo
|
1010
|
|
|
Oceano Atlantico
|
Gaiana
|
| 156.
|
Chopër
|
1010
|
|
|
Don
|
Rwsia
|
| 158.
|
Tagus
|
1006
|
|
|
Cefnfor Iwerydd
|
Sbaen, Portiwgal
|
| 159.
|
Colorado (Ariannin)
|
1000
|
|
|
Cefnfor Iwerydd
|
Ariannin
|
