Afon
Afon_Rhein
Afon_Donaw
Afon_Tafwys
Afon_Mississippi
Afon_Nîl
Afon_Hafren
Aber
Afon_Amazonas
Argae
Afon_Seine
Afon_Volga
Afon_Ewffrates
Rhaeadr
Afon_Dyfrdwy
Afon_Gwy
Afon_Loire
Afon_Ganga
Afon_Yangtze
Afon_Indus
Afon_Tigris
Afon_Dnieper
Afon_Ohio
Afon_Elbe
Afon_Iorddonen
Afon_Missouri
Afon_Rhône
Afon_Conwy
Afon_Meuse
Afon_Po
Afon_Wysg
Afon_Niger
Afon_Congo
Afon_Tywi
Afon_Columbia
Huang_He
Afon_Teifi
Afon_Merswy
Afon_Hudson
Afon_Colorado_(Arizona)
Rio_Grande
Afon_Tiber
Afon_St_Lawrence
Afon_Oder
Afon_Vistula
Rhyd
Afon_Taf_(Caerdydd)
Rhaeadr_Niagara
Grand_Canyon
Afon_Ebro
Afon_Dyfi
Afon_Garonne
Afon_Tagus
Afon_Amur
Rhaeadr_Victoria
Afon_Clud
Afon_Wral
Río_de_la_Plata
Afon_Brahmaputra
Afon_Douro
Afon_Paraná
Afon_Marne
Afon_Moselle
Amu_Darya
Afon_Don_(Rwsia)
Rhestr_afonydd_Cymru
Afon_Irtysh
Afon_Mekong
Afon_Main
Afon_Zambezi
Afon_Clwyd
Afon_Arkansas
Afon_Humber
Sir_Daria
Afon_Orontes
Afon_Yamuna
Afon_Saône
Afon_Trent
Afon_Orinoco
Afon_Delaware
Afon_Murray
Afon_Tuedd
Afon_Oka
Afon_Schelde
Afon_Guadalquivir
Afon_Dniester
Wadi
Afon_Sava
Hydrograffeg
Afon_Arno
Afon_Ystwyth
Afon_Neckar
Afon_Daugava
Afon_Shannon
Afon_Weser
Afon_Rubicon
Afon_Tyne
Afon_Neva
Afon_Camwy
Afon_Styx
Afon_Aldan
Afon_Mynwy
Afon_Tawe
Afon_Waal
Rhaeadrau_Iguazú
Shatt_al-Arab
Afon_Inn
Afon_Vltava
Afon_Nîl_Wen
Afon_Avon_(Bryste)
Afon_Medway
Afon_Oren
Afon_Somme
Afon_Paragwái
Afon_Angara
Rhestr_afonydd_hwyaf_y_byd
Afon_Moscfa
Afon_Yukon
Afon_Gwilun
Afon_Aare
Afon_Drava
Afon_Guadiana
Rio_Negro_(Amazonas)
Afon_IJssel
Afon_Limpopo
Afon_Niagara
Afon_Tamar
Afon_Severski_Donets
Afon_Tay
Afon_Wrwgwái
Afon_Senegal
Afon_Forth
Afon_Nîl_Las
Afon_Tefeidiad
Afon_Ruhr
Afon_Nedd
Afon_Gambia
Afon_Dwyryd
Afon_Mawddach
Afon_Tennessee
Afon_Kabul
Afon_Avon_(Swydd_Warwick)
Isafon
Afon_Derwent_(Swydd_Derby)
Comarca_del_Nalón
Afon_Cleddau
Afon_Glaslyn
Afon_Mackenzie
Afon_Neisse
Afon_Helmand
Afon_Connecticut
Afon_Pripyat
Afon_Pisuerga
Ymddoleniad
Afon_Tees
Afon_Lahn
Afon_Llwchwr
Afon_Nene
Afon_Ogwr
Afon_Boyne
Afon_Petsiora
Nederrijn
Afon_Oise
Afon_Ceiriog
Afon_Rheidol
Afon_Isère
Afon_Fraser
Afon_Detroit
Afon_São_Francisco
Afonydd_Portiwgal
Afon_Avon
Afon_Marañón
Afon_Efyrnwy
Nieuwe_Maas
Afon_Tryweryn
Afon_Iguazú
Afon_Irawadi
Afon_Biobío
Afon_Seiont
Pistyll_Rhaeadr
Afon_Aire
Afon_Rhymni
Afon_Volta
Afon_Dordogne
Afon_Tocantins
Afon_Ogwen
Anahita
Afon_Elwy
Afon_Cher
Afon_Vaal
Afon_Lek
Afon_Taf_(Sir_Gaerfyrddin)
Afon_Colorado
Afon_Life
Afon_Saar
Afon_Tunguska_Isaf
Afon_Allier
Afon_Charente
Afon_Elái
Hari_Rud
Afon_Rhondda
Afon_Dvina_Ogleddol
Afon_Sura
Afon_Darling
Afon_Teesta
Afon_Alun
Afon_Tom
Afon_Colorado_(Ariannin)
Afon_Bidasoa
Afon_Amstel
Afon_Zeya
Afon_Alaw
Afon_Mahanadi
Afon_Vienne
Afon_Chicago
Afon_Salzach
Afon_Japurá
Afon_Madeira
Afon_Aeron
Afon_Aisne
Afon_Gwyrfai
Afon_Wnion
Afon_Dee_(Swydd_Aberdeen)
Naiad_(mytholeg)
Rhaeadr_y_Rhein
Afon_Kostroma
Afon_Brazos
Afon_Llugwy
Afon_Medjerda
Afon_Cefni
Afon_Llia
Afon_Karun
Afon_Renk
Afon_Volkhov
Afon_Salawin
Afon_Aman
Afon_Afan
Afon_Kolyma
Afon_Eden_(Cumbria)
Seljalandsfoss
Tonlé_Sap
Afon_Shire
Afon_Llugwy_(Powys)
Rhaeadr_Ewynnol
Afon_Podkamennaya_Tunguska
Afon_Cherwell
Afon_Ljubljanica
Afon_Huangpu
Afon_Tarn
Afon_Goyt
Afon_Nerbioi
Afon_Acheron
Afon_Weaver
Afon_Okavango
Afon_Chao_Phraya
Afon_Samara
Afon_Doubs
Afon_Llynfi_(Pen-y-bont_ar_Ogwr)
Afon_Errobi
Afon_Adda
Afon_Reventazón
Afon_Cothi
Afon_Great_Ouse
Afon_Vézère
Afon_Gwili
Afon_Fleet
Afon_Semois
Afon_Sambre
Afon_Purus
Afon_Lot
Afon_Llobregat
Afon_Tame
Afon_Maine
Afon_Dwyfor
Afon_Smith
Afon_Mamoré
Afon_Swan
Afon_Braint
Afon_Ieithon
Afon_Dysynni
Afon_Om
Afon_Eure
Afon_Yonne
Afon_Araguaia
Afon_Nith
Afon_Twymyn
Mississippi_Delta
Ceunant
Afon_Cuch
Afon_Irfon
Afon_Ddawan
Afon_Rangitikei
Afon_Taedong
Afon_Dulas_(Powys)
Afon_Xingu
Afon_Sepik
Afon_Logone
Afon_Cam
Afon_Banwy
Afon_Ebwy
Afon_Var
Gullfoss
Afon_Fly
Afon_Cynon
Rhaeadr_Fawr
Afon_Andalién
Afon_Aude
Afon_Sarthe
Afon_Aon
Afon_Camlad
Afon_Cegin
Afon_Waikato
Afon_Santa_Cruz,_Arizona
Afon_Llyfni
Afon_Il
Afon_Meon
Afon_Vitim
Afon_Sèvre_Niortaise
Afon_Batman
Afon_Swat
Aturri
Afon_Peace
Buffalo_Bayou
Afon_Mayenne
Afon_Rangeet
Afon_Artro
Afon_Belize
Afon_Blavezh
Afon_Loir
Afon_Jefferson
Afon_Soch
Afon_Aled
Afon_Hepste
Afon_Beas
Afon_Ouse_(Swydd_Efrog)
Afon_Bîc
Afon_Clywedog_(Dyfrdwy)
Afon_Svislach
Afon_Spree
Afon_Drac
Afon_Machno
Afon_Honddu_(Mynyddoedd_Duon)
Afon_Elan
Afon_Ffraw
Afon_Nidelva
Afon_Erch
Afon_Todd
Afon_Lledr
Afon_Plym
Afon_Bani
Afon_Clun_(Swydd_Amwythig)
Afon_Leri
Afon_Nyfer
Afon_Kuta
Afon_Ouse_(Sussex)
Sianeleiddio
Afon_Tuul
Afon_Skorf
Afon_Erne
Loc
Afon_Oparara
Afon_Clywedog_(Hafren)
Afon_Ribble
Afon_Spey
Afon_Merddwr
Afon_Vasyugan
Y_Bytholwerni
Delta_Niger
Afon_Gyffin
Afon_Indre
Afon_Sirhywi
Afon_Don_(Swydd_Efrog)
Afon_Darent
Afon_Gwaun
Afon_Ewenni
Afon_Colwyn
Afon_Eden_(Gwynedd)
Afon_Ariège
Afon_Chari
Afon_Sèvre_Nantaise
Afon_Stour,_Caint
Afon_Llwyd
Afon_Ticino
Afon_Wouri
Eger_Hafren
Afon_Witham
Afon_Voronezh
Afon_Wyre_(Ceredigion)
Afon_Ure
Afon_Llynfi_(Powys)
Afon_Gardon
Afon_Garw
Afon_Iya
Afon_Don_(Swydd_Aberdeen)
Afon_Itz
Afon_Crafnant
Afon_Biya
Afon_Gallegos
Afon_Twrch_(Tawe)
Afon_Arth
Afon_Swale
Afon_Bann
Afon_Morda
Afon_Irwell
Afon_Owain
Afon_Rother_(Dwyrain_Sussex)
Rhaeadr_Dolgoch
Afon_Welland
Afon_Vyatka
Afon_Cadnant
Afon_Cerist
Afon_Mellte
Afon_Foyle
Afon_Sid
Aber_Afon_Dyfrdwy
Afon_Derwent_(Swydd_Efrog)
Afon_Viljuj
Afon_Clywedog_(Clwyd)
Afon_Carno
Afon_Cain
Afon_Dulas_(Ceredigion)
Afon_Kamchatka
Afon_Crai
Afon_Troddi
Rhaeadr_Diserth
Afon_Derwent_(Cumbria)
Afon_Ffyddion
Afon_Aube
Afon_Tura
Afon_Anafon
Afon_Senni
Afon_Dringarth
Afon_Ysgir
Afon_Clun_(De_Cymru)
Afon_Lliedi
Afon_Mole
Afon_Dulais_(Castell-nedd_Port_Talbot)
Afon_Moa
Afon_Lyvennet
Afon_Gele
Afon_Rhythallt
Afon_Swrinam
Afon_Siúr
Afon_Looe
Afon_Ysgethin
Gosen
Afon_Sawdde
Afon_Ro
Afon_Biryusa
Afon_Fawr_(Califfornia)
Afon_Gwenfro
Afon_Guadalupe
Afon_Orb
Nant_Brân
Afon_Urdazuri
Afon_Iwrch
Nant_Llech
Afon_Croco
Afon_Ouette
Afon_Honddu_(Epynt)
Rhaeadr_Multnomah
Afon_Miwl
Afon_Tarell
Afon_Eigiau
Afon_Lloer
Afon_Busento
Afon_Kondoma
Afon_Mras-Su
Afon_Oded
Gave_d'Oloron
Afon_Cère
Afon_Gus
Afon_Uy_(Irtysh)
Afon_Derwent_(Gogledd-ddwyrain_Lloegr)
Afon_Wyre_(Swydd_Gaerhirfryn)
Afon_Mama
Afon_Tregatwg
Afon_Nepa
Afon_Cayenne
Afon_Unk
Afon_Gwash
Afon_Clydach_(Abertawe)
Afon_Alph
Karrimurra
Afon_Y
Afon_Aber
Afon_Grwyne_Fawr
Sgwd_Henrhyd
Rhaeadrau_Clud
Afon_Clarach
Afon_Dulyn
Afon_Cwmnantcol
Afon_Porth-llwyd
Afon_Otira
Afon_Golygina
Afon_Nedd_Fechan
Rhaeadr_Steavenson
Rhaeadr_Bowen
Afon_Rhiangoll
Clogwyn_y_Geifr
Afon_Castletown
Bull_Run,_Virginia
Afon_Ddu
Afon_Hooker
Afon_Chwiler
Afon_Llyfnant
Abhainn_Gharadh,_Ucheldir_yr_Alban
Afon_Dyffryn_Gwyn
Afon_Gafenni
Hardraw_Force
Nant_y_Ffrith
Afon_Santa_Cruz
Nant_Cynnyd
Afon_Velinji
Afon_Cywyn
Pistyll_Cain
Afon_y_Maes
Pennpoll
Nant_Olwy
Afon_Ribble_(Gogledd_Swydd_Efrog)
Afon_Clydach_Uchaf
Afon_Llafar_(Penllyn)
Afon_Marteg
Afon_Ainí
Rhaeadr_y_Graig_Lwyd
Afon_Pasquotank
Afon_Mynach
Rhaeadr_Derwennydd
Afon_Llafar_(Carneddau)
Afon_Chelt
Afon_Cilieni