🇨🇭 Aare
🇫🇷 Alagnon → Allier
🇺🇸 Allegheny → Ohio
🇫🇷 Allier 🏊‍♂️ → Loire
🇱🇺 Alzette
🇳🇱 Amstel → IJ
🇺🇸 Anacostia → Potomac
🇪🇸 Anoia → Llobregat
🇺🇸 Appomattox → James
🇺🇸 Arkansas
🇫🇷 Arly
🇫🇷 Artière
🇫🇷 Arve → Rhône
🇫🇷 Auzon
🇬🇧 Avon
🇺🇸 Baker → Skagit
🇺🇸 Bass
🇺🇸 Batten Kill → Hudson
🇺🇸 Bear → Willapa Bay
🇪🇸 Besòs → Mediterranean
🇺🇸 Blackwater
🇩🇪 Blies → Saar
🇪🇹 Blue Nile
🇺🇸 Bogachiel
🇺🇸 Bone → Willapa Bay
🇹🇷 Bosporus
🇨🇦 Bow
🇺🇸 Buffalo Creek → Susquehanna
🇺🇸 Bush Kill
🇺🇸 Byram → Atlantic
🇺🇸 Calawah
🇺🇸 Canisteo → Tioga
🇺🇸 Cascade → Skagit
🇺🇸 Cayuga Inlet → Cayuga Lake
🇫🇷 Célé
🇫🇷 Cère
🇹🇭 Chao Phraya
🇺🇸 Charles → Boston Harbor
🇺🇸 Cheesequake Creek → Atlantic
🇺🇸 Chehalis → Pacific
🇺🇸 Chemung
🇫🇷 Cher
🇺🇸 Chicago → Lake Michigan
🇺🇸 Chicopee
🇧🇪 Chiers
🇺🇸 Chinook → Columbia
🇪🇸 Cinca
🇺🇸 Clackamas → Willamette
🇺🇸 Clallam → Juan de Fuca
🇺🇸 Cochecho → Piscataqua
🇺🇸 Cohocton → Chemung
🇬🇧 Colne → Thames
🇺🇸 Colorado
🇺🇸 Columbia → Pacific
🇺🇸 Conestoga
🇺🇸 Conewago
🇺🇸 Connecticut
🇺🇸 Connetquot → Atlantic
🇺🇸 Cowanesque → Tioga
🇺🇸 Cowlitz → Columbia
🇺🇸 Croton → Hudson
🇦🇹 Danube 🏊‍♂️
🇵🇦 Darien 🚤 → Pacific
🇱🇻 Daugava → Baltic
🇺🇸 Deerfield
🇺🇸 Delaware
🇲🇩 Dniester
🇫🇷 Dordogne
🇵🇹 Douro → Atlantic
🇦🇪 Dubai Creek → Persian Gulf
🇺🇸 Dungeness
🇺🇸 Duwamish → Puget Sound
🇧🇪 Dyle
🇪🇸 Ebro
🇩🇪 Elbe
🇺🇸 Elizabeth → Arthur Kill
🇺🇸 Elizabeth → Atlantic
🇺🇸 Elwha
🇺🇸 Esopus Creek → Hudson
🇫🇷 Essonne → Seine
🇺🇸 Exeter → Squamscott
🇺🇸 Farm → Atlantic
🇺🇸 Farmington
🇺🇸 Fishing Creek → Susquehanna
🇮🇸 Fjaðrá 🏊‍♂️ → Skaftá
🏴󠁧󠁢󠁳󠁣󠁴󠁿 Forth
🇬🇲 Gambia → Atlantic
🇫🇷 Garonne
🇺🇸 Genesee → Lake Ontario
🇨🇦 Grand
🇺🇸 Green 🛶 → Colorado
🇺🇸 Hackensack → Newark Bay
🇰🇷 Han
🇺🇸 Hoh → Pacific
🇺🇸 Hoko → Juan de Fuca
🇳🇱 Hollands Diep → North Sea
🇺🇸 Hood → Columbia
🇺🇸 Hoosic → Hudson
🇧🇪 Houille → Meuse
🇺🇸 Housatonic → Atlantic
🇺🇸 Hudson → New York Harbor
🇺🇸 Humptulips → Pacific
🇮🇸 Hvítá
🇳🇱 IJssel
🇧🇪 IJzer → North Sea
🇺🇸 Ipswich → Atlantic
🇫🇷 Isère
🇧🇬 Iskar
🇪🇸 Jalón → Ebro
🇺🇸 James → Atlantic
🇮🇱 Jordan → Dead Sea
🇺🇸 Juniata
🇺🇸 Kalama → Columbia
🇺🇸 Kennebunk → Atlantic
🇺🇸 Kinderhook → Hudson
🇬🇧 Lagan → Irish Sea
🇺🇸 Lehigh
🇦🇹 Leitha → Danube
🇧🇪 Lesse → Meuse
🇺🇸 Lewis → Columbia
🇪🇸 Llobregat → Mediterranean
🇫🇷 Loing → Seine
🇫🇷 Loire
🇫🇷 Lot
🇺🇸 Lycoming → Susquehanna
🇧🇪 Lys → Sheldt
🇩🇪 Main
🇺🇸 Manasquan → Atlantic
🇪🇸 Manzanares
🇺🇸 Mamaroneck → Atlantic
🇫🇷 Marne → Seine
🇺🇸 Mattaponi
🇺🇸 Merrimack → Atlantic
🇺🇸 Metedeconk → Atlantic
🇫🇷 Meuse → North Sea
🇺🇸 Miami → Atlantic
🇺🇸 Miami → Pacific
🇧🇦 Miljacka
🇺🇸 Mill → Atlantic
🇺🇸 Mississippi
🇺🇸 Missouri → Mississippi
🇧🇯 Mono → Atlantic
🇺🇸 Monocacy
🇺🇸 Monongahela → Ohio
🇲🇪 Morača
🇨🇿 Morava → Danube
🇫🇷 Moselle
🇺🇸 Mousam → Atlantic
🇺🇸 Mullica → Atlantic
🇦🇹 Mur
🇦🇹 Mürz → Mur
🇺🇸 Musconetcong
🇺🇸 Mystic
🇺🇸 Nansemond
🇪🇪 Narva
🇺🇸 Naselle → Willapa Bay
🇺🇸 Nashua → Merrimack
🇵🇱 Narew → Vistula
🇺🇸 Naugatuck → Housatonic
🇺🇸 Navesink → Atlantic
🇺🇸 Nehalem → Pacific
🇺🇸 Nemah → Willapa Bay
🇧🇪 Nete
🇷🇺 Neva → Gulf of Finland
🇺🇸 Neversink → Delaware
🇺🇸 Newtown Creek → East River
🇨🇦 Niagara → Lake Ontario
🇺🇸 Niawiakum → Willapa Bay
🇳🇱 Nieuwe Waterweg → North Sea
🇲🇱 Niger 🛶
🇪🇬 Nile → Mediterranean
🇺🇸 Ohio
🇫🇷 Oise → Seine
🇫🇷 Orne
🇯🇵 Ōta
🇫🇷 Othain
🇱🇺 Our → Sauer
🇺🇸 Overpeck → Hackensack
🇺🇸 Oyster → Atlantic
🇺🇸 Palix → Willapa Bay
🇺🇸 Pamunkey
🇺🇸 Passaic → Newark Bay
🇺🇸 Pawcatuck → Atlantic
🇺🇸 Peconic‍ → Flanders Bay
🇺🇸 Pecos
🇺🇸 Pequabuck
🇺🇸 Perdido → Gulf of Mexico
🇺🇸 Piscataqua → Atlantic
🇮🇹 Po → Adriatic
🇺🇸 Potomac 🛶
🇷🇴 Prut → Danube
🇫🇷 Puiseaux → Seine
🇺🇸 Pysht
🇺🇸 Quaboag
🇺🇸 Quinebaug
🇺🇸 Quinnipiac → Atlantic
🇺🇸 Rahway 🏊‍♂️ → Arthur Kill
🇺🇸 Ramapo
🇺🇸 Rappahannock
🇺🇸 Raritan → Atlantic
🇮🇸 Reykjadalur
🇫🇷 Rhine → North Sea
🇫🇷 Rhône ⛲️ → Mediterranean
🇺🇸 Rio Grande
🇺🇸 Rio Grande
🇺🇸 Rippowam → Atlantic
🇺🇸 Robinsons Branch → Rahway
🇺🇸 Rock Creek → Potomac
🇺🇸 Rondout → Hudson
🇩🇪 Rur
🇷🇺 Russian
🇩🇪 Saar
🇺🇸 Saco → Atlantic
🇨🇦 St. Laurence
🇸🇳 Saloum → Atlantic
🇦🇹 Salzach
🇧🇪 Sambre → Meuse
🇺🇸 San Gregorio → Pacific
🇺🇸 Sandy → Columbia
🇫🇷 Saône → Rhône
🇱🇺 Sauer
🇺🇸 Sauk → Skagit
🇷🇸 Sava → Danube
🇫🇷 Scarpe
🇺🇸 Schuylkill → Delaware
🇫🇷 Seine → English Channel
🇺🇸 Sekiu → Juan de Fuca
🇺🇸 Seneca ⛲️
🇸🇳 Senegal → Atlantic
🇧🇪 Senne
🏴󠁧󠁢󠁷󠁬󠁳󠁿 Severn → Bristol Channel
🇺🇸 Shark → Atlantic
🇳🇱 Sheldt → North Sea
🇺🇸 Shenandoah → Potomac
🇺🇸 Rockaway
🇺🇸 Shepaug
🇫🇷 Sioule
🇮🇸 Skaftá → Atlantic
🇺🇸 Skagit
🇮🇸 Skógá → Atlantic
🇺🇸 Skookumchuck → Chehalis
🇺🇸 Snohomish → Puget Sound
🇺🇸 Sol Duc
🇫🇷 Somme
🇺🇸 Souhegan → Merrimack
🇩🇪 Spree
🇺🇸 Squamscott → Atlantic
🇺🇸 Still → Farmington
🇺🇸 Stillaguamish
🇺🇸 Suiattle → Sauk
🇺🇸 Susquehanna → Chesapeake
🇨🇿 Svitava → Svratka
🇨🇿 Svratka
🇵🇹 Tagus → Atlantic
🇰🇷 Tancheon → Han
🇫🇷 Tarne
🇺🇸 Taunton
🇬🇧 Thames
🇺🇸 Thames → Atlantic
🇨🇿 Thaya → Morava
🇺🇸 Tillamook → Pacific
🇺🇸 Tioga → Chemung
🇭🇺 Tisza
🇺🇸 Toutle → Cowlitz
🇬🇧 Tyne
🇺🇦 Uzh
🇫🇷 Var → Mediterranean
🇲🇰 Vardar
🇫🇷 Vilaine
🇨🇭 Vispa → Rhône
🇵🇱 Vistula
🇨🇿 Vltava
🇷🇺 Volga
🇺🇸 Wa’atch → Pacific
🇺🇸 Walloomsac → Hoosic
🇨🇦 Welland → Niagara
🇺🇸 West → Atlantic
🇦🇹 Wien → Danube
🇺🇸 Willamette → Columbia
🇺🇸 Willapa → Willapa Bay
🇺🇸 Willimantic
🇺🇸 Wilson → Pacific
🇱🇺 Wiltz
🇬🇧 Wraysbury → Colne
🏴󠁧󠁢󠁷󠁬󠁳󠁿 Wye
🇺🇸 York → Atlantic
🇮🇸 Þjórsá
🇮🇸 Kúðafljót

---

🇧🇷 Amazon
🇺🇸 Androscoggin
🇳🇬 Benué
🇪🇸 Bidasoa
🇺🇸 Bosque
🇺🇸 Brazos
🇵🇱 Bug
🇺🇸 Caloosahatchee
🇨🇩 Congo
🇺🇦 Dnieper
🇺🇦 Don
🇩🇪 Düssel
🇧🇪 Dyle
🇪🇸 Ebro
🇮🇶 Euphrates
🇵🇬 Fly
🇨🇦 Fraser
🇮🇳 Ganges
🇪🇸 Guadalquivir
🇪🇸 Guadiana
🇮🇳 Indus
🇷🇼 Kagera
🇺🇸 Kissimmee
🇷🇺 Lena
🇿🇦 Limpopo
🇻🇳 Mekong
🇬🇪 Mtkvari
🇵🇱 Neisse
🇱🇹 Neman
🇪🇸 Nervión
🇷🇺 Ob
🇩🇪 Oder
🇿🇦 Orange
🇻🇪 Orinoco
🇵🇭 Pasig
🇩🇪 Ruhr
🇧🇪 Rupel
🇹🇿 Ruvubu
🇷🇼 Ruzizi
🇩🇪 Salle
🇰🇵 Taedong
🇮🇶 Tigris
🇺🇸 Tuolumne
🇿🇦 Vaal
🇬🇭 Volta
🇵🇸 Wadi Gaza
🇨🇳 Yangtze
🇨🇳 Yellow
🇷🇺 Yenisey
🇺🇸 Yukon
🇿🇲 Zambezi