#river  a large natural stream of water (larger than a creek); "the river was navigable for 50 miles"
  supertype:  stream__watercourse  a natural body of running water flowing on or under the earth
  instance:  Jordan_River  River_Acheron  River_Adige  River_Aire  Amazon_River  Amur_River  Apalachicola_River  River_Arno  Bighorn_River  Brahmaputra_River  Brazos_River  Canadian_River  Cimarron_River  River_Cocytus  Danube_River  Darling_River  Ebro_River  Elbe_River  Euphrates_River  Ganges_River  Gila_River  Huang_He  Indus_River  Irtish_River  Isere_River  Kanawha_River  Kura_River  Lena_River  River_Lethe  Limpopo  Little_Bighorn_River  Little_Missouri_River  Loire_River  Madeira_River  Mekong_River  Meuse_River  Milk_River  Neckar_River  Neosho_River  Niagara_River  Nile_River  Niobrara_River  Ob_River  Oder_River  Orinoco_River  Osage_River  Ouachita_River  Parana_River  Pecos_River  Pee_Dee_River  Platte_River  Po_River  Potomac_River  Purus_River  Red_River  Republican_River  Rhone_River  Rio_Grande  Sabine_River  Saint_Francis_River  Saint_Johns_River  Saint_Lawrence_River  Salmon_River  Saone_River  Seine_River  Snake_River  South_Platte_River  River_Styx  Suriname_River  Susquehanna_River  Tagus_River  Tennessee_River  Thames_River  Tiber  Tigris_River  Tocantins_River  Tombigbee_River  River_Tyne  Vistula_River  Volga_River  Volkhov_River  Wabash_River  White_River  Willamette_River  Wisconsin_River  Yalu  Chang_Jiang  Yazoo_River  Yellowstone_River  Yenisei_River  Yukon_River  Zambezi_River  Zhu_Jiangi
  part:  estuary  rapid  waterfall
  part of:  water_system
  subtype:  Aare_River__Aare__Aar  a river in north central Switzerland that runs northeast into the Rhine
  subtype:  Alabama_River__Alabama  a river in Alabama that flows southwestward to become a tributary of the Mobile River
  subtype:  Allegheny_River__Allegheny  a river that rises in Pennsylvania and flows north into New York and then back south through Pennsylvania again to join the Monongahela River at Pittsburgh which is the beginning of the Ohio River
  subtype:  Araguaia_River__Araguaia__Araguaya__Araguaya_River  a river in central Brazil that flows generally northward (with many falls) to join the Tocantins River
  subtype:  Aras__Araxes  a river that rises in northeastern Turkey (near the source of the Euphrates) and flows generally eastward through Armenia to the Caspian Sea; ancient name was Araxes
  subtype:  Arauca  a river that rises in northern Colombia and flows generally eastward to the Orinoco in central Venezuela
  subtype:  Arkansas_River__Arkansas  a river that rises in the Rocky Mountains in Colorado and flows southeast through Kansas and Oklahoma and through Arkansas to become a tributary of the Mississippi River
  subtype:  Upper_Avon__Avon  a river in central England that flows through Stratford-on-Avon and empties into the Severn
  subtype:  Avon.river__avon  a river in southwestern England rising in Gloucestershire and flowing through Bristol to empty into the estuary of the Severn
  subtype:  Cape_Fear_River  a river in North Carolina that flows southeast to the Atlantic Ocean at Cape Fear
  subtype:  Chao_Phraya  a river in Thailand formed by the confluence of the Nan and Ping Rivers; flows southward past Bangkok and empties into the Gulf of Thailand
  subtype:  Charles_River__Charles  a river in eastern Massachusetts that empties into Boston Harbor and that separates Cambridge from Boston
  subtype:  Chattahoochee_River__Chattahoochee  a river rising in northern Georgia and flowing southwest and south to join the Flint River at the Florida border where they form the Apalachicola River
  subtype:  Colorado_River__Colorado  a river in southwestern United States; rises in the Rocky Mountains of northern Colorado and flows southwest through Utah into Arizona (where it flows through the Grand Canyon) and then southward forming the border between California and Arizona and finally into Mexico where it empties into the Gulf of California; an important source of water in the southwestern United States
  subtype:  Colorado_River.Texas__coloradoriver__Colorado  a river in Texas; flows southeast into the Gulf of Mexico
  subtype:  Columbia_River__Columbia  a North American river; rises in southwestern Canada and flows southward across Washington to form the border between Washington and Oregon before emptying into the Pacific; known for its salmon runs in the spring
  subtype:  Congo_River__Congo  a major African river (one of the world's longest); flows through Congo into the South Atlantic
  subtype:  Connecticut_River__Connecticut  a river in the northeastern United States; flows south from northern New Hampshire along the border between New Hampshire and Vermont and through Massachusetts and Connecticut where it empties into Long Island Sound
  subtype:  Cumberland_River__Cumberland  a river that rises in southeastern Kentucky and flows westward through northern Tennessee to become a tributary of the Ohio River in southwestern Kentucky
  subtype:  Delaware_River__Delaware  a river that rises in the Catskills in southeastern New York and flows southward along the border of Pennsylvania with New York and New Jersey to northern Delaware where it empties into Delaware Bay
  subtype:  Dnieper_River__Dnieper  a river that rises in Russia near Smolensk and flowing south through Belarus and Ukraine to empty into the Black Sea
  subtype:  Don_River__Don  a European river in southwestern Russia; flows into the Sea of Azov
  subtype:  Elizabeth_River  a short river in southeastern Virginia flowing between Norfolk and Portsmouth into Hampton Roads
  subtype:  Flint_River__Flint  a river in western Georgia that flows generally south to join the Chattahoochee River at the Florida border where they form the Apalachicola River
  subtype:  Gan_Jiang__Kan_River  a river in southeastern China that flows generally north into the Chang Jiang north of Nanchang
  subtype:  Garonne_River__Garonne  a river that rises in the Pyrenees and flows northwest to the Bay of Biscay
  subtype:  Green_River__Green  a river that rises in western Wyoming and flows southward through Utah to become a tributary of the Colorado River
  subtype:  Housatonic_River__Housatonic  a river that rises in western Massachusetts and flows south through Connecticut to empty into Long Island Sound
  subtype:  Hudson_River__Hudson  a New York river; flows southward into New York Bay; explored by Henry Hudson early in the 17th century
  subtype:  Illinois_River  a river in Illinois that flows southwest to the Mississippi River
  subtype:  Irrawaddy_River__Irrawaddy  the main river of Myanmar rising in the north and flowing south through the length of Burma to empty into the Andaman Sea
  subtype:  James_River__James  a river that rises in North Dakota and flows southward across South Dakota to the Missouri
  subtype:  James__James_River  a river in Virginia that flows east into Chesapeake Bay at Hampton Roads
  subtype:  Kansas_River__Kansas__Kaw_River  a river in northeastern Kansas; flows eastward to become a tributary of the Missouri River
  subtype:  Kasai_River__Kasai__River_Kasai  a river of southwestern Africa that rises in central Angola and flows east and then north (forming part of the border between Angola and Congo) and continuing northwest through Congo to empty into the Congo River on the border between Congo and Republic of the Congo
  subtype:  Klamath_River__Klamath  a river flowing southwest from Oregon through northern California to the Pacific Ocean
  subtype:  Mackenzie_River__Mackenzie  a Canadian river; flows into the Beaufort Sea
  subtype:  Merrimack_River__Merrimack  a river that rises in south central New Hampshire and flows through Concord and Manchester into Massachusetts and empties into the Atlantic Ocean
  subtype:  Mississippi_River__Mississippi  a major North American river and the chief river of the United States; rises in northern Minnesota and flows southward into the Gulf of Mexico
  subtype:  Missouri_River__Missouri  the longest river in the United States; arises in Montana and flows southeastward to become a tributary of the Mississippi at Saint Louis
  subtype:  Mobile_River__Mobile  a river in southwestern Alabama; flows into Mobile Bay
  subtype:  Monongahela_River__Monongahela  a river that rises in northern West Virginia and flows north into Pennsylvania where it joins the Allegheny River at Pittsburgh to form the Ohio River
  subtype:  Murray_River__Murray  an Australian river; flows into the Indian Ocean
  subtype:  Namoi_River__Namoi  a river in southeastern Australia that flows generally northwest to join the Darling River
  subtype:  Nan_River__Nan  a river of western Thailand flowing southward to join the Ping River to form the Chao Phraya
  subtype:  Neva_River__Neva  a river in northwestern Russia flowing generally west into the Gulf of Finland
  subtype:  Niger_River__Niger  an African river; flows into the South Atlantic
  subtype:  North_Platte_River__North_Platte  a river that rises in northern Colorado and flows northward into Wyoming and then eastward and southeastward through Nebraska where it joins the South Platte to form the Platte River
  subtype:  Ohio_River__Ohio  a river that is formed in western Pennsylvania and flows westward to become a tributary of the Mississippi River
  subtype:  Orange_River__Orange  a river in South Africa that flows generally westward to the Atlantic Ocean
  subtype:  Parnaiba__Parnahiba  a river in northeastern Brazil that flows generally northward to the Atlantic Ocean
  subtype:  Penobscot_River__Penobscot  a river in central Maine flowing into Penobscot Bay
  subtype:  Ping_River__Ping  a river in western Thailand; a major tributary of the Chao Phraya
  subtype:  Rhine_River__Rhine__Rhein  a major European river carrying more traffic than any other river in the world; flows into the North Sea
  subtype:  Ruhr_River__Ruhr  a tributary of the Rhine
  subtype:  Saale_River__Saale  a river that rises in central Germany and flows north to join the Elbe River
  subtype:  Sacramento_River  a river in northern California rising near Mount Shasta and flowing south to the San Francisco Bay
  subtype:  Sambre_River__Sambre  a river in western Europe that rises in northern France and flows generally east into Belgium where it joins the Neuse at Namur
  subtype:  Savannah_River__Savannah  a river in South Carolina that flows southeast to the Atlantic
  subtype:  Scheldt_River__Scheldt__scheldt  a river that rises in France and flows northeast across Belgium and empties into the North Sea
  subtype:  River_Severn__Severn__Severn_River  a river in England and Wales flowing into the Bristol Channel; the longest river in Great Britain
  subtype:  Severn__Severm_River  a river in Ontario that flows northeast into Hudson Bay
  subtype:  Seyhan_River__Seyhan  a Turkish river flowing south southwest into the Mediterranean
  subtype:  Shari_River__Shari__Chari__Chari_River  an African river that flows northwest into Lake Chad

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