GeotchaA geography quiz on a real globe

20 longest rivers in southern Brazil

20 rivers, each one drawn on a satellite globe. Name it when it lights up, find it when you are given its name, or type every one you can remember in Name all.

Free to play, with no account needed. What you miss comes back for review until it sticks.

The rivers

  1. 1Paraná4,880 km
  2. 2Uruguay1,790 km
  3. 3Iguazu1,320 km
  4. 4Paranapanema929 km
  5. 5Río Negro (Uruguay)916 km
  6. 6Jacuí800 km
  7. 7Ivaí685 km
  8. 8Canoas570 km
  9. 9Tibagi550 km
  10. 10Pelotas450 km
  11. 11Negro (Paraná)400 km
  12. 12Río Cuareim351 km
  13. 13Vacacaí330 km
  14. 14Ibicuí290 km
  15. 15Caí285 km
  16. 16Jaguarão270 km
  17. 17Ibirapuitã250 km
  18. 18Pardo250 km
  19. 19Chapecó248 km
  20. 20Irani236 km

Length in km as Wikidata records it (P2043, the best-ranked figure). Each named river counts on its own: the river that carries the name, from its source to its mouth. Headstreams and tributaries with names of their own are rivers of their own, so the Missouri and the Mississippi are two rivers here, as are the Irtysh and the Ob (the Longest River Systems set measures such chains as one system, from the most distant source). A named section of a river is that river: the Solimões, as the Amazon’s upper course is called in Brazil, is the Amazon. Where the recorded length runs from a differently named headwater (the Congo’s from the Lualaba’s source), the course is drawn on up that headwater. Rivers under 200 km are in only when they are well known (30 or more Wikipedia editions), and a river whose mapped course covers under half its recorded length is left out. Southern Brazil: Paraná, Santa Catarina and Rio Grande do Sul. Places are by geography: what lies in a dependency counts for its own region (Puerto Rico’s islands are the Caribbean’s, Réunion’s Africa’s), and Hawaii is in Polynesia.

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