GeotchaA geography quiz on a real globe

25 longest rivers of the Congo basin

25 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. 1Congo4,700 km
  2. 2Kasai2,272 km
  3. 3Kwango1,770 km
  4. 4Tshuapa1,300 km
  5. 5Lomami1,280 km
  6. 6Uele1,210 km
  7. 7Sankuru1,200 km
  8. 8Ubangi1,060 km
  9. 9Kwilu965 km
  10. 10Kotto882 km
  11. 11Chicapa870 km
  12. 12Mbomou800 km
  13. 13Sangha785 km
  14. 14Luapula560 km
  15. 15Inkisi555 km
  16. 16Kadeï554 km
  17. 17Ouaka550 km
  18. 18Dja523 km
  19. 19Lobaye520 km
  20. 20Alima500 km
  21. 21Lufira500 km
  22. 22Chambeshi480 km
  23. 23Malagarasi475 km
  24. 24Lwembe470 km
  25. 25Chinko420 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. Rivers in Antarctica are left out unless the quiz includes Antarctica. The Congo basin: the Congo and every river here that flows into it, directly or through other rivers and lakes, following where Wikidata says each river flows (P403) downstream.

On the map

Map of 25 longest rivers of the Congo basin, 25 rivers: each one marked on the globe

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