GeotchaA geography quiz on a real globe

19 longest rivers of the Niger basin

19 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. 1Niger4,180 km
  2. 2Benue1,370 km
  3. 3Sokoto600 km
  4. 4Gongola531 km
  5. 5Bani430 km
  6. 6Mékrou410 km
  7. 7Sankarani400 km
  8. 8Bagoé350 km
  9. 9Dallol Bosso350 km
  10. 10Sirba350 km
  11. 11Alibori338 km
  12. 12Milo330 km
  13. 13Katsina Ala320 km
  14. 14Goroubi300 km
  15. 15Donga282 km
  16. 16Tinkisso268 km
  17. 17Sota250 km
  18. 18Mayo Kébi238 km
  19. 19Dargol212 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 Niger basin: the Niger and every river here that flows into it, directly or through other rivers and lakes, following where Wikidata says each river flows (P403) downstream.

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