GeotchaA geography quiz on a real globe

20 longest rivers of the Khatanga basin

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. 1Kotuy1,409 km
  2. 2Moyero825 km
  3. 3Maymecha650 km
  4. 4Kheta604 km
  5. 5Popigay532 km
  6. 6Kotuykan447 km
  7. 7Novaya411 km
  8. 8Fomich393 km
  9. 9Boganida366 km
  10. 10Changada320 km
  11. 11Tukalan270 km
  12. 12Eriyechka262 km
  13. 13Ambardakh235 km
  14. 14Dzhogdzho230 km
  15. 15Khatanga227 km
  16. 16Kotuykan (Krasnoyarsk Krai)224 km
  17. 17Nalim-Rassokha221 km
  18. 18Bol'shaya Romanikha218 km
  19. 19Il'ya216 km
  20. 20Aganyli202 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 Khatanga basin: the Khatanga 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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