GeotchaA geography quiz on a real globe

25 longest rivers of the Yukon 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. 1Yukon3,190 km
  2. 2Tanana940 km
  3. 3Porcupine916 km
  4. 4Innoko805 km
  5. 5Koyukuk805 km
  6. 6Stewart686 km
  7. 7Teslin632 km
  8. 8Iditarod523 km
  9. 9Nowitna402 km
  10. 10Kanuti366 km
  11. 11Hess325 km
  12. 12Sheenjek320 km
  13. 13Beaver Creek290 km
  14. 14Donjek287 km
  15. 15Ross280 km
  16. 16Tolovana277 km
  17. 17Kateel270 km
  18. 18Sulatna270 km
  19. 19Atchuelinguk265 km
  20. 20White River (Yukon)265 km
  21. 21South Fork Koyukuk River263 km
  22. 22Delta256 km
  23. 23Draanjik250 km
  24. 24Salcha250 km
  25. 25Miner (Yukon)243 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 Yukon basin: the Yukon 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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