GeotchaA geography quiz on a real globe

25 longest rivers of the Nelson 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. 1North Saskatchewan River1,380 km
  2. 2Assiniboine1,275 km
  3. 3Souris1,240 km
  4. 4South Saskatchewan River1,004 km
  5. 5Sheyenne951 km
  6. 6Red River of the North890 km
  7. 7Red Deer River801 km
  8. 8Battle800 km
  9. 9Qu'Appelle743 km
  10. 10Nelson644 km
  11. 11Carrot634 km
  12. 12Bow River587 km
  13. 13Saskatchewan547 km
  14. 14Berens530 km
  15. 15Grass River515 km
  16. 16Pembina (Manitoba – North Dakota)513 km
  17. 17Oldman445 km
  18. 18Vermilion (Alberta)435 km
  19. 19Red Deer River (Manitoba)390 km
  20. 20Swan River (Manitoba–Saskatchewan)390 km
  21. 21Wild Rice390 km
  22. 22Pipestone Creek360 km
  23. 23Moose Jaw River340 km
  24. 24Rosebud327 km
  25. 25Poplar325 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 Nelson basin: the Nelson 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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