GeotchaA geography quiz on a real globe

25 longest rivers of the St. Lawrence 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. 1Ottawa1,271 km
  2. 2St. Lawrence1,197 km
  3. 3Saint-Maurice river563 km
  4. 4Rivière Péribonka547 km
  5. 5Rivière aux Outardes450 km
  6. 6Rivière Betsiamites444 km
  7. 7Grand River420 km
  8. 8Rivière Moisie410 km
  9. 9Spanish370 km
  10. 10Gatineau343 km
  11. 11St. Joseph338 km
  12. 12Rivière du Lièvre330 km
  13. 13Mississagi322 km
  14. 14Rivière Mistassibi317 km
  15. 15Rivière Mistassini314 km
  16. 16Manistee310 km
  17. 17Saint Louis309 km
  18. 18Grand River (Ontario)305 km
  19. 19Magpie290 km
  20. 20Rivière Sainte-Marguerite280 km
  21. 21Rivière Toulnustouc273 km
  22. 22Thames (Ontario)273 km
  23. 23Wanapitei265 km
  24. 24Rivière Rouge260 km
  25. 25Genesee253 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 St. Lawrence basin: the St. Lawrence 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 St. Lawrence basin, 25 rivers: each one marked on the globe

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