GeotchaA geography quiz on a real globe

25 longest rivers of the Hudson Bay 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. 1Churchill1,609 km
2. 2North Saskatchewan River1,380 km
3. 3Assiniboine1,275 km
4. 4Souris1,240 km
5. 5South Saskatchewan River1,004 km
6. 6Sheyenne951 km
7. 7Severn (Hudson Bay)935 km
8. 8La Grande893 km
9. 9Red River of the North890 km
10. 10Albany832 km
11. 11Red Deer River801 km
12. 12Battle800 km
13. 13Rivière Rupert763 km
14. 14Rivière Eastmain756 km
15. 15Attawapiskat748 km
16. 16Qu'Appelle743 km
17. 17Great Whale River726 km
18. 18Beaver River689 km
19. 19Thlewiaza683 km
20. 20Nelson644 km
21. 21Carrot634 km
22. 22Winisk600 km
23. 23Bow River587 km
24. 24Ekwan585 km
25. 25Kapiskau555 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 Hudson Bay basin: every river here whose waters reach Hudson Bay or a sea, gulf or bay inside it, as the IHO's sea areas nest (the North Sea lies in the Atlantic, the Adriatic in the Mediterranean), directly or through other rivers and lakes, following where Wikidata says each river flows (P403) downstream. Rivers of inland basins (the Caspian Sea, Lake Balkhash) reach no ocean.

On the map

More in Hudson Bay

• 25 largest islands in Hudson Bay
• 25 longest rivers flowing into Hudson Bay

Similar quizzes

• 25 longest rivers flowing into the Atlantic
• 50 longest rivers flowing into the Atlantic
• 50 longest rivers of the Atlantic basin
• 25 longest rivers flowing into the Pacific
• 50 longest rivers flowing into the Pacific
• 50 longest rivers of the Pacific basin
• 25 longest rivers flowing into the Arctic Ocean
• 50 longest rivers flowing into the Arctic Ocean
• 50 longest rivers of the Arctic Ocean basin
• 25 longest rivers flowing into the Indian Ocean
• Longest river systems