GeotchaA geography quiz on a real globe

50 longest rivers flowing into the Indian Ocean

50 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. 1Indus3,180 km
2. 2Salween2,815 km
3. 3Zambezi2,574 km
4. 4Murray2,530 km
5. 5Ganges2,525 km
6. 6Irrawaddy2,170 km
7. 7Limpopo1,750 km
8. 8Jubba1,658 km
9. 9Godavari1,465 km
10. 10Krishna1,400 km
11. 11Narmada1,315 km
12. 12Gascoyne978 km
13. 13Mahanadi860 km
14. 14Ashburton825 km
15. 15Ruvuma800 km
16. 16Tana800 km
17. 17Brahmani799 km
18. 18Murchison780 km
19. 19Kaveri765 km
20. 20Fortescue760 km
21. 21Tapti720 km
22. 22Great Fish River644 km
23. 23Betsiboka600 km
24. 24Rokan600 km
25. 25Rufiji600 km
26. 26Penna597 km
27. 27Mangoky564 km
28. 28Sittaung560 km
29. 29Mahi550 km
30. 30Wami545 km
31. 31Messalo530 km
32. 32Tugela520 km
33. 33Barka500 km
34. 34Zohreh490 km
35. 35Komati480 km
36. 36Subarnarekha470 km
37. 37Kaladan450 km
38. 38Dasht430 km
39. 39Pangani420 km
40. 40Gourits416 km
41. 41Kampar414 km
42. 42Onilahy400 km
43. 43Pungwe400 km
44. 44Save400 km
45. 45Yule396 km
46. 46Athi-Galana-Sabaki390 km
47. 47Sabarmati371 km
48. 48Manambolo370 km
49. 49Swan River360 km
50. 50Snowy352 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. Flowing into the Indian Ocean: the rivers whose mouth Wikidata records as the Indian Ocean 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) (P403); their tributaries are left out.

On the map

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