GeotchaA geography quiz on a real globe

25 longest rivers of the East Siberian Sea 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. 1Kolyma2,129 km
2. 2Indigirka1,726 km
3. 3Alazeya1,590 km
4. 4Omolon1,114 km
5. 5Selennyakh796 km
6. 6Rossokha790 km
7. 7Bolshaya Chukochya758 km
8. 8Byoryolyokh754 km
9. 9Maly Anyuy738 km
10. 10Bolshoy Anyuy654 km
11. 11Uyandina586 km
12. 12Sededema567 km
13. 13Allaikha563 km
14. 14Badyarikha545 km
15. 15Ozhogina523 km
16. 16Beryozovka517 km
17. 17Korkodon476 km
18. 18Khatyngnakh444 km
19. 19Yasachnaya441 km
20. 20Buyunda434 km
21. 21Bulun428 km
22. 22Kyllakh423 km
23. 23Palyavaam416 km
24. 24Oloy414 km
25. 25Omulyovka410 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 East Siberian Sea basin: every river here whose waters reach the East Siberian Sea 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 East Siberian Sea

• 12 largest islands in the East Siberian Sea
• 12 longest rivers flowing into the East Siberian Sea

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