GeotchaA geography quiz on a real globe

25 longest rivers in Irkutsk

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. 1Lena4,294 km
  2. 2Nizhnyaya Tunguska2,989 km
  3. 3Podkamennaya Tunguska1,865 km
  4. 4Vitim1,837 km
  5. 5Angara1,779 km
  6. 6Uda1,203 km
  7. 7Chara851 km
  8. 8Biryusa830 km
  9. 9Chona802 km
  10. 10Nepa683 km
  11. 11Kirenga669 km
  12. 12Oka (Angara)630 km
  13. 13Ilim589 km
  14. 14Bol'shoy Patom570 km
  15. 15Chuya (Lena)512 km
  16. 16Irkut488 km
  17. 17Tetere486 km
  18. 18Iya484 km
  19. 19Kova452 km
  20. 20Kuta408 km
  21. 21Yeyka400 km
  22. 22Kazyr388 km
  23. 23Bol'shaya Yerëma383 km
  24. 24Poyma382 km
  25. 25Vakunayka362 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. An item counts for every first-level unit (state, province, county) it touches: a lake or island by its outline, a river by its course, within about 1.5 km; a summit, a cape or anything without a shape by its point.

On the map

Map of 25 longest rivers in Irkutsk, 25 rivers: each one marked on the globe

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