GeotchaA geography quiz on a real globe

20 longest rivers in Heilongjiang

20 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. 1Amur2,824 km
  2. 2Argun1,620 km
  3. 3Songhua1,434 km
  4. 4Nen1,370 km
  5. 5Ussuri897 km
  6. 6Mudan700 km
  7. 7Chuo'er He610 km
  8. 8Naoli596 km
  9. 9Taoer595 km
  10. 10Holin Gol590 km
  11. 11Muling577 km
  12. 12Hulan532 km
  13. 13Tangwang He492 km
  14. 14Lalin He448 km
  15. 15Gan (Inner Mongolia)446 km
  16. 16Huma435 km
  17. 17Mayi341 km
  18. 18Ashi257 km
  19. 19Razdolnaya245 km
  20. 20Sungacha210 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.

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