GeotchaA geography quiz on a real globe

25 longest rivers in Montana

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. 1Missouri3,726 km
  2. 2Milk River1,173 km
  3. 3Yellowstone1,114 km
  4. 4Little Missouri River901 km
  5. 5Kootenay780 km
  6. 6Bighorn742 km
  7. 7Powder River604 km
  8. 8Musselshell570 km
  9. 9Clark Fork499 km
  10. 10Tongue River426 km
  11. 11Frenchman341 km
  12. 12Big Muddy Creek307 km
  13. 13Madison295 km
  14. 14Poplar (Montana–Saskatchewan)269 km
  15. 15Flathead254 km
  16. 16Big Hole River246 km
  17. 17North Fork Flathead River246 km
  18. 18St. Mary235 km
  19. 19Saint Joe225 km
  20. 20Little Bighorn River222 km
  21. 21Belly220 km
  22. 22Clarks Fork Yellowstone220 km
  23. 23Judith220 km
  24. 24Rosebud Creek220 km
  25. 25Pend Oreille209 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 Montana, 25 rivers: each one marked on the globe

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