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Largest River Basins by Area on a Map

Can you name the largest river basins in the world with the help of a map?
Source, primary rivers only
Thanks to ChineseChen for helping me make this quiz
Quiz by Ethaboo444
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Last updated: January 8, 2021
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First submittedJanuary 8, 2021
Times taken3,663
Average score70.0%
Rating4.71
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Area (km²)
River Basin
6,145,186
Amazon River
3,730,881
Congo River
3,254,853
Nile River
3,202,185
Mississippi-Missouri River
2,982,493
Ob River
Area (km²)
River Basin
2,582,704
Paraná River
2,554,388
Yenisei River
2,306,743
Lena River
2,261,741
Niger River
1,929,955
Amur River
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35 Comments
QuizBandit
+4
Level 50
Jan 8, 2021
Nominated. Great quiz!
QuizBoy786
+1
Level 54
Feb 16, 2021
Nice Quiz!
einstein100102
+1
Level 54
Feb 23, 2021
nice quiz!
Shadywyvern
+11
Level 80
Apr 8, 2021
Great quiz! Physical geography does not get enough love on this site...
Confabulously
+1
Level 78
Apr 8, 2021
Oh, my feature finally went through, yay!! I hope this inspires more people to get into physical geography.
Damangio
+1
Level 64
Apr 8, 2021
The map depicts the entire Rio de la Plata basin, not just the Paraná part.
MG17
+1
Level 43
May 29, 2021
Ethaboo, regarding Brasileirão Picks, just for I take not, you was just advising me about the date, or are you going to pick also?
Ethaboo444
+1
Level 59
May 29, 2021
Wait, i didn't pick? Oops
MG17
+1
Level 43
May 30, 2021
Sorry, but now you need to wait for the next rounds, if you want to pick them. As the last match of this round is occurring, I’m preparing the next blog, with Rounds 2-7.
MG17
+1
Level 43
May 30, 2021
Sorry also for comment just know...
Quizmaster
+4
Level ∞
Oct 31, 2021
Interesting! Would it be possible to expand into a top 20?
Ethaboo444
+1
Level 59
Nov 1, 2021
I think I will try :). I'll see if I have time today, I need to fix some things here anyways.
Ethaboo444
+1
Level 59
Jan 10, 2022
still working on it lol. havent had much time. possibly might come out soon tho, although I have no real way of telling lol
Ethaboo444
+1
Level 59
Feb 1, 2022
still working on it... lol
Ethaboo444
+1
Level 59
Feb 21, 2022
im... still... WORKING ON IT

pls help i cant stop procrastinating lol

QuizzerBros
+1
Level 68
Feb 4, 2022
Yes, top 20 would be great! Then QM might feature it. Nominated in case he doesn't.
Ethaboo444
+1
Level 59
Feb 4, 2022
thanks ig lol, im still working on it lol, everyone be patient. (pls)
scambigol
+1
Level 78
Apr 28, 2022
agreed, great quiz but I think top 20 would be better! and maybe also top 5 by continent... and perhaps with rivers shown on the map if that's doable... etc etc ;)
Ethaboo444
+1
Level 59
Apr 28, 2022
ill try not to procrastinate this time ok :)
Ethaboo444
+1
Level 59
Aug 29, 2022
I procrastinated
RealBillGates
+2
Level 77
Sep 4, 2022
Bro do you just want me to do it
Ethaboo444
+1
Level 59
Sep 4, 2022
no thank you
Damangio
+1
Level 64
Feb 9, 2023
I was about to request the same thing.
Ethaboo444
+1
Level 59
Feb 12, 2023
i have the file somewhere id just need to find it again

if i dont procrastinate it should hopefully be done by next week, but i doubt thats gonna happen

QuizzerBros
+1
Level 68
Apr 3, 2023
It didn't happen...

lemme guess: you procrastinated?

Ethaboo444
+1
Level 59
Apr 3, 2023
I started, but then I forgot to finish it
Wistful
+2
Level 72
Feb 15, 2024
It's been another year, any progress?
XYU
+1
Level 62
Nov 6, 2021
Amazed that the Parana basin is so big - looks about the same size as the Amazon's.
XYU
+1
Level 62
Nov 6, 2021
Ah but that doesn't match the figures in your table - maybe your boundary line is in the wrong place? Not that it's a problem for the quiz.
MG17
+2
Level 43
Nov 6, 2021
Actually, this Paraná Basin is the Río de La Plata Basin, the unite Paraná Basin, and Uruguay Basin. Although both names can be acceptable type-ins, this should be corrected.
georgekotz
+1
Level 78
Jun 19, 2022
Nice quiz, seeing the basins visualized like that was definitely interesting. Minor observation: Lake Baikal's outflow is the Angara, which flows into the Yenisey, so the area that drains into Lake Baikal (basins of Selenge, Barguzin etc.) should be included for Yenisey.
Ethaboo444
+1
Level 59
Jun 20, 2022
I'm aware of this, but the quiz needs to be updated as the borders of the basins aren't incredibly accurate, and I took on this project close to when I started making eggs, so it wasn't destined to look very nice :)
Quizzleyy
+1
Level 69
Dec 26, 2023
Very nice quiz, nominated! Hope it gets featured eventually, maybe if you add the next few basins and show the rivers in the map as well?
Fianchetto
+1
Level 76
Mar 18, 2024
Dude if you just expand to top 20 QM will probably feature it
ooftownroad
+1
Level 62
Apr 23, 2024
Still working on it :(
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