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Countries with Highest Inland Surface Water Percentage

Which countries have the greatest percentage of inland surface water?
Inland surface water is the total area of a country's lakes, rivers, reservoirs and lagoons, and excludes territorial waters
For countries with greatest total water area, try Countries by Inland Surface Water by hwes
Source: Wikipedia
Quiz by TenThousand
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Last updated: October 16, 2018
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First submittedNovember 3, 2014
Times taken1,337
Average score35.0%
Rating4.25
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%
country
98.47
Marshall Islands
27.88
Bahamas
22.16
Guinea-Bissau
20.60
Malawi
18.41
Netherlands
18.23
Uganda
14.12
Eritrea
13.51
Liberia
12.90
Philippines
11.47
Gambia
%
country
10.34
Taiwan
10.15
Finland
9.60
Bangladesh
9.55
India
8.93
Canada
8.87
Sweden
8.80
Colombia
8.67
Brunei
8.43
Guyana
7.96
Nicaragua
+1
Level 76
Nov 3, 2014
Nice quiz! I think you should specify that this also includes lagoons etc. because they don't belong to any of the three categories mentioned.
+1
Level 76
Nov 4, 2014
Agreed - the intro has been updated.
+1
Level 82
Nov 29, 2014
Why does the Marshall Islands make it (with 98%, which means they must be counting the ocean between the islands), and yet countries like Micronesia, the Solomon Islands, and Cape Verde do not. They would have to be using an inconsistent means of measuring. Aside from a few like Canada, Nicaragua, The Gambia and Malawi which can be surmised through some logical deduction, the rest of this is almost an impossible crap shoot.
+3
Level 76
Nov 29, 2014
The latter three are mainly islands, whereas the Marshall Islands are mainly enclosed atolls.
+2
Level 75
Nov 19, 2021
Just took a quick look and didn't see any enclosed atolls. In other words, every atoll I saw had at least some non-reef access to the sea. That said, even a submerged reef presumably would rule a lagoon out, wouldn't it? Of course, if I missed just one atoll, and if the entire lagoon would then be counted as inland water, that might skew the numbers hugely. My guess, though, is that this is just a difference in definition between jurisdictions. That, by the way, must be the case for Guinea-Bissau, Eritrea, and Liberia as well.
+2
Level 77
Dec 2, 2015
I find it interesting. And as a Finn guessing Finland and Sweden was easy. The rest - not so much.
+1
Level 42
Jan 5, 2019
same here - Swedish :)

Hard, but fun

+1
Level 57
Jun 22, 2017
Before the independence of South Sudan, the combined inland surface water of Sudan was about 130 000 sq kilometers, and the percentage of inland water of the total area was 5.18%. Due to the war, figures are not available of the two countries now. If we just knew their figures, at least another of them would be ranked high on this quiz.
+2
Level 71
Jan 5, 2019
Well I bombed out on this quiz ...... feeling quite smug after the quiz about inland waters It hit the fan this time:
+1
Level 75
Dec 11, 2020
Very interesting quiz - a real mix of continents and country-types. I wonder if Senegal would make it if Gambia hadn't stolen its river...
+1
Level 71
Sep 15, 2023
Got 16/20 but missed Sweden and Finland (and the Philippines and Eritrea).