Lake water quality trophic state (%) by country

Countries reporting
132
Highest
25.9%
Somalia
Lowest
0.0%
Libya
Median
0.6%
Years covered
5
2017–2021
Data points
850

What the numbers show

Lake water quality trophic state (%) is currently reported for 132 countries. The highest value is 25.9% in Somalia; the lowest is 0.0% in Libya.

The median across all reporting countries is 0.6%, and the mean is 1.7%.

Lake water quality trophic state: full country ranking

#Country LatestYear 10-year changeTrend
1 Somalia 25.9% 2021 β€” rising
2 Angola 13.4% 2021 β€” rising
3 Congo 12.4% 2021 β€” flat
4 Botswana 9.6% 2021 β€” falling
5 Guinea 9.1% 2021 β€” rising
6 Togo 7.8% 2021 β€” volatile
7 South Sudan 7.1% 2021 β€” rising
8 Kyrgyzstan 7.0% 2021 β€” falling
9 Chile 6.0% 2021 β€” falling
10 Peru 5.8% 2021 β€” flat
11 Mozambique 4.8% 2021 β€” rising
12 Canada 4.3% 2021 β€” falling
13 United Kingdom of Great Britain and Northern Ireland 4.0% 2021 β€” falling
14 Panama 4.0% 2021 β€” rising
15 Venezuela (Bolivarian Republic of) 3.9% 2021 β€” flat
16 Democratic Republic of the Congo 3.5% 2021 β€” falling
17 Honduras 3.2% 2021 β€” falling
18 Papua New Guinea 3.0% 2021 β€” rising
18 Melanesia 3.0% 2021 β€” rising
20 Rwanda 2.8% 2021 β€” falling
21 Mongolia 2.8% 2021 β€” falling
22 Gabon 2.7% 2021 β€” falling
23 Norway 2.7% 2021 β€” volatile
24 Ireland 2.6% 2021 β€” volatile
25 Bolivia (Plurinational State of) 2.5% 2021 β€” falling
26 Iceland 2.4% 2021 β€” volatile
27 China 2.3% 2021 β€” falling
28 El Salvador 2.2% 2021 β€” volatile
29 Sweden 2.1% 2021 β€” falling
30 Burkina Faso 2.1% 2021 β€” rising
31 Russian Federation 2.1% 2021 β€” falling
32 CΓ΄te d'Ivoire 2.0% 2021 β€” rising
33 Indonesia 1.8% 2021 β€” volatile
34 Ecuador 1.8% 2021 β€” falling
35 New Zealand 1.8% 2021 β€” falling
36 India 1.7% 2021 β€” rising
37 Cuba 1.7% 2021 β€” falling
38 Viet Nam 1.7% 2021 β€” falling
39 Malawi 1.6% 2021 β€” rising
40 Colombia 1.6% 2021 β€” falling
41 TΓΌrkiye 1.5% 2021 β€” volatile
42 Nigeria 1.5% 2021 β€” rising
43 Cameroon 1.5% 2021 β€” rising
44 Argentina 1.5% 2021 β€” falling
45 Tajikistan 1.4% 2021 β€” falling
46 Mali 1.4% 2021 β€” falling
47 United Republic of Tanzania 1.3% 2021 β€” rising
48 Benin 1.3% 2021 β€” volatile
49 Sri Lanka 1.3% 2021 β€” rising
50 Brazil 1.3% 2021 β€” rising
51 Madagascar 1.2% 2021 β€” falling
52 Sudan 1.1% 2021 β€” rising
53 Zimbabwe 1.1% 2021 β€” falling
54 Finland 1.1% 2021 β€” falling
55 Nicaragua 1.1% 2021 β€” falling
56 Egypt 1.0% 2021 β€” falling
57 Czechia 1.0% 2021 β€” falling
58 Mexico 1.0% 2021 β€” rising
59 Ethiopia 0.9% 2021 β€” rising
60 Guatemala 0.8% 2021 β€” rising
61 Japan 0.8% 2021 β€” volatile
62 Australia and New Zealand 0.8% 2021 β€” falling
63 Australia 0.7% 2021 β€” falling
64 Morocco 0.7% 2021 β€” rising
65 Kenya 0.7% 2021 β€” rising
66 Costa Rica 0.6% 2021 β€” rising
67 Myanmar 0.6% 2021 β€” volatile
68 Belize 0.6% 2021 β€” rising
69 Lithuania 0.5% 2021 β€” volatile
70 Zambia 0.4% 2021 β€” flat
71 Sierra Leone 0.4% 2021 β€” volatile
72 Thailand 0.4% 2021 β€” falling
73 Paraguay 0.4% 2021 β€” rising
74 Bangladesh 0.4% 2021 β€” falling
75 Denmark 0.4% 2021 β€” falling
76 Malaysia 0.4% 2021 β€” rising
77 Algeria 0.4% 2021 β€” falling
78 Eswatini 0.3% 2021 β€” volatile
79 Suriname 0.3% 2021 β€” rising
80 Latvia 0.3% 2021 β€” falling
81 Ukraine 0.3% 2021 β€” rising
82 Romania 0.3% 2021 β€” falling
83 Kazakhstan 0.3% 2021 β€” falling
84 Poland 0.3% 2021 β€” flat
85 Uzbekistan 0.3% 2021 β€” falling
86 Tunisia 0.3% 2021 β€” volatile
87 Bahamas 0.3% 2021 β€” rising
88 France 0.2% 2021 β€” volatile
89 Azerbaijan 0.2% 2021 β€” rising
90 Ghana 0.2% 2021 β€” rising
91 Slovakia 0.2% 2021 β€” volatile
92 North Macedonia 0.2% 2021 β€” volatile
93 Burundi 0.2% 2021 β€” volatile
94 Switzerland 0.2% 2021 β€” falling
95 Turkmenistan 0.2% 2021 β€” rising
96 Austria 0.2% 2021 β€” volatile
97 Syrian Arab Republic 0.2% 2021 β€” falling
98 Pakistan 0.1% 2021 β€” falling
99 Democratic People's Republic of Korea 0.1% 2021 β€” volatile
100 Philippines 0.1% 2021 β€” falling
101 Iran (Islamic Republic of) 0.1% 2021 β€” flat
102 Bulgaria 0.1% 2021 β€” volatile
103 Montenegro 0.1% 2021 β€” rising
104 Senegal 0.1% 2021 β€” rising
105 Haiti 0.1% 2021 β€” volatile
106 Spain 0.1% 2021 β€” falling
107 Chad 0.1% 2021 β€” rising
108 Italy 0.1% 2021 β€” volatile
109 Mauritania 0.1% 2021 β€” falling
110 Lao People's Democratic Republic 0.1% 2021 β€” falling
111 Uganda 0.0% 2021 β€” flat
112 Iraq 0.0% 2021 β€” volatile
113 Germany 0.0% 2021 β€” falling
114 Namibia 0.0% 2021 β€” volatile
115 Republic of Moldova 0.0% 2021 β€” rising
116 Israel 0.0% 2021 β€” volatile
117 Albania 0.0% 2021 β€” volatile
118 Greece 0.0% 2021 β€” volatile
119 Portugal 0.0% 2021 β€” volatile
120 Hungary 0.0% 2021 β€” falling
121 Cambodia 0.0% 2021 β€” falling
122 Estonia 0.0% 2021 β€” volatile
123 Uruguay 0.0% 2021 β€” volatile
124 Djibouti 0.0% 2021 β€” volatile
125 Bosnia and Herzegovina 0.0% 2021 β€” volatile
126 Armenia 0.0% 2021 β€” rising
127 Dominican Republic 0.0% 2021 β€” volatile
128 Afghanistan 0.0% 2021 β€” falling
129 Gambia 0.0% 2021 β€” flat
129 Croatia 0.0% 2021 β€” volatile
129 Jordan 0.0% 2021 β€” flat
129 Libya 0.0% 2021 β€” flat

Regions and income groups

Aggregates are excluded from the country ranking above so that a region can never outrank a country.

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Lake water quality trophic state by country. Statizoid, drawing on United Nations Statistics Division, SDG Global Database. Retrieved 15 August 2026, from https://environment.statizoid.com/stat/lake-water-quality-trophic-state-percent/

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About this data

Indicator
Lake water quality trophic state (%)
Unit
%
Source
United Nations Statistics Division, SDG Global Database
Licence
UN SDG Global Database (open, attribution requested)
Coverage
170 places, 850 data points, 2017–2021
Last refreshed