Country Period River Stations Very negative Marginally negative No change Marginally positive Very positive Sen slope (mg O2/l) Sen slope (%)
Europe 1992-2018 506 282 34 160 5 25 -0.08 -1.8
Albania 1992-2018 4 0 0 0 0 4 0.24 9.5
Austria 1992-2018 44 21 3 20 0 0 -0.04 -2.0
Belgium 1992-2018 26 8 1 11 0 6 -0.04 -0.7
Bulgaria 1992-2018 58 41 2 15 0 0 -0.16 -2.7
Czechia 1992-2018 19 13 1 4 1 0 -0.07 -1.6
Estonia 1992-2018 38 8 3 20 1 6 -0.01 -0.1
Finland 1992-2018 5 4 0 1 0 0 -0.02 -1.2
France 1992-2018 156 118 16 19 0 3 -0.09 -3.0
Ireland 1992-2018 3 3 0 0 0 0 -0.05 -3.1
Latvia 1992-2018 10 7 1 2 0 0 -0.01 -0.9
Lithuania 1992-2018 23 13 0 5 2 3 -0.04 -1.1
North Macedonia 1992-2018 1 1 0 0 0 0 -0.13 -2.6
Slovakia 1992-2018 8 7 1 0 0 0 -0.08 -2.1
Slovenia 1992-2018 8 7 1 0 0 0 -0.15 -4.1
Spain 1992-2018 79 16 1 59 1 2 -0.12 -0.7
United Kingdom 1992-2018 23 15 4 3 0 1 -0.02 -1.3
Europe 2000-2018 977 318 56 455 28 120 -0.04 -0.1
Albania 2000-2018 5 0 0 2 0 3 0.09 6.7
Austria 2000-2018 46 1 4 36 1 4 0.0 0.9
Belgium 2000-2018 36 10 1 13 1 11 0.0 0.9
Bulgaria 2000-2018 75 27 4 39 2 3 -0.1 -1.9
Croatia 2000-2018 22 8 1 13 0 0 -0.04 -1.9
Cyprus 2000-2018 4 2 0 1 0 1 -0.01 -1.6
Czechia 2000-2018 19 10 2 7 0 0 -0.05 -1.6
Estonia 2000-2018 40 3 3 20 4 10 0.0 0.2
Finland 2000-2018 5 2 0 3 0 0 -0.05 -2.6
France 2000-2018 211 128 17 61 3 2 -0.07 -3.7
Ireland 2000-2018 51 16 4 29 2 0 -0.02 -1.4
Latvia 2000-2018 14 8 2 4 0 0 -0.04 -2.2
Lithuania 2000-2018 23 8 1 12 0 2 -0.03 -1.1
North Macedonia 2000-2018 4 2 0 2 0 0 -0.11 -2.7
Poland 2000-2018 68 22 3 40 0 3 -0.12 -1.3
Romania 2000-2018 101 24 9 63 3 2 -0.07 -0.9
Serbia 2000-2018 34 18 1 13 0 2 -0.04 -1.2
Slovakia 2000-2018 8 1 1 6 0 0 -0.05 -1.6
Slovenia 2000-2018 10 8 1 1 0 0 -0.16 -5.6
Spain 2000-2018 175 12 1 77 12 73 0.04 9.5
United Kingdom 2000-2018 25 8 1 12 0 4 -0.01 -0.2