| Country | Period | River stations | Very negative | Marginally negative | No change | Marginally positive | Very positive | Sen slope (mg/l P) | Sen slope (%) |
|---|---|---|---|---|---|---|---|---|---|
| Europe | 1992-2017 | 799 | 398 | 41 | 296 | 12 | 52 | -0.0019 | -1.6 |
| Belgium | 1992-2017 | 30 | 20 | 1 | 8 | 0 | 1 | -0.0092 | -2.7 |
| Bulgaria | 1992-2017 | 46 | 3 | 2 | 36 | 3 | 2 | -0.0013 | -0.4 |
| Czechia | 1992-2017 | 8 | 5 | 0 | 3 | 0 | 0 | -0.0046 | -2.3 |
| Denmark | 1992-2017 | 39 | 21 | 2 | 11 | 1 | 4 | -0.0008 | -0.9 |
| Estonia | 1992-2017 | 38 | 21 | 0 | 13 | 1 | 3 | -0.0011 | -1.5 |
| Finland | 1992-2017 | 71 | 30 | 4 | 34 | 1 | 2 | -0.0002 | -0.9 |
| France | 1992-2017 | 171 | 138 | 9 | 22 | 1 | 1 | -0.0034 | -3.6 |
| Germany | 1992-2017 | 105 | 69 | 5 | 24 | 1 | 6 | -0.0011 | -1.7 |
| Ireland | 1992-2017 | 4 | 1 | 0 | 3 | 0 | 0 | -0.0006 | -1.6 |
| Latvia | 1992-2017 | 15 | 1 | 0 | 14 | 0 | 0 | -0.0001 | -0.3 |
| Lithuania | 1992-2017 | 24 | 16 | 1 | 6 | 0 | 1 | -0.0036 | -2.3 |
| Norway | 1992-2017 | 44 | 2 | 0 | 20 | 4 | 18 | 0.0 | 1.4 |
| Slovakia | 1992-2017 | 8 | 4 | 0 | 4 | 0 | 0 | -0.0024 | -1.7 |
| Spain | 1992-2017 | 43 | 9 | 2 | 28 | 0 | 4 | -0.0009 | -0.5 |
| Sweden | 1992-2017 | 110 | 28 | 13 | 65 | 0 | 4 | -0.0001 | -0.9 |
| Switzerland | 1992-2017 | 6 | 6 | 0 | 0 | 0 | 0 | -0.0008 | -3.9 |
| United Kingdom | 1992-2017 | 28 | 18 | 2 | 5 | 0 | 3 | -0.0061 | -2.4 |
| Europe | 2000-2017 | 1163 | 413 | 90 | 548 | 34 | 78 | -0.0013 | -1.5 |
| Belgium | 2000-2017 | 36 | 18 | 3 | 10 | 1 | 4 | -0.0043 | -1.2 |
| Bulgaria | 2000-2017 | 71 | 22 | 5 | 42 | 1 | 1 | -0.0061 | -2.4 |
| Croatia | 2000-2017 | 23 | 15 | 0 | 8 | 0 | 0 | -0.0025 | -4.7 |
| Czechia | 2000-2017 | 8 | 4 | 1 | 2 | 0 | 1 | -0.0064 | -3.1 |
| Denmark | 2000-2017 | 40 | 15 | 2 | 18 | 1 | 4 | -0.0004 | -0.8 |
| Estonia | 2000-2017 | 41 | 16 | 3 | 15 | 3 | 4 | -0.0007 | -1.2 |
| Finland | 2000-2017 | 80 | 26 | 9 | 39 | 3 | 3 | -0.0001 | -1.2 |
| France | 2000-2017 | 245 | 108 | 20 | 105 | 1 | 11 | -0.0019 | -2.9 |
| Germany | 2000-2017 | 108 | 36 | 7 | 59 | 2 | 4 | -0.0007 | -1.3 |
| Iceland | 2000-2017 | 1 | 0 | 0 | 1 | 0 | 0 | 0.0001 | 1.3 |
| Ireland | 2000-2017 | 33 | 24 | 2 | 6 | 0 | 1 | -0.0011 | -4.5 |
| Latvia | 2000-2017 | 18 | 0 | 0 | 13 | 4 | 1 | 0.0006 | 2.4 |
| Lithuania | 2000-2017 | 24 | 9 | 2 | 13 | 0 | 0 | -0.0023 | -2.4 |
| North Macedonia | 2000-2017 | 18 | 0 | 0 | 11 | 2 | 5 | 0.0164 | 4.6 |
| Norway | 2000-2017 | 44 | 1 | 0 | 28 | 3 | 12 | 0.0001 | 1.7 |
| Romania | 2000-2017 | 98 | 39 | 6 | 46 | 2 | 5 | -0.0021 | -2.9 |
| Serbia | 2000-2017 | 31 | 10 | 4 | 14 | 2 | 1 | -0.0011 | -1.1 |
| Slovakia | 2000-2017 | 9 | 6 | 1 | 1 | 0 | 1 | -0.0049 | -3.4 |
| Spain | 2000-2017 | 56 | 1 | 0 | 35 | 6 | 14 | 0.0031 | 4.4 |
| Sweden | 2000-2017 | 112 | 40 | 24 | 45 | 2 | 1 | -0.0002 | -2.1 |
| Switzerland | 2000-2017 | 15 | 8 | 0 | 6 | 0 | 1 | -0.0003 | -1.9 |
| United Kingdom | 2000-2017 | 41 | 10 | 1 | 25 | 1 | 4 | -0.0066 | -0.8 |