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Additional information, figure 1
The geographical coverage is the 38 EEA member countries, but only complete time series are included in the analysis. The selected time series are aggregated to European level by averaging across all sites for each year.
Two time series are shown – a longer time series representing fewer water bodies and a shorter time series representing more water bodies.
Upper chart:
Nitrate in groundwater: The number of groundwater bodies included per country is given in parenthesis:
1992-2020: Europe (461), Austria (13), Belgium (24), Bulgaria (25), Denmark (1), Estonia (16), Finland** (7), France (247), Germany (66), Ireland (50), Portugal (2), Slovakia (4), Slovenia (5), Spain (1).
2000-2020: Europe (1012), Austria (14), Belgium (37), Bulgaria (40), Cyprus (6), Czechia (64), Denmark (4), Estonia (18), Finland** (8), France (437), Germany (175), Ireland (66), Italy (10), Latvia (15), Malta (2), Portugal (10), Serbia (21), Slovakia (16), Slovenia (6), Spain (26), Switzerland (37).
Nitrate in rivers: The number of river monitoring sites included per country is given in parenthesis:
1992-2020: Europe (862), Albania (3), Austria (39), Belgium (26), Czechia (22), Denmark* (37), Estonia (34), Finland** (61), France** (184), Germany (119), Ireland** (4), Latvia (13), Lithuania (22), Poland (13), Slovakia (8), Slovenia (7), Spain** (153), Sweden* (111), Switzerland (6).
2000-2020: Europe (1291), Albania (7), Austria (41), Belgium (34), Cyprus (14), Czechia (22), Denmark* (38), Estonia (36), Finland** (70), France** (241), Germany (122), Iceland (1), Ireland** (50), Italy (25), Latvia (16), Lithuania (22), North Macedonia (18), Poland (16), Romania (89), Serbia (34), Slovakia (8), Slovenia (8), Spain** (250), Sweden* (113), Switzerland (16).
(* = all data total oxidised nitrogen, ** = some data total oxidised nitrogen)"
Lower chart:
Phosphate in rivers: The number of river monitoring sites included per country is given in parenthesis:
1992-2020: Europe (618), Austria (27), Belgium (24), Bulgaria (32), Czechia (10), Denmark (39), Estonia (35), Finland (60), France (166), Ireland (4), Latvia (13), Lithuania (22), Norway (21), Slovakia (6), Slovenia (9), Spain (33), Sweden (111), Switzerland (6).
2000-2020: Europe (945), Albania (3), Austria (41), Belgium (28), Bulgaria (53), Croatia (23), Czechia (10), Denmark (40), Estonia (37), Finland (67), France (240), Iceland (1), Ireland (11), Italy (18), Latvia (16), Lithuania (22), Norway (21), Romania (88), Serbia (34), Slovakia (6), Slovenia (10), Spain (47), Sweden (113), Switzerland (16).
Total phosphorus in lakes: The number of lake monitoring sites included per country is given in parenthesis:
1992-2020: Europe (265), Austria (5), Denmark (5), Estonia (7), Finland (144), Germany (2), Lithuania (2), Netherlands (6), Norway (2), Slovenia (2), Sweden (90).
2000-2020: Europe (341), Austria (27), Belgium (1), Bulgaria (1), Croatia (3), Denmark (5), Estonia (8), Finland (168), France (1), Germany (6), Lithuania (3), Netherlands (6), Norway (3), Poland (9), Serbia (3), Slovenia (3), Sweden (95).
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Previous comments
PT - Nitrates in groundwater 1992-2020: We don't understand why there is only two GWB for PT. At the "20220815_present_state_2022_v1_CSI020" file you used 75 GWB.
Nitrates in groundwater 2000-2020: We don't understand why you included only 10 GWB. At the "20220815_present_state_2022_v1_CSI020" file you used 75 GWB.
Regarding nitrate in rivers Portugal reported data for the period 2010-2020.
It is considered that there should be reference to the Member States that reported data even with shorter series.
Regarding total phosphorus in lakes Portugal reported data for the period 2010-2020.
We would like to highlight that in mainland of Portugal there are no lakes but reservoirs. Consequently the water quality is different.
DK - Nitrate in groundwater. We cannn't understand that there only is 1 groundwater body with data for the period 1992-2020 and 4 for groundwater body with data for the period 2000-2020.
Looking at the reporting to the nitrate directive we have about 400 groundwater monitoring stations that have been active since c. 1990. These data have been reported over the years.
We can address two issues that can cause problems for the time series:
Thus with this in mind there should still be more stations that the very few ones you get.
Please, contact us, so that we can sort this out.