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Last discussed by EEA
May 29, 2020 03:32 PM
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JBartels Dear Sir, Madam,

For an EU wide project we are checking the presence of Hexachlorocyclohexane (HCH) in ground and surface waters. For this we are using the WISE WFD database (
https://www.eea.europa.eu/data-and-maps/data/wise-wfd-4), specifically the information on groundwater bodies. In this dataset quantities of HCH are not recorded.
Is it possible to obtain this information?
If that is not the case, is there another way to assess how much HCH is present?

Furthermore, could you give us information on how it is determined that HCH is present in a certain groundwater body?
We have found in a different dataset (Waterbase Water Quality, https://www.eea.europa.eu/[…]/waterbase-water-quality-2) that HCH is recorded in instances where there are no measurements above the detection limit (or Limit of Quantification (LOQ)). How can we assure that this is not the case in this dataset?

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Last discussed by EEA
May 25, 2020 10:15 AM
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rainerU How to report an error in the WISE data?

I discovered an error in the "WISE other large rivers and tributaries" shape file downloadable at
https://www.eea.europa.eu/[…]/wise-large-rivers-and-large-lakes Where can I report this kind of error? I did not find any mail contact address, online contact form or similar.
Description of the error: In the above mentioned shape file, the French river Cher is named Indre and the river Indre is missing in the data.

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Last discussed by desifi2621
May 13, 2020 04:45 PM
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laurent____79 Pour bien comprendre le fonctionnement global du cycle de l’eau sur les continents il faut raisonner par bassin versant.

Il faut voir le bassin versant comme un château d’eau, ce château d’eau est alimenté par les pluies et les pluies contientales sont provoquées à 70% par l’évapotranspiration. Les rivières sont le drainage naturel du bassin , comme 30% des pluies proviennent de la mer, si on ne veut pas que le bassin se vide les rivières ne doivent pas rejeter plus de 30% des précipitations. Ce système fonctionne bien quand le bassin versant est couvert de foret de feuillus parce que les arbres utilisent 70% des précipitations pour alimenter le cycle (pas rétention dans les sols) et ne laisse repartir à la mer que les 30% d’excès.

Actuellement les rivières françaises rejettent plus de 70% des précipitations ce qui provoque des inondations et un assèchement mathématique du bassin et des canicules puisque la végétation n’aura pas suffisamment d’eau pour entretenir le cycle et évacuer la chaleur.

Les arbres assurent de façon autonome (et depuis des millions d’années) le bon fonctionnement du cycle de l’eau parce qu’ils assurent une évaporation proportionnelle à la chaleur et donc régule parfaitement le climat. Plus il fait chaud plus la végétation transpire, la quantité de vapeur d’eau dans l’atmosphère augmente et limite la puissance du rayonnement solaire qui arrive jusqu’au sol (effet parasol) . Quand la température baisse la quantité de vapeur d’eau diminue (par condensation ) et les sols reçoivent un peu plus d’énergie solaire. Ce système s’autorégule tant qu’il y a de l’eau et donc de la végétation dans les bassins versants. C’est pourquoi les zones tempérées de la planète sont couvertes d’eau ou de végétation.

Les forets de feuillus gardent 70% des pluies dans les sols grâce à la profondeur du système racinaire des arbres mais surtout à la forte incorporation de biomasse dans les sols. un arbre a globalement le même volume de bois au dessus du sol qu’en dessous, ce système racinaire (comme les branches) se renouvelle en permanence, la biomasse créée dans les sols par les racines mortes fait office « d’éponge » qui servira à alimenter l’arbre. C’est un système parfaitement autonome ou les sols s’enrichissent fortement même si on exploite le bois en surface.[MOGED]

Quand on dit que les sols agricoles se minéralisent c’est qu’ils perdent leur biomasse et ils perdent leur biomasse parce qu’ils n’en fabriquent pas assez ! Sans biomasse les sols deviennent trop perméables, les eaux qui alimentent les nappes phréatiques ne sont pas assez filtrées et les cultures manquent rapidement d’eau. La période idéale pour faire de la biomasse (et donc de la photosynthèse) c’est l’été mais pour cela il faut de l’eau, comme en France on diminue les surfaces irriguées de 10% par an pour alimenter des villes qui ne recyclent pas l’eau on amplifie la désertification, on s’attaque sérieusement à notre sécurité alimentaire , on détruit la biodiversité (un sol sec c’est un sol mort) et on en arrive même à dérégler le climat.

En France, depuis 30 ans la pluviométrie ne change pas mais c’est la répartition annuelle des pluies qui se dégrade : fortes précipitations l’hiver et sécheresse l’été. On réglera le problème en veillant à ce que les rivières ne rejettent pas plus que 30% des précipitations , pour cela il faut faire des réserves collinaires en tête de bassin pour capter les ruissellements de surface, réguler le débit des rivières à partir de ses réserves (ce qui limitera les inondations et les assecs) et recycler l’eau dans les sols (donc aucun rejet en rivière) et végétaliser au maximum. La suppression des retenues sur les cours d’eau provoquent des inondations et un assèchement du bassin, les retenues créent des zones humides qui maintiennent l’eau dans le bassin versant .

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Last discussed by laurent____79
May 12, 2020 08:56 AM
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TuijaLa Dear all,

For research purposes, I would like to download Water Framework Directive (WFD) reference water quality spatial data (GIS) from several European countries including UK. This data base
https://www.eea.europa.eu/[…]/wise-wfd-spatial-3 contains the data I need for most of the countries but data from UK is missing. Would someone know where I could find spatial water quality data also for UK?

Many thanks for help!

With kind regards,
Tuija

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Last discussed by EEA
May 07, 2020 03:26 PM
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blc On the following web page https://www.eea.europa.eu/themes/water#tab-datamaps
there is a snapshot of a figure of the The European environment and outlook 2020 (figure 4.3 p108) which says that 60% of the water abstracted is returned to the environment.
It is not clear to me what happens to the remaining 40%. I assume that it accounts for water that is 'captured' into products such as plants, fruits or vegetables, etc. However, my understanding is that the water capture in those elements will eventually return to the environment as well, only after a longer period.
Is that correct?

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+1
Last discussed by EEA
Apr 23, 2020 03:05 PM
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anicol Topic : Does the plastic pollution of the seas come from the rivers ?
Is the Mediterraean sea polluted ? (see
https://www.wwf.fr/mediterranee-pollution-plastique ). According to my readings, this pollution comes from the rivers and it seems logic to look for the sources of such a pollution and for the solutions. In Netherland, an ecological organization has built a barge to collect plastic in a rivers.
 What about collecting wastes from a barge in the rivers (at the least in their estuary) before being in the seas or the oceans ? (is it possible ? for the most polluted rivers ?)
I can imagine that the European Countries are not the only ones to be responsible of the pollution of the mediterranean sea...

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Last discussed by EEA
Feb 25, 2020 02:37 PM
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anicol Topic : map of the Bath water quality
I have discovered your site, through the Natura2000 project. Thank you for your remarkable work. The Data and maps you give are serious and recent (it is so difficult to obtain recent data at the local or national scale, so I didn't expect to find a so rigourous work at european scale !).
1) the natural sites with poor water quality.
the legend gives several colors : from dark blue for good quality, then blue, green, red, to grey for not evaluated. Is it possible to zoom directly on the sites with bad level of bathing water quality ? For example, the map indicates that in 2019, in France, there is 54 sites for the red color (54 sites with poor quality) : what are these 54 sites ?
2) bathing water : in the see or ocean / in a lake or a river
Is it possible to know what are the pollutants on each specific "bathing sites" ? As the sites with a poor quality (or insufficient quality or forbidden sites) are rare, is it possible to get the information about the reasons of the bad quotation (or interdiction). The countries without any maritim coast (Hungary for example), or with many coasts (Netherland) do not have the same polluting risks.
3) honesty of the countries
The example of Tchernobyl stay in our memory : a country wich detects a big pollution would be attempted to cover up the bad results. Who makes the measurements : an independant european agency with local employees ? a national agency ? After Techrnobyl (the russian site), the information was "there is a big problem in Russia, but the european countries are not concerned by this pollution, because the clouds didn't cross the borders".
Another example : if a country like Italy or Greece is very touristic, the announcement of bad results concerning the bath water would be deplorable and would explain the reasons to truncate some bad results.

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Last discussed by EEA
Feb 14, 2020 02:44 PM
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sven_c Hello,
I am working on water quality in European rivers. I try to collect data on BOD but I need the location of the station collecting the data. I found this image:
https://www.eea.europa.eu/[…]/overview-of-soe-monitoring-stations
My question is whether a shapefile exists with the location of the monitoring stations in the EU rivers. At some point I will have to connect the data on water quality data with data on quantity (discharge). Does this list also include the stations collecting data on water quantity in rivers (https://www.eea.europa.eu/[…]/waterbase-quantity-monitoring-stations-1)?

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Last discussed by EEA
Jan 16, 2020 11:23 AM
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cbroughton Hello,
I am looking for some hail datasets. In particular I'm interested in the data behind the following publication:
https://www.eea.europa.eu/[…]/assessment
Is this data publicly available (for commercial use), and if so, how would I obtain this?
If there any any other publicly available datasets relating to hail for commercial use, that would be of interest also.
Thanks,
Caroline

Rating
+1
Last discussed by EEA
Jan 16, 2020 09:21 AM
 
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