Administration de la gestion de l'eau
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According to the WFD the assessment of the stauts of the surface water bodies is based on the evaluation of the monitoring results. According to Article 8 of the WFD, Member States must ensure the establishment of monitoring programs, inter alia, for surface waters. The monitoring of the surface water bodies is carried out at surveillance monitoring stations and operational measuring points. For surface waters, the WFD also foresees an investigative monitoring.
Drinking water shortage (level « red »)
Drinking water shortage (level « orange »)
The surveillance monitoring is carried out respecting the luxemburgish legislation (règlement grand-ducal du 15 janvier 2016) on 4 monitoring sites. Three of them are located in the international river basin district of the Rhine, one is located in the inernational river basin district of the Meuse.
In the detailed programme of measures, the types of measures related to hydromorphology (HY) and urban wastewater management (SWW) which are defined in the catalogue of measures of the second river basin management plan, were assigned to the individual water bodies. The objective of this assignation is to identify for each water body those measures that will help to reduce the pressures and deficits present in the water body, thereby improving its status or maintaining its good status. The hydromorphological measures include the improvement of the ecological continuity, the renaturation of water courses as well as the regulation of the minimal flow. Some hydromorphological types of measures can have a positive effect on the reduction of floods.
The lake "Haute Sure" in Esch-sur-Sûre
A water level measured on a gage station represents a water height, referred to a graduated gauge. The gauge zero never has to achieve negative values.
The surface water typology was determined on the basis of geographical , geological, morphological and hydrological characteristics. The Luxembourgish surface water typology comprises six types. For all six types the reference conditions, which would be achieved if there were no anthropogenic pressures impacting surface waters, are described in fact sheets. The reference conditions correspond to the high status of surface water bodies.
Overall evaluation of the hydromorphological status per surface water body. The assessment of the hydromorphological status is based on the mapping and the assessment of the structural quality of the Luxembourgish watercourses. The quality element morphology has not been covered in the framework of the structural quality mapping, but only the two quality elements related to continuity and morphology. The hydromorphological status is assessed in 5 classes.
According to the water framework directive (Directive 2000/60/CE), the biological parameter fish are monitored in surface water bodies in order to determine the ecological status. Fish react sensitively to the continuity and the hydrological flow of surface water. Fish are therefor sampled in the SWB which have deficits here. The methodology applied for sampling is the standard NF EN 14962:2006 "water quality − guidance on the scope and selection of fish sampling methods".