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  • 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.

  • Evaluation of the quality element “morphological conditions” per surface water body

  • The hydromorphological status was determined by a monitoring compliant with the Water Framework Directive (Directive 2000/60/EU). The elaboration of a structural quality mapping is one part of this monitoring. Within the scope of the work on the structural quality mapping, a total of 31 parameters in the area of the river bed, the river bank and the floodplain are assessed so that the structural quality mapping contains detailed information on the river morphology and the river continuity. In this case, the evaluation of the mapped sections is based on seven classes. The areas river bed, left river bank, right riverbank, left floodplain and right floodplain are represented in 5 strips.

  • The chemical status of the surface water bodies is assessed as being good or failing to achieve good chemical status. The assessment of the chemical status for the second river basin management plan is based on the list of substances of directive 2008/105/EC and the environmental quality standards established by the new directive 2013/39/EC.

  • The relatively quiet urban oases include public green areas and open spaces with a high quality of living space and an appropriate design as compensation areas within walking distance of residential and work locations. Due to their inner-city location, they do not, or do not completely, meet the above-mentioned criteria of a quiet area, e. g. by showing an increased noise level or being significantly lower. However, the urban planning context of the areas has noise-reducing properties, which lead to the fact that the urban oases in their core areas are considerably calmer than their surroundings. These areas make it possible, for example, to take short walks for those seeking peace and quietness in the immediate vicinity of their homes or workplaces.

  • Phytoplancon is one of the 4 biological quality elements (BQE) for the assessment of the ecological status of the natural water bodies. The evaluation of this BQE is only relevant for the large rivers where the quantity of phytoplancton is significant and can be evaluated. The natural water bodies of typology VI present significant phytoplancton concentrations to allow an assessment. Some of the heavy modified waterbodies (HMWB) present significant phytoplancton concentrations too, these are the HMWB Sûre (WB III-2.2.1) and the HMWB Our (WB V-1.2). The annual frequency for phytoplancton monitoring is 6 samples between April and October.

  • Risk assessment of the groundwater body regarding the good chemical state in 2027.

  • Biomonitoring is conducted primarily in urban areas near electric arc steel mills. These facilities represent potential sources of emissions of organic and metal compounds that are then transported by air to urbanized areas. Metal compounds emitted by steel mills are fixed by dust particles. Solid, liquid or gaseous organic compounds may also adsorb or be absorbed by these particles. The organic pollutants studied in a biomonitoring network are dioxins/furans (PCDD/PCDF), polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs). As an accessory, to complete the observations and to establish correlations with the other pollutants, the accumulation of heavy metals cadmium, chromium, mercury, lead, vanadium and zinc is also analysed. Translated with

  • The quiet urban landscape areas include relatively large, continuous open spaces of at least regional importance with a high recreational function and corresponding development for leisure and recreation. Its importance lies in the balancing function to the noisy and densely populated areas of the agglomeration of Luxembourg. The quiet urban landscape close to the residential area allows, for example, extensive walks with only occasional crossing of areas with higher noise levels.

  • Drinking water shortage (level « red »)