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 results of the evaluation were aggregated into an overall evaluation per mapped section.

Detailed cartography of substrate based on the analysis of 100 meters representative river sections, every 1000 meters.

Cartography of cross profiles of a representative river section every 1000 meters. The assessment of the rate of river incision was calculated from the ratio between bankfull height and bankfull width.

Detailed inventory of transversal structures which represent an obstacle to the ecological continuity for fish or sediments (e.g. weirs, dams, ramps, waterfalls).

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 five classes. The areas river bed, left river bank, right riverbank, left floodplain and right floodplain are represented in 5 strips.

Detailed inventory of crossing structures which represent an obstacle to the ecological continuity for fish or sediments (e.g. culverts).

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 five classes. The results of the evaluation were aggregated into an overall evaluation per mapped section.

This layer contains the distances to hydrological monitoring stations for which authorisations must first be clarified with the Service Hydrologie (red) or for which the latter must at least be informed (orange and yellow).

Restoration of the connection between the river and its floodplain, oxbow lake reconnection, floodplain extensification regarding land use in order to promote water retention and obtain periodic local inundations downstream. Reactivate a part of the alluvial plain by lowering soil level, thus creating an artificial alluvial plain. Measure promoting aquatic and terrestrial biodiversity of wetlands as well.

Riverbed diversification through natural substrate supply and/or through the incorporation of structural elements such as stones, rocks, stumps or trunks, in order to recreate a nature-like structure and composition of the bed load, with a low flow channel, a variability of depths and a diversity of flow rates, thus creating microhabitats for the aquatic flora and fauna.