Restoration of the ecological continuity for fish, macroinvertebrates, sediments and terrestrial animals by culverts, through its permanent suppression, or through its adaptation in order to reach natural conditions of substrate, depth, flow rate, luminosity and riverbank structure.

Evaluation of the quality element "hydrological regime" per surface water body

The evaluation of the groundwater bodies is based on the quantitative and the chemical status. The groundwater bodies can be classified as good or as bad.

Evaluation of the quality element "continuity" per surface water body

Macrophytes are a sub-element of the biological quality element (BQE) of the aquatic flora used for the assessment of the ecological status/potential. The assessment is made in 5 classes : high (blue) - good (green) - moderate (yellow) - poor (orange) - bad (red). Macrophytes are particularly sensitive to organic pollution, trophy and hydromorphology.

Evaluation of the quality element "morphological conditions" per surface water body

The WFD's (2000/60/CE) quantitative status objectives aim to ensure a balance between groundwater withdrawal and recharge.

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).

Monitoring stations for groundwater quality and quantity of the 3rd cycle (2015-2020) regarding the water framework directive (2000/60/CE).

Phythobenthos (Diatoms) are a sub-element of the biological quality element (BQE) of the aquatic flora used for the assessment of the ecological status/potential. The assessment is made in 5 classes : high (blue) - good (green) - moderate (yellow) - poor (orange) - bad (red). The diatom assemblages are different in function of concentrations of nutrients and organic pollutants.