This layer contains the inspections and controls carried out by the SICOPOL service of the Water Management Administration.

Status of the authorization demands.

Riverbed improvement by permanent removal of heavy stabilization techniques or by their replacement with more natural techniques, in order to recreate a riverbed composed of natural substrate with a low flow channel, a variation of depths and a diversity of flow rates, thus creating microhabitats for aquatic flora and fauna.

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

Preservation of a corridor for a dynamic river development, where the land is ever not – or extensively used, whose width is compliant with the river typology, which ensures a lateral connection to the alluvial plain, thus creating diversified aquatic and terrestrial habitats.

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.

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

Phytoplancon is one of the 4 biological quality elements (BQE) used for the assessment of the ecological status of the surface water bodies. The assessment is made in 5 classes : high (blue) - good (green) - moderate (yellow) - poor (orange) - bad (red). The evaluation of this BQE is only relevant for the large rivers where the quantity of phytoplancton is significant and can be evaluated. Therefore phytoplancton is assessed in natural water bodies of type VI an in heavy modified waterbodies (HMWB) presenting a lake character, as the HMWB Sûre (WB III-2.2.1) and the HMWB Our (WB V-1.2). The frequency for phytoplancton monitoring is annually with 6 samples between April and October.

River protection against the impact of adjacent land use (agricultural runoff such as nutrients and pesticides, fine sediments, cattle trampling, erosion, etc.) through the establishment of fenced riparian buffer stripes, free from any use, where a typical riparian vegetation will grow and provide shade for the river.

Macroinvertebrates are one of the 4 biological quality elements (BQE) used for the assessment of the ecological status of the surface water bodies. The assessment is made in 5 classes : high (blue) - good (green) - moderate (yellow) - poor (orange) - bad (red). Macroinvertebrates are sensitive to the hydromorphology, water quality, biological continuity , water regime and acidification.