The detailed hydrographic network shows all the flow channels visible on the territory of 12 MRCs in Montérégie. This photo-interpretation project was carried out on a scale varying from 1:500 to 1:2000, using orthophotos (spring 2020 at 20 cm resolution for the territory excluding CMM and spring 2018 at 10 cm resolution for the territory in CMM) and the shaded relief derived from LiDAR data (2008 to 2020). The project was carried out as part of the Regional Program for the Acquisition of Data on Wetlands and Water Environments (PRADMHH) and was funded by the Regions and Rurality Fund (FRR) of the Montérégie regional department of the MAMH.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

This project was carried out thanks to the financial support of component 2.2 of the MAMAH Regions and Rurality Fund (FRR). The updates were made using orthophotos from spring 2020. The project covers the territory of the MRCs of Haut-Saint-Laurent, Haute-Yamaska, Haute-Yamaska, Roussillon, Rouville, Vaudreuil-Soulanges as well as the agglomeration of Longueuil.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Matrix of slopes in degrees produced from mosaics of images of digital terrain models from different years according to sectors (2008 to 2020)**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

The characterization of shoreline strips was carried out on 400 km of agricultural watercourses for the territory of 5 MRCs in Montérégie (Beauharnois-Salaberry, Haut-Richelieu, Jardins-de-Napierville, Jardins-de-Napierville, Marguerite-d'Youville, Vallée-du-Richelieu). The results obtained by photo-interpretation, based on the width of the sections of shoreline strips calculated from the high-water line and the embankment, were aggregated to produce global results by municipality. The project was carried out as part of the Regional Program for the Acquisition of Data on Wetlands and Water Environments (PRADMHH) and was funded by the Regions and Rurality Fund (FRR) of the Montérégie regional department of the MAMH. Criteria used to characterize the conformity of shoreline strips. Riparian compliance (Criteria used according to the width of the shoreline) Non-compliant (The non-compliant shoreline has a total width of less than 3 meters) Almost compliant (The nearly-compliant shoreline has a total width of 3 meters or more, but a width of less than one meter on the embankment) Compliant (The compliant shoreline has a total width of three meters or more and a width of a minimum of one meter on the embankment) Exceptional (The exceptional shoreline has a total width of 5 meters or more and a width of 3 meters (or more from the embankment)**This third party metadata element was translated using an automated translation tool (Amazon Translate).**