Inventory of buildings and land subject to the right of pre-emption. The right of pre-emption allows the City of Montreal to buy certain buildings or land in priority over any other purchaser in order to carry out projects for the benefit of the community.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Digital terrain models offer a representation of the relief south of the 52nd parallel, in the form of an elevation matrix. This matrix makes it possible to visualize the territory in perspective and to perform three-dimensional spatial analyses, using appropriate software. A module specialized in three-dimensional data processing, such as 3D Analyst or Spatial Analyst, is required to visualize the digital altitude model in three dimensions. This digital altitude model (10-meter pixel matrix) is obtained by processing altimeter data (level curves and elevation points) from ** [topographic databases on a scale of 1/20,000] (https://www.donneesquebec.ca/recherche/fr/dataset/cartes-topographiques-a-l-echelle-de-1-20-000) **.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Cartographic dissemination of data on socio-economic land use for the territory of the City of Longueuil.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Mass movement**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Land use mapping.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Geospatial vector data for the division of properties in the agglomeration of Montreal containing general information on property assessment units, including the codification of use (CUBF), approximate dimensions and registration number. IMPORTANT: This division has no legal value and should not be confused with cadastral division.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Please note that a web service is currently under development and will be launched in the fall of 2025. Stay on the lookout! ## #Avertissement :### ### #Le broadcaster cannot guarantee the accuracy, precision, or completeness of the data nor can it be held responsible for the conclusions that arise from their use. This data has no legal value. #### The Geobase of the Quebec Hydrographic Network at High Resolution (GRHQ-HR) offers an up-to-date representation of the hydrographic network with very high precision (scale of 1/2,000). This repository, produced from lidar data, is offered by hydrographic division unit (UDH). The deployment of this geobase is carried out progressively by levels of completeness (NC). Ultimately, it will cover the territory of southern Quebec. During the deployment phase of the repository, [the Quebec Hydrographic Network Geobase (GRHQ)] (https://www.donneesquebec.ca/recherche/fr/dataset/grhq), the GRHQ-HR as well as [potential flow beds] (https://www.donneesquebec.ca/recherche/dataset/lits-d-ecoulements-potentiels-issus-du-lidar) from the lidar will be simultaneously available on Data Quebec for this portion of the territory. The GRHQ-HR includes a 3D linear geometric network, which represents the continuity and direction of flow in all types of aquatic entities (streams, lakes, wetlands, etc.). This network is created by modeling potential flow beds and completed by central flow lines (simplified representation of hydrographic surfaces in central lines). This geobase is part of a strategy to update the cartographic map of Quebec's hydrography. It was carried out in partnership with the Ministry of the Environment, the Fight against Climate Change, Wildlife and Parks (MELCCFP). # #Caractéristiques UDH completion levels## Each level of completeness characterizes the level of work, editing, validation, and descriptive content of the datasets. Thematic and toponymic data will enhance the datasets. ### #NC -1 (primary geometric network) #### * Potential and filamentary flow beds derived from hydrographic, oriented, and topological surfaces. * Priority level defined (allows network analyses). * Presence of certain basic attributes (sustainability, network connection, accumulation of flows, Strahler and Horton orders, distance from upstream, distance from downstream). * Linear reference system (road numbers, vertex M coordinates). * Hydrographic surfaces of the GRHQ on a scale of 1/20,000 (2D). * Presence of some toponyms as an attribute. * Hydrocoherent digital terrain models (GeoTIFF). * Flow accumulation matrices (GeoTIFF). * Flow direction matrices (GeoTIFF). ### #NC -2 (enhanced geometric network) #### * NC-1 features. * Update of hydrographic surfaces by photogrammetry. * Correction of errors in the path of potential flow beds and update of downstream filamentaries. * Partial addition of thematic hydrographic data (dams, falls, reefs, islands, wetlands, rapids). * Lidar survey date index. * Topological nesting of matrices. * Update of hydrocoherent numerical terrain models. * Update of flow direction matrices. * Update of flow accumulation matrices. ### #NC -3 (thematic bonus) #### * Characteristics of the NC-2. * Hydrographic themes completed (breakwaters, quays). * Addition of toponyms. ### #NC -4 (improvement of toponymic content) #### * NC-3 features. * Continuity of toponymic data on geometries. * Addition of named entities. **This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Land use and occupancy density reflect, at the normative level, the main directions of land use planning in the agglomeration of Montreal. The data available in this set mainly comes from the mapping in Chapter 3 of the Land Use Plan and Development Plan for the Agglomération de Montréal, i.e. __land use__ and __occupancy density__. This urban planning and development plan for the agglomeration of Montreal outlines the main parameters that will guide the Montreal agglomeration council in decisions relating to land use planning in the coming years. From a perspective of sustainable development, this document guides decisions that shape the territory in order to promote compact and greener neighborhoods, increase public and active transportation, support the economic dynamism of the agglomeration and highlight areas of interest. Consult the [interactive map] (https://smvt.maps.arcgis.com/apps/webappviewer/index.html?id=d152aaa85b6f4e9086cecdf10c7456db) of the Planning and Development Plan to visualize the thematic data. **This third party metadata element was translated using an automated translation tool (Amazon Translate).**

EN This shadow map illustrates terrain-induced shadows at 17:45 on August 12th, 2026. The solar eclipse will not be visible within the shaded areas. Shadow coverage may vary depending on the simulation resolution and the specific time. IS Skuggakortið sýnir staði þar sem skuggar falla klukkan 17:45 þann 12. ágúst 2026. Sólmyrkvinn mun ekki sjást á þeim svæðum sem eru í skugga. Skuggasvæðin geta verið breytileg vegna upplausnar hæðarkortsins og á öðrum tímum.

The digital terrain model (DTM) is a simplified representation of ground altimetry. The available data is in the form of an irregular triangular mesh (TIN). This is polygon numerical geographic data constructed by triangulating a set of points. The vertices are connected to a series of segments to form a mesh of triangles of different dimensions. This representation can be used as a basis for the 3D buildings of the digital base model. It should be noted that the data made available by the City is proposed for planning purposes and not for construction purposes given the associated decimeter details. The [3D buildings 2016 (LOD2 model with textures)]] (https://donnees.montreal.ca/ville-de-montreal/batiment-3d-2016-maquette-citygml-lod2-avec-textures2), the [2013 3D buildings (2013 3D buildings (CityGML LOD2 model with textures)] (/city-of-montreal/model-numeric-plateau-mont-royal-buildal-build2-buildings-lod2-with-textures), or the [3D buildings 2009 (CityGML LOD2 model with textures)] (/city-of-montreal/model-numeric-plateau-mont-royal-build2-buildings-lod2-with-textures), or the [3D buildings 2009 (CityGML LOD2 model with textures)] (/city-of-montreal/model-numerique-plateau-mont-royal-batiments-lod2-with-textures), or the [3D buildings 2009 (CityGML LOD2 model with textures)] (/city-of-montreal/model-numeric-s-citygml-lod2-with-textures) complement the digital terrain model in the urban territorial representation of Montreal. The [elevation data from aerial LiDAR] (/city-of-montreal/lidar-aerien-2015) are also available on the portal.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**