Government and Municipalities of Québec

The permanent sample plot is a circular sample unit that covers an area of 400 m2. For each tree, the species, diameter, defoliation of softwoods and the quality of hardwoods are observed and measured. Some of these stems are the subject of further studies in order to know their height and age....

The property assessment roll presents the inventory of buildings located on the territory of a municipality, assessed on the same basis and at the same date. It is the central element of the Quebec municipal tax system. Here you will find the 1,140 XML files representing all the assessment roles...

This layer represents all the flora and fauna occurrences (1) in a precarious situation in the [Quebec Natural Heritage Data Center (CDPNQ)] (https://www.quebec.ca/gouvernement/gouvernement-ouvert/transparence-performance/indicateurs-statistiques/donnees-especes-situation-precaire). The purpose...

The theme on physicochemical monitoring of rivers and rivers presents data from all the stations of the water quality monitoring networks in rivers in Quebec and the St. Lawrence River sampled between 2000 and 2020. The purpose of networks for monitoring general water quality is to characterize,...

Every year, since 1967, the Ministère des Forêts, de la Faune et des Parcs (MFFP) has been conducting an aerial survey of damage caused by the main insects and diseases that attack trees. This fact sheet focuses exclusively on data on damage caused by spruce budworm (TBE). The aerial survey is...

Note that this version of the Quebec building repository is an improved version that incorporates the data included in the raw building footprints originally released. The original data will remain available at [next link] (https://www.donneesquebec.ca/recherche/dataset/empreintes-de-batiments)...

List of active factories with permits consuming more than 2000 cubic meters of unworked woody material, such as roundwood, shavings, sawdust, planers, bark, etc. In addition, category 8 is still included. It is represented by pulp and paper mills that do not require wood processing permits since...

This theme presents the index of water health along the banks of the St. Lawrence River. It makes it possible to determine if the sites present risks to human health and if they are suitable for swimming. These data are the result of an exploratory monitoring program that aims to raise awareness...

This thematic layer represents the characterization of the hardness of surface water in Quebec for the period 2005 to 2019. The hardness is presented according to the medians calculated from the concentrations of calcium and magnesium ions in seven classes. Water hardness influences the toxicity...

In order to effectively fight against aquatic invasive species, the Ministry of the Environment, the Fight against Climate Change, Wildlife and Parks has formulated a series of best practices. Among these good practices, cleaning watercraft greatly reduces the risks of dispersal of aquatic...

As of September 20, 2024, you can find the data for the building footprint layer using the [Quebec Building Repository] sheet (https://www.donneesquebec.ca/recherche/dataset/referentiel_bati). You will have access to improved data with increased territorial coverage. Therefore, the “Building...

The 2023 mapping of potential wetlands in Quebec (CMHPQ) 2023, released by the Directorate of Ecological Knowledge (DCE), provides up-to-date information on the potential presence of wetlands for the entire province of Quebec. In particular, version 2023 contains the classification of potentially...

As part of measure 2.6 of the 2013-2020 Climate Change Action Plan, the MELCC financed two projects specific to the St. Lawrence river section and aimed at supporting municipalities facing the risks of erosion and flooding. The team from the Marine Geosciences Laboratory of the Department of...

This theme presents the trophic status of lakes monitored as part of the Voluntary Lake Monitoring Network (RSVL) between 2004 and 2020. The trophic state is the result of the compilation of data acquired as part of this network. Trophic levels are used to classify lakes according to their degree...

Note that topographic maps at a scale of 1/100,000 are no longer updated. For the latest update date, see the [metadata] (ftp://transfert.mern.gouv.qc.ca/public/diffusion/RGQ/Documentation/BDAT/Metadonnees_BDAT100k_NordSud.xls). The reference cartographic data is now constituted according to a...

This layer shows the location of the sampled stations classified according to the Eastern Canada Diatom Index (IDEC). It contains data obtained since 1935 that was converted to version 3 of the index (Lavoie et al. 2014). Benthic diatoms are microscopic unicellular algae that line the bottom of...

These three satellite mosaics cover the entire territory of Quebec and include images taken in 2018, 2019 and 2020. The spectral bands are blue (band 2), near infrared (band 8), and short wave infrared (band 11). The Copernicus Sentinel-2 mission includes a constellation of two satellites in...

Municipalities with established populations of Ixodes scapularis ticks (blacklegged ticks) are municipalities where tick populations reproduce and survive from one year to the next. This indicator makes it possible to identify municipalities where their presence suggests a higher risk of tick...

This map illustrates the terrestrial and marine reliefs of Quebec and surrounding territories, at a scale of 1/2,000,000. Color ranges representing altitude classes and blending offer a summary of the relief and the major physiographic groups of Quebec. This map of the relief of Quebec is...

Orthophotographic mosaics present an aerial view of Quebec territory at different times. They can be combined with topographic data to contribute to better analysis of the territory. Each image has been analytically straightened to eliminate inaccuracies caused by the camera being tilted at the...