Production standards (French, PDF)

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Publisher-reported update

2026-09-09

**Note that topographic maps at a scale of 1/20,000 are no longer updated. For the latest update date, see the [metadata] (ftp://transfert.mern.gouv.qc.ca/public/diffusion/RGQ/Documentation/BDTQ/Metadonnees_Topo-20K.xls). The reference cartographic data is now constituted according to a continuous information layer approach: ** [AQNetwork+] (https://www.donneesquebec.ca/recherche/fr/dataset/adresses-quebec) [Quebec Hydrographic Network Geobase (GRHQ)] (https://www.donneesquebec.ca/recherche/dataset/grhq) [Administrative divisions on a scale of 1/20,000 (SDA)] (https://www.donneesquebec.ca/recherche/fr/dataset/decoupages-administratifs) [Regional Coherent Hydro Digital Terrain Models (RTM)] (https://www.donneesquebec.ca/recherche/fr/dataset/modeles-numerique-de-terrain-hydro-coherents-a-l-echelle-regionale) [Quebec framework for buildings] (https://www.donneesquebec.ca/recherche/dataset/referentiel_bati) Topographic maps at a scale of 1/20,000 are the official cartographic base of the Government of Quebec. They cover almost all of the territory south of the 52nd parallel. The data is extracted from aerial photographs at a scale of 1:40,000 taken at an altitude of 6,300 meters.…

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