Hydroclimatic Atlas 2022

#Données of the 2022 Hydroclimatic Atlas

#Description

The Hydroclimatic Atlas describes the current and future water regime in southern Quebec in order to support the implementation of water management practices that are resilient to climate change.
These data are from the most recent version of the [Hydroclimatic Atlas] (https://www.cehq.gouv.qc.ca/atlas-hydroclimatique).

#Nouveautés

• Improvement of the spatial resolution of the hydrographic network;
• Greater spatial coverage;
• Addition of the ClimeX and CORDEX-NA sets, in addition to the scenarios of the CMIP5 set;
• Use of six hydrological platforms;
• Addition of indicators, especially annual ones.
• Etc.

#Liste data available

• Link to the new Hydroclimatic Atlas website.
• Map of the 24,604 river sections from the Hydroclimatic Atlas with their attributes, available in GeoJSON and shapefile format. To facilitate download and display, the map is divided into 11 GeoJSON files: ABIT (Abitibi and Lac Abitibi region), CND west (North Shore A and B regions), CND east (North Shore regions C, D and E), GASP (North Shore regions C, D and E), GASP (Gaspésie), MONT (Gaspesie), MONT (Montégérie), OUTM (Outaouais Upstream), OUTV (Outaouais Downstream), OUTV (Outaouais Downstream), SAGU (Saguenay), SLNO (St-Laurent north-west), SLSO (St-Laurent south-west) and VAUD (Vaudreuil).
• The CSV tables (“Magnitude...”) for each of the 76 hydrological indicators describing the ampliture, direction and dispersion for RCP4.5 and RCP8.5, for the three future horizons (see the [documentation] (https://www.donneesquebec.ca/recherche/dataset/8bc217ff-d25d-4f55-a9a7-ada3df4b29a7/resource/086e3a6d-9e79-4aee-81c3-4b2343bf7996/download/metadonnees_atlas2022.pdf) for details).
• The CSV tables (“Projected Indicator...”) for each of the 76 hydrological indicators detailing the flow values with their uncertainty for the historical period and the three future horizons (RCP4.5 and 8.5). See the [documentation] (https://www.donneesquebec.ca/recherche/dataset/8bc217ff-d25d-4f55-a9a7-ada3df4b29a7/resource/086e3a6d-9e79-4aee-81c3-4b2343bf7996/download/metadonnees_atlas2022.pdf) for more details.
• A [PDF] (https://www.donneesquebec.ca/recherche/dataset/8bc217ff-d25d-4f55-a9a7-ada3df4b29a7/resource/086e3a6d-9e79-4aee-81c3-4b2343bf7996/download/metadonnees_atlas2022.pdf) with metadata and a more detailed description of the data.

#Note

The [2018 version data] (https://www.donneesquebec.ca/recherche/dataset/atlas-hydroclimatique-2018) is archived on Data Québec for reference, for example for old reports or analyses referring to this version of the data. Any new study or analysis should use the most recent data available below or on the Atlas website.This third party metadata element was translated using an automated translation tool (Amazon Translate).

Organization: Government and Municipalities of Québec | Gouvernement et municipalités du Québec

Last modified: 2026-04-22T18:02:11.596736