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Launch of the DRIAS-Water hydrological data portal!

Page mise à jour le 12/02/2024

One of the focuses of the LIFE Eau&Climat project is improving access to hydro-climatic data. Within this framework, Météo-France has designed the DRIAS-Water portal, which provides a set of hydrological data on future climate, based on the various IPCC scenarios, and makes it possible to visualise, using maps, the evolution of water resources as close as possible to the territories, in the short, medium and long term.

Météo-France has just launched the DRIAS-Water, the futures of water hydrological data portal, which is a variation of DRIAS, the futures of climate. Developed in one of the actions of the LIFE Eau&Climat project, "Improving access to hydroclimatic data", DRIAS-Water is fed by the results of the Explore2 research project led by INRAE and the International Office for Water. Météo-France has prepared a new set of climate projections and carried out hydrological modelling.

Access to DRIAS-Water

The data available on the portal:

  • the flow of rivers (on nearly 850 points on the metropolitan hydrographic network)
  • evapotranspiration
  • soil moisture 
  • the water equivalent of the snow cover (the stock of water potentially available at melting time)
  • drainage
  • runoff.

The maps and data are freely downloadable. The portal will be enriched by summer 2024 with data on groundwater and many other data on other points of the territory's waterways.

accueil DRIAS Eau
DRIAS-Water homepage

The portal includes:

  • A "guidance" section describing the principles of hydrological modelling, the different models used and the sources of uncertainty
  • A "discovery" section with a cartographic presentation of some results
  • A "data and products" section allowing free downloading of data and indicators.

DRIAS-Water fulfils the need for water managers to have easy access to hydrological simulation data on their basins in order to take climate change into account, particularly in the SAGEs. This portal can also be useful to local authorities, engineering offices and professionals involved in activities related to water management (agriculture, tourism, industry, energy, sanitation, network managers).

Several partners of the LIFE Eau&Climat project had the opportunity to test the DRIAS-Water demonstrator and to use the available data:

The EPTB Vienne has conducted a study on adaptation to climate change on the scale of the Vienne river basin for the periods 2030, 2050 and beyond, using data from the DRIAS-Water portal. The issues at stake in this basin concern the improvement of low water management in summer (determination of minimum flows, management of storage reservoirs), the securing of drinking water supply networks and the control of agricultural and industrial withdrawals. The EPTB Vienne plans a new SAGE for 2026, taking these lessons into account.

For more details :

SMEAG is conducting a diagnosis of the vulnerabilities to climate change of water uses and aquatic and wetland environments, on behalf of the CLE of the SAGE Vallée de la Garonne, and has mobilised the data of the DRIAS-Water portal for this purpose. This work responds to a request from the CLE to specify its adaptation approach, particularly given the erosion of the Garonne's flows already observed during the low-water period, in other words the period when the river is at its lowest level. The aim of this study is to mobilise the members of the CLE on the basis of updated knowledge of the weaknesses already identified by the Garonne2050 prospective study, carried out by the Water Agency in 2014, in order to prepare the most ambitious adaptation strategy to deal with them.

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More information on the LIFE Eau&Climat project:

The LIFE Eau&Climat project (LIFE19 GIC/FR/001259) has received funding from the European Union's LIFE programme.