Welcome to the Enhanced Future Flows and Groundwater (eFLaG) Portal

This web tool can be used to explore the outputs from the eFLaG dataset. The data are set a nationally consistent climatological and hydrological projections for 200 river flow catchments, 588 groundwater bodies and 54 groundwater boreholes covering the UK up to 2080. There is more information about the dataset in the Earth System Science Data paper.

Please note that the files used in this portal are large in size, so we recommend you only view the portal over broadband/WiFi.

There are four views available to explore the data:

Drought event characteristics (Duration of drought, maximum deficit and total deficit)
Transient low flows / levels (projections of present and future river flows and groundwater levels)
Groundwater recharge (projections of changes in groundwater recharge)
Calibration / validation metrics (evaluation of model performance)

In almost all cases there is a summary of change between the following time periods shown on the map, with each site coloured up to show the percentage change or absolute change.

The time periods are:

Baseline (BL): 1989–2018 and Near Future (NF): 2020–2049
Baseline (BL): 1989–2018 and Far Future (FF): 2050–2079.

You can click on the site to bring up a plot to explore the projections in more detail.

All the data behind the portal is available to download from the EIDC data pages.

We would love to hear how useful this tool is for you. Please send feedback or questions to: enquiries@ceh.ac.uk

Drought event characteristics Transient low flows / levels Groundwater recharge Calibration / validation metrics

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Transient low flows/levels

Models:

Map data downloads

Stations (with metrics):

River flow stations
Groundwater level stations
Groundwater recharge stations

The transient projections of present and future river flows and groundwater levels are also available to view on the Portal. These have been expressed in flow (or level) percentiles:

Q90 / L90 (The flow in cubic metres per second or the level in m AOD which was equalled or exceeded for 90% of the record)
Q70 / L70
Q50 / L50
Q30 / L30 (The flow in cubic metres per second or the level in m AOD which was equalled or exceeded for 30% of the record)

The map shows the change in transient flows or levels which you can choose to express as absolute change or % change. You can view the change between the:

Baseline (BL): 1989–2018 and Near Future (NF): 2020–2049
Baseline (BL): 1989–2018 and Far Future (FF): 2050–2079

By clicking a site on the map, a plot is shown where you can view the 12 transient runs and the median. By changing the model and flow or level percentiles you can update the plot.

Model runs: