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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Drought event characteristics

Models:

Map data downloads

Stations (with metrics):

River flow stations
Groundwater level stations
Groundwater recharge stations

The drought characteristics assessed are:

Duration (number of months over which a drought occurs)
Maximum deficit (the largest magnitude anomaly below the threshold occurring in any month of a drought, expressed as an absolute value of cumecs (river flows) or SGI units (groundwater levels)
Total deficit (the accumulated sum of all absolute magnitude anomalies across all months of a drought).

The map shows the change in the selected drought characteristic 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.

You can toggle through the three drought characteristics and show outputs from each model.

By clicking a site on the map, a box plot is shown where you can view the drought characteristics compared to the observations over the above time slices.

You can toggle through the three drought characteristics and show outputs from each model. The plot gives the option to show each of the RCM-PPE members or remove some — the Portal redraws the plot appropriately.

Model runs: