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Leeming, K.A.; Bloomfield, J.P.

Exponential parameters fitted to Delayed Flow Indices curves calculated for GB catchments, 1970-2015

https://doi.org/10.5285/d1df0a31-d329-4b21-8aa0-ba135d6a8042
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This dataset is available under the terms of the Open Government Licence

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This dataset contains exponential parameters from fitting an exponential curve to Delayed Flow Index (DFI or Characteristic Delay) curves using river discharge data from CAMELS-GB (Catchment attributes and hydro-meteorological timeseries for 671 catchments across Great Britain). The DFI curve at each catchment describes the response to rainfall over different time windows. The exponential parameters summarise the shape of the DFI curve at each site.
Publication date: 2025-09-12
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More information

View numbers valid from 12 September 2025 Download numbers valid from 12 September 2025 (information prior to this was not collected)

Format

Comma-separated values (CSV)

Spatial information

Study area
Spatial representation type
Tabular (text)
Spatial reference system
OSGB 1936 / British National Grid

Temporal information

Temporal extent
1970-01-01    to    2015-12-31

Provenance & quality

This dataset is generated using the CAMELS-GB dataset (https://doi.org/10.5285/8344e4f3-d2ea-44f5-8afa-86d2987543a9) with two main steps: calculating the Delayed Flow Index for each catchment, then fitting an exponential curve with three parameters (a, b, c) to these values.

One catchment (39036) did not achieve convergence so has NA values for the a, b, c parameters.
The a, b, c parameters are saved rounded to three decimal places.

Licensing and constraints

This dataset is available under the terms of the Open Government Licence

Cite this dataset as:
Leeming, K.A.; Bloomfield, J.P. (2025). Exponential parameters fitted to Delayed Flow Indices curves calculated for GB catchments, 1970-2015. NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/d1df0a31-d329-4b21-8aa0-ba135d6a8042

Correspondence/contact details

Kathryn Leeming
British Geological Survey
 kle@bgs.ac.uk

Authors

Leeming, K.A.
British Geological Survey
Bloomfield, J.P.
British Geological Survey

Other contacts

Rights holder
British Geological Survey
Custodian
NERC EDS Environmental Information Data Centre
 info@eidc.ac.uk
Publisher
NERC EDS Environmental Information Data Centre
 info@eidc.ac.uk

Additional metadata

Topic categories
geoscientificInformation
INSPIRE theme
Hydrography
Keywords
hydrology , Hydrology , stream flow
Funding
Natural Environment Research Council Award: NE/X002470/1