Gridded flood frequency estimates for Kerala, India

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

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https://doi.org/10.5285/cba9f9db-4706-4f1e-aaf4-fd7769e00db0

This is a set of six ASCII grids describing the peak flood event for six return periods (2-100 years) at each point of the river network in the state of Kerala, India. Estimates were derived in a similar way to the Flood Estimation Handbook* approach. The data is measured in cubic metres per second, and is given on an unprojected resolution of 15 arc-seconds per grid cell.

This work was supported by the Natural Environment Research Council as part of the LAWIS programme delivering National Capability.

* (Flood Estimation Handbook. Centre for Ecology & Hydrology, 1999, ISBN: 9781906698003)

Publication date: 2022-07-26

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View numbers valid from 01 June 2023 Download numbers valid from 20 June 2024 (information prior to this was not collected)

Format

ASCII grid

Spatial information

Study area

Spatial representation type

Raster

Spatial reference system

WGS 84

Provenance & quality

Hydrological flow records were used from the CWC to extract an annual maxima series from 2000-2020 across the state. Catchment descriptors from HydroSHEDS, UN FAO Harmonised World Soil Database, and IMD rainfall products were used to estimate the 2-year flood at ungauged sites. Top-kriging was used to interpolate this to over 300 sites covering the state. Then a regional GEV growth curve was fitted to get other return periods of peak flow.

Licensing and constraints

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

Cite this dataset as:

Griffin, A.; Vesuviano, G.; Cole, S. (2022). Gridded flood frequency estimates for Kerala, India. NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/cba9f9db-4706-4f1e-aaf4-fd7769e00db0

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