Identification

Title

Gridded flood frequency estimates for Kerala, India

Abstract

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) Full details about this dataset can be found at https://doi.org/10.5285/cba9f9db-4706-4f1e-aaf4-fd7769e00db0

Resource type

dataset

Resource locator

https://data-package.ceh.ac.uk/data/cba9f9db-4706-4f1e-aaf4-fd7769e00db0

name: Download the data

description: Download a copy of this data

function: download

https://data-package.ceh.ac.uk/sd/cba9f9db-4706-4f1e-aaf4-fd7769e00db0.zip

name: Supporting information

description: Supporting information available to assist in re-use of this dataset

function: information

Unique resource identifier

code

https://catalogue.ceh.ac.uk/id/cba9f9db-4706-4f1e-aaf4-fd7769e00db0

codeSpace

doi:

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

inlandWaters

Keywords

Keyword set

keyword value

Flood frequency

Land Air Water International Science

LAWIS

Peak daily river flow

lasso (least absolute shrinkage and selection operator)

HydroSHEDS

UN FAO Harmonised World Soil Database

lmomRFA

QMED

Geographic location

West bounding longitude

74.9

East bounding longitude

77.37

North bounding latitude

12.8

South bounding latitude

8.31

Temporal reference

Temporal extent

Begin position

End position

Dataset reference date

date type

publication

effective date

2022-07-26

Frequency of update

Quality and validity

Lineage

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.

Conformity

Conformity report

specification

title

Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

custodian

Metadata on metadata

Metadata point of contact

organisation name

Environmental Information Data Centre

full postal address

Lancaster Environment Centre, Library Avenue, Bailrigg

Lancaster

LA1 4AP

email address

info@eidc.ac.uk

responsible party role

pointOfContact

Metadata date

2022-11-01T10:49:36

Metadata language

eng