Flood Frequency Estimates for Kerala River Networks

Gridded flood frequency estimates for the state of Kerala, India, provide peak flood event data for six return periods from 2 to 100 years. Estimates were derived using a method similar to the Flood Estimation Handbook approach, with data measured in cubic metres per second at a 15 arc-second resolution. The work was supported by the Natural Environment Research Council's LAWIS programme.

Use Cases

• Model flood risk for infrastructure planning using peak flood event data for six return periods.
• Analyze spatial patterns of flood magnitude across Kerala's river network using the 15 arc-second gridded data.
• Calibrate hydrological models with cubic metres per second flow estimates derived from the Flood Estimation Handbook approach.

Strengths

• Data covers six distinct return periods (2, 5, 10, 20, 50, 100 years) for comprehensive frequency analysis.
• High spatial resolution of 15 arc-seconds per grid cell for detailed geographic assessment.
• Methodology is grounded in the established Flood Estimation Handbook approach.

Limitations

• Data is limited to the river network within the state of Kerala, India, and is not globally applicable.
• The ASCII grid format may require specialized GIS software for processing and visualization.
• Underlying model assumptions and input data quality may introduce uncertainty in the flood estimates.

Provenance

Source

Environmental Information Data Centre

Collection Method

Derived using a method similar to the Flood Estimation Handbook approach, supported by the Natural Environment Research Council's LAWIS programme.

Time Range

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Freshness

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Geography

River network within the state of Kerala, India.