Water attenuation
Compare predicted water storage with your catchment's attenuation target.
Natural flood management
Initial Catchment
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User manual
Initial Catchment
Assessment Tool
Turn your mapped features into a clearer catchment assessment. Import ArcGIS data or draw features on your catchment map to explore water attenuation, biodiversity benefits, funding options and indicative costs.
Getting started
From features to assessment
Three stages to bring your catchment into focus.
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Create your catchment
Sign in, add a catchment and set its OS grid reference so the map opens in the right place.
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Add your features
Draw features on the catchment map, or import ArcGIS attribute tables exported to XLSX using the iCAT schema.
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Explore the results
Open the Catchment Report to compare metrics, inspect the calculations and explore funding options.
New to iCAT? The user manual walks you through the setup and your first assessment.
Your catchment report
What you can assess
The figures and working to support your initial site assessment.
Biodiversity net gain
Explore existing and proposed habitat units, and the estimated net gain.
Funding options
Review potential grant contributions, eligibility and excluded items for each funding source.
Indicative costs
Understand estimated construction costs and ongoing operational costs.