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This wiki is intended to provide guidance for people working on catchment modelling projects in South Africa. Catchment modelling entails a lot of decision-making, from how many land cover types to include in a model, to which modelling software tool to use for a project. We hope this site will assist people in making informed decisions in this process and contribute to ‘wise-use’ of modelling for the benefit of water resources management.

This wiki is living resource: the user community can suggest changes and updates and a moderator group will help incorporate these into the site.

The idea for this site came from a group of early-career hydrologists facing many tricky modelling decisions in their research and projects. The Water Research Commission (WRC) funded the initial development of the material through the “Critical catchment model inter-comparison and model use guidance development” project (2019-2021). This project included a review of the structures and use experience across several commonly used modelling tools in South Africa, overseen by an expert reference group.