Water Models are comprehensive tools developed to simulate the behaviour of river systems under various conditions and scenarios. These models are essential for understanding and managing water resources, as they integrate a wide range of data inputs, including climate, hydrology, and human interventions. The following two categories of water models are available here:

• catchment models: catchment models, which focus on the natural hydrological processes within a catchment area;

• pre-development models: pre-development models, which simulate river systems before any water infrastructure or management practices were implemented.