Water Systems
Watersheds, groundwater dynamics, and hydrological modelling for water resource management and flood risk assessment.
Watersheds
A watershed (catchment or drainage basin) is the area of land where all surface water converges to a single outlet point. Watershed delineation uses DEM-derived flow direction and flow accumulation grids. Understanding watershed boundaries is fundamental for water resource management, flood risk assessment, and pollution source tracking.
Key Topics
Groundwater
Groundwater accounts for ~30% of global freshwater. Aquifer characterisation, recharge estimation, and sustainable yield assessment are critical for water security. Remote sensing (GRACE gravity data), geophysical surveys, and numerical groundwater models (MODFLOW) support groundwater management.
Key Topics
Hydrology
The study of water movement through the Earth system: precipitation, evapotranspiration, infiltration, runoff, and streamflow. Hydrological models (HEC-HMS, SWAT, VIC) simulate the water cycle for flood forecasting, drought prediction, and infrastructure design.
Key Topics
Under Development: Interactive watershed delineation tool, groundwater recharge calculators, and flood return period analysis are planned.