The course will focus on the theory and analyses of practical free surface phenomena. The application of the basic theory of free surface flow, mass; energy and momentum conservation, will be demonstrated in the determination of flood lines, culvert sizing, bridge flow hydraulics and dam break analysis. The widely used and worldwide accepted HEC-RAS software package will be reviewed and demonstrated by performing two-dimensional (2D) hydraulic calculations for unsteady flow conditions as well as dam break analysis. Delegates will learn how to approach and construct a numerical 2D model for various flow conditions, and to effectively view and analyse results. A number of practical problems will be discussed and solved. This will provide participants with an enriched knowlegde of the functionalities, limitations and application options to utilize the software with confidence to conduct various flow simulations.