This module focuses primarily on the physical (hydrodynamic, sedimentary and morphological) processes and phenomena that determine the nature of lakes, rivers and estuaries. It also explores their chemical (water quality) and biological (ecological health) characteristics and how these aspects are related. The module is centred on three pieces of written work on current topics in the research literature, and practical sessions in which data sets from each type of waterbody are investigated in order to understand how the underlying processes manifest themselves in real data. The learning gained in the practical sessions is assessed via a computer-based exam at the end of the module in which you are presented with data sets similar to those used in the practical sessions and asked to interpret them. Learning for both elements of the assessed work is supported via a series of eighteen lectures.