Professor Andrew Nicholas is an expert on river science and is Director of Research and Impact for Physical Geography. Andrew specialises in the study of river and floodplain processes, with a particular focus on hydrology (river hydraulics and flooding) and geomorphology (sediment transport, erosion and deposition, river migration, floodplain construction and alluvial deposits).

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Andrew's work has involved studies of both gravel-bed and sand-bed rivers in Europe, North and South America and South East Asia. His recent projects focus on the impacts on rivers of natural and human-induced environmental change (e.g., dam construction, sand-extraction, climate change). Methodologically, much of his work involves the development and application of numerical models, with a strong emphasis on the integration of theoretical and empirical approaches (using remote sensing and field measurements).