Student exposure to runoff models must extend beyond theory and calculation to include application of models on real sites, discussion of model limitations as well as input data assumptions, and evaluation of model applicability to a given situation. A student in an introductory hydrology class may learn about a few of these models but can be left not knowing how they fit together as a set of tools and how to select which model to use in a given situation. Some models are simple enough that hand-calculations can be performed, while others require specialized software. These models vary widely in complexity, accuracy, data input requirements, and robustness. A multitude of models and methods are available to estimate runoff quantities from a watershed for the design and analysis of stormwater infrastructure.
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