By Venu Kandiah, PhD, P.E., Senior Water Resources Engineer
The effort required to develop water resources engineering models can be significant. But once developed, in many instances the models are only evaluated for a limited, or a single set of conditions. The results and predictions obtained from these evaluations are the ones used in design, presented in reports and conveyed to decision makers and the public. This approach might serve the immediate needs of a project; however, for most modeling efforts a limited amount of additional effort can provide more knowledge and understanding at a low marginal cost to that required to develop the model itself.