Some Issues and Emerging Methods in the Modeling of Hydrologic Processes

Abstract

 In this article some fundamental issues in hydrologic modeling are discussed, and some emerging methods toward their solutions are presented. The issues discussed are i) the physically-based, distributed modeling of hydrologic processes in the face of climate change, ii) the coupled modeling of hydrologic and atmospheric processes in ungauged or sparsely-gauged watersheds, iii) modeling of hydrologic processes in the face of land heterogeneity, iv) estimation of the design flood for large structures under a changing future climate, and v) modeling uncertainty and long range dependence in hydrologic processes.