Simulation Modeling of a Regional Water System

Abstract

The relationship between rainfall and river discharge has been long established as an area of study in the field of hydrology. Regression models are commonly accepted and used in practice. Improvements in this basic relationship are possible by introducing co-variables such as soil moisture storage, ground water storage, etc. But universal application of the rainfall-runoff relationship is not possible as there are important exceptions. These include Karst regions and alluvial areas. The unit hydrograph is another approach, but it is also limited in scope for the same reason. The problem involves many interrelated variables of the hydrologic cycle which are not considered in the traditional models.