Applicability of the Synthetic Storage Function Model to a Reclaimed Upland Field

Abstract

The synthetic storage function model expressed by considering catchment geomorphological features is useful for engineering convenience. So the following formulae which have the coefficients depending on the land conditions are applied to a reclaimed upland field in order to examine the applicability of the model.
P=0.6, K=βA^0.14, T_e=γA0.14γ_e^-0.4where A is the watershed area (km²), γ_e is the rainfall excess (mm/h), K and P are the parameter (mm-h), T_e is the time lag between rainfall excess and flood runoff discharge and both β and γ are the coefficients depending on the land conditions.
Firstly the characteristics of the parameter P is confirmed by examining the values obtained by applying a mathematical optimization technique.
Nextly the usefulness of the applicability of the synthetic storage function model to a reclaimed upland field is verified by examing a difference between the parameters obtained by using the above-mentioned formulae and the identified parameters, and through comparisons between observed and simulated hydrographs.