Optimasi Parameter Tank Model

Abstract

Tank Model is one of hydrological models to analize characteristics of river flow. The model can give information of water availability and be used to predict flood occurences. As it is commonplace, this model needs calibration, and it is usually done by setting the embodied parameters. In form of Standard Tank Model, the number of parameters accounts to 12. Many optimation methods have been recognized but so far there is no single method available for general application. This paper introduces an optimation technique to determine the parameters with taking into account conformity to water balance in addition to bestfitting. Here, two data from Cidanau and Terauchi Watershed were used for clarification, which show that this optimation technique gained fast and accurate results. This technique has been made available to use in form of an application software and openly possible to accommodate the other forms of Tank Model.