Tank model. For the derivation of river discharge from rainfall.

Abstract

The tank model is very simple as shown in Fig. 1. We can consider that it corresponds to the zonal structure of groundwater as shown in Fig. 2. In spite of its simple outlook, the behaviour of the tank model is not so simple. Corresponding to various types of input rainfall, it shows various types of response as shown in Fig. 5 by its non-linear structure caused by the positions of side outlets which are set somewhat higher than the level of the bottom. The tank model shown in Fig.