Abstract:
Planning and Execution of development activities in watersheds require assessing
possible development scenarios and estimating watershed behaviour under such
situations.
In this connection it is very important to understand the hydrological behaviour of a
watershed to satisfy water resources concerns. Mathematical watershed models
enable this testing of watershed development scenarios under different changing
situations either in the temporal or in the spatial scale.
As such this study as its primary objective includes the development of a conceptual
mathematical model for the Gin Ganga Watershed (Figure 1). The modeling effort is
based on a monthly time resolution. Monthly temporal scale is considered adequate
to identify the seasonal response of watersheds in cases of inputs for groundwater
models, irrigation reservoir operation planning, irrigation water requirement planning
etc. The monthly watershed model developed in this study is a lumped conceptual
model using a three-layer linear tank structure based on the Tank Model Concept
(Sugawara 1960).
