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A GIS - Remote Sensing compatible rainfall-surface runoff model for regional level planning
The model is a Windows based tool for data entry and data checking and running the overall catchment modeling steps. It is designed to overcome many of the significant hurdles faced by users, particularly the lack of user interface. The proposed model is rather a shell program operating in Microsoft Windows that accepts data input for the delivery of the output. The development environment for catchment model is Visual Basic Professional, version 6.0 operating under Microsoft Windows 98.The model follows the standard Windows single document interface (SDI) format common to many Windows programs and employs standard Windows controls (menus, frames, command buttons, radio buttons etc.) and dialogs, thereby providing the users with a familiar graphical user environment that will require a minimum of training. The GUI so far developed performs input, including import of data generated by Arc/Info GIS software, editing, management and execution of the project files. The GUI automates what was once a tedious manual process. Because Arc/Info and the model are mature and complex software systems, each with its own data structures and operating mechanisms, they were used in minimal or no modifications. Therefore the project comprising of a graphical user interface and an internal database, automates the communication between any GIS software and hydrologic model of advanced capabilities and this will allow hydrologists to fully explore the capabilities of the proposed catchment model and GIS and ultimately contribute to effective water resources management.
Model Application To demonstrate the application of he proposed model a model catchment has been selected along with assumed digital elevation data of some selected points (Table 1).  Table 1. Input table for the triangular network of model catchment |