ABSTRACT
The geospatial information technology covers a wide range of topics, disciplines, subjects, and technological tools. These are concerned with surveying, Geographical Information Systems (GIS), Global Positioning Systems (GPS), Computer Aided Drafting (CAD), cartography, transportation management, construction management, water supply and sanitation, photogrammetry, remote sensing, terrain mapping and visualization, surface and groundwater resources management, urban and rural planning, coastal zone management, database management, software engineering, web technology, computer graphics, pattern recognition, expert systems, and image processing (Gregory and Walling, 1973; Pimentel, 1993; Burrough, 1998).
11.2 WATERSHED MANAGEMENT
