Abstract
Remote sensing (RS) and the geographical information system (GIS) have gained popularity as advanced water resources assessment, monitoring, and analysis tools. These technologies evaluate better the land surface resources and offer powerful means of detecting and analyzing temporal changes in our environment, which is required for a wide range of applications in the fields of hydrology, meteorology, and agronomy. This chapter gives insight into various RS and GIS applications in water resource management, including hydrological studies, drainage basin planning, flood zone management, drought assessment, irrigation management, and so on. By integrating and communicating the spatiotemporal databases at distinct locations, GISs have augmented the use of remotely sensed data. Global positioning system (GPS) has enabled accurate truth data collection for the effective use of ground-based RS data. Brief introductions of RS, GIS, and GPS with their adaptability to water resources management are discussed in the present chapter. The applications of various satellite imageries are also discussed with special attention on Indian RS satellites and how these tools will help plans for optimal utilization and management of water resources.
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