ABSTRACT
There have been two significant advances, which need to be incorporated in water resources management methodologies. The first area of advance is conceptual – there is widespread recognition that it is only through synergy between the earth (including the atmospheric and oceanic realms), space and information sciences, is it possible to reduce the predictive uncertainty in hydrological sciences, and address the complex issues involved in themanagement of the four kinds ofwaters (rainwater, surfacewater, groundwater and soil water) and generate employment in the process of utilizing them. The second advance is in the area of tools – because of the advantages of repetitive coverage and capability for synoptic overview, satellite remote sensing has emerged as a powerful and cost-effective tool covering all aspects of water resources management.
