ABSTRACT
Water resources management is essentially a linkage between availability from various sources and sectoral demand in which both quality and quantity need to be considered, and where both conservation and control measures need to be addressed. Conjunctive use of surface and ground water is an integral part of water resources management. Both remote sensing and ground measurements have to be integrated to provide an overview of large area as well as details of local availability. Conventional hydrologic measurements on the ground suffer from the limitations of reliability, time effectiveness and adequacy. These measurements are also discrete in space, necessitating areal averaging methods. Repetitive ground measurements many times are scarce due to the constraints of manpower and funds. Measurements over inaccessible areas and inhospitable terrain are also a limitation. It is in this context that remote sensing technique can complement and supplement ground measurements, to enable collection of data needed for sound water resources management.
