ABSTRACT
This chapter presents applications of two alternative data sources for hydrological research. The first part is a review of satellite data application in surface water modelling, mapping and parameter estimation. The second part presents an example application of high resolution dredging data for flood modelling. Due to non-availability of measurement devices, inaccessibility of some terrains and limitations of space/time, hydrological data collection still remains a difficult task nowadays. In developed nations, efficient infrastructure of flood monitoring and management results in a wide range of high-cost modern data and methods such as high resolution terrain data and digital elevation models, cloud penetrating radar data which defines flood extents. A good alternative to overcome data scarcity is use of satellite remote sensing, which can give a synoptic view of target areas, measure target surface changes and therefore provide information needed for hydrological studies, river basin management, water hazard/ disaster monitoring/prevention and water management, etc.
