Geography encompasses a wide area of study; each section deserving an entire volume to itself. The book associated with occurrences of flash floods in River Satluj flowing within in Himachal Pradesh. On account of geographical position, climate and geological setting Himachal Pradesh is the worst disaster affected state. To identification of vulnerable areas and assessment of their damages were analysis with most advanced and essential fields of geography, known as Geographic Information System (GIS) and Remote Sensing (RS). The book aims on make use of different applications of GIS and remote sensing for studying and understanding flash floods occurring in River Satluj. With the help of Remote Sensing and Geographical Information System, the classification and mapping of study area is analyzed. These analysis are systematically explained in text and accompanied by copious diagrams, maps, tables and charts