2. STUDY AREA
Assam is a state located in India and has very undulated topography. The area of the state is 78,438 km2 and is divided into 33 numbers of districts. There are 28 number of rain gauges installed and maintained by meteorological department of Assam. These are the only means using which the precipitation is measured in the state. The undulated topography causes a difficulty in measuring the precipitation uniformly over the entire region. Assam receives a large amount of precipitation during monsoon period and it reaches to a maximum of 400mm. Hence, the measurement of precipitation becomes vital for calculation of runoff, and flood predictions.
Figure 1 Showing the geographical location of the study area and the rain gauges.
Precipitation data of 28 gauging stations ranging for 30 years (1988-2018) was taken from Regional Meteorological Centre, Guwahati. This data was utilised for making the prediction maps for the region.
3. MATHEDOLOGY