1Research Scholar, Department of Geography and Disaster Management, Tripura University, Suryamaninagar-799022, Tripura, India. moujurigeo14@gmail.com
2Associate Professor and Head, Department of Geography and Disaster Management, Tripura University, Suryamaninagar-799022, Tripura, India
Online published on 14 November, 2017.
Flood is a common problem in West Tripura District where two rivers namely the Haora River and the Sonai Gang are flood affected. About 60% area and 55% people are affected by flood in the whole district. Monsoon rainfall, mainly intensity and duration of rainfall, is the main causative factor of flood. Therefore, this present study has been carried out to predict the flood hazard in West Tripura District for 50 and 100 years return period on the basis of the rainfall frequency curve analysis. For this frequency analysis Weibul's method has been applied. The annual rainfall data from the year 1971–2015 of the West Tripura District have been provided by the Department of Agriculture, Govt. of Tripura and Indian Council for Agricultural Research (ICAR), Lembucherra. Rainfall frequency curve shows that rainfall will be 390 mm and 410 mm or more on 50 and 100 years return period respectively which will increase the discharge of these two rivers and ultimately will cause devastating flood in this district. Therefore, proper flood hazard management is necessary through proper land use planning of the flood plains of these two rivers and through changing the cropping pattern.
Flood, West Tripura district, Intensity and duration of rainfall, Rainfall frequency analysis
