Open AccessFlood modelling and breach analysis of karuvannur river in kerala state
Author(s) -
A Anupriya,
T Reeba,
R Anoop
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1114/1/012027
Subject(s) - flood myth , hydrology (agriculture) , levee , damages , environmental science , 100 year flood , floodplain , bank , streamflow , water resource management , geography , geology , drainage basin , geotechnical engineering , cartography , archaeology , political science , law
India is one among the countries around the world, where continuous variations in climate and rainfall amount causes severe economic damages and threat to human lives. High amount of rainfall causes drastic changes in the normal flow of a river and leads to heavy flood. During the catastrophic flood occurred in the year 2018, Karuvannur River overflowed and collapsed the bund road connecting Arattupuzha and Karuvannur. It had deviated from its original course and subsequently the low lying areas near the river were completely flooded. This incident indicates the need for conducting hydrologic and hydraulic analysis of Karuvannur River for adopting an effective river management plan to prevent the future flood events. In this study, hydrologic analysis is done using HEC-HMS model and hydraulic modelling is done using HEC-RAS model. From the analysis, the maximum flow, velocity and shear stresses on the banks of river are determined. Flood mapping is also done. As per the results of flood modelling, construction of a levee on the river bank is proposed to avoid overflow and diversion of flow hereafter.