International Research Journal of Engineering and Technology (IRJET) Volume: 09 Issue: 07 | July 2022
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e-ISSN: 2395-0056 p-ISSN: 2395-0072
ASSESSMENT OF TIDAL FOLLD VULNERABILITY OF PUTHENVELIKARA PANCHAYAT Shafna K J1, Akshay Murali2, Akhina Ravindran3, Meghna K R4, Sreelakshmi K J5 1Assistant
Professor SNMIMT Engineering College, Malianakara, Paravur, Kerala Student SNMIMT Engineering College, Malianakara, Paravur, Kerala --------------------------------------------------------------------------***---------------------------------------------------------------------Abstract 1,2,3,4,5 UG
Puthenvelikara is located in Ernakulam district of Kerala which is frequently a victim of the heavy rainfall and tidal flooding since it is surrounded by rivers like water bodies. Undoubtedly, saline water intrusion is an after effect of tidal flooding even if it badly attacked the region many times, not considered as disaster by the government. So the predominant focus of this study is to identify the most vulnerable part of the region by weighing all the negative impacts that happened there so far as well as to propose the mitigation measures on this considering all the factors.
Key words: Puthenvelikara, Tidal flooding, Water bodies, Saline water intrusion, Mitigation measures 1.INTRODUCTION On 16 August 2018, severe floods affected the south indian state kerala, due to unusually high rainfall during the monsoon season. Puthenvelikkara is an estuary situated in Ernakulam district of central kerala in india, which is occasionally affected by heavy rainfall and tidal flooding and is surrounded by water bodies such as rivers and lagoons. The panchayat is badly hit by saline water intrusions during tidal flooding as well though it has never been recognized by the government as a disaster. Tidal flooding is a problem that the people of puthenvelikkara have been facing for years. For the past three years this issue has reached its peak. The flood situation in puthenvelikara has worsened following the 2018 floods. Most severe flood event was also occurred in 2018, so that puthenvelikara panchayat has embarked on a detailed scientific survey for drawing up a disaster mitigation plan. Flooding or salt water intrusion has affected the drinking water, housing, agriculture, livelihood, transportation, social and cultural activities in that area. Greatly amplified flooding effects can be caused by normal rainfall and also petite surge storms. One passive solution to intrusion through drainage systems are one way back-flow Valves in drainage ways. However, while this may prevent a majority of the tidal intrusion, it also inhibits drainage during exceptionally high tides that shut the valves. While North paravur in general was badly affected in the floods, puthenvelikara being the confluent point of periyar and chalakudy rivers was among the worst hit. The main canals located in puthenvelikara are company canal, Akathuchal canal & Athirthi canal. Also flooding now occurs with high tides in many locations due to climate-related sea level rise, land subsidence, and the loss of natural barriers. Identification of the most critical portion of the panchayath as well as mitigation measures to narrow down the negative effect of tidal flooding are the predominant focus of the current study. 1.1 Objectives
To study the effect of natural and artificial barries at shore areas including mangrove forests, lagoons and tide gates.
To identify and analyze the geographical features of shorelines of puthenvelikara panchayat.
To prepare DEM of puthenvelikara panchayat
To analyze the effect of celestial bodies on tidal flooding in puthenvelikara panchayat.
To understand the necessity of proper watershed management in flooded area.
To identify the draw backs of unorganized coastal development and land use.
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