ANNOUNCEMENTS
Flooding has a large-scale impact on coastal cities, especially when heavy rainfall is coupled with high tides, the impact intensifies. Life comes to a standstill & the less fortunate suffer the grunt of loss of property, health & livelihood. This can last for few hours to couple of days. In most of the cases life derails for more than couple of days to recover, as the planning & development of infrastructure is not resilient enough.
Analysis of rainfall data provides IDF & Hyetograph plots which help in understanding pattern & peaks of rainfall trend. SWAT modeling provides the run-off through the river basin, through which peak run-off estimation using Gumbel analysis gives us an idea on the amount of discharge that can generate form storm events of different return periods.
With better preventive & protective infrastructure, flood effects can be mitigate & managed better. Restoring flood plains, improving & expanding drain line network, rejuvenating & creating urban ponds can very well help in minimizing & controlling floods. Artificial groundwater recharge pits & rainwater harvesting techniques must be implemented on public & private properties as per their extent.
Interventions to restore & conserve the mangroves & wetlands is crucial around the city. Inside the city limits construction of flood protection walls & riverfront development can help in keeping a check on low to moderate flood events.
It is important that sustainable measures are adopted across & outside the city limits to come up with a lasting resilient action plan.
Keywords: - IDF, Hyetograph, SWAT, Gumbel analysis, Resilient Action Plan.
