5.2. Challenges in Evacuating the Area

Here is the level of people different kind of stakeholders starting from our GCOE that is global centre of excellence, human security engineering of Kyoto university team and Local community members and municipal corporations Greater Mumbai especially the involvement of the G-North wards, like we help them in mapping and I say, we also work as the surveyors, and explaining and introducing community the role and objective of the survey.

In this section, we discuss the various stakeholders involved in the evacuating process. The Global Centre of Excellence (GCOE) and the Human Security Engineering team from Kyoto University collaborated with local community members and municipal corporations, particularly in the G-North wards of Greater Mumbai. They assisted in surveying the area, which included mapping and explaining their roles to the community. This highlights the importance of collaboration among different groups in understanding evacuation challenges.

Think of a neighborhood where different groups - like school teachers, parents, and local government - come together to prepare for a school event. Each group contributes knowledge and support to make the event successful, just as various stakeholders work together to tackle the challenges of evacuating an area.

We collected a lot of data there starting from land-use data, residential, commercial, public, playground, infrastructure what are the infrastructures are there, Doctors clinic, community toilet, community taps, school.

Data collection is critical for effective evacuation planning. The team gathered various types of data, including land-use information—like why areas are used for residential, commercial, or public purposes. They also recorded important infrastructures, such as medical facilities, community toilets, taps, and schools. This understanding of the community's layout is essential for planning safe evacuation routes and identifying resources available to residents during emergencies.

Imagine planning a community picnic. To choose the best location, you would assess the area for various facilities, like restrooms and shade. Similarly, when planning for evacuations, understanding the local infrastructure allows for better decisions on how and where to evacuate individuals safely.

Hazard parameters we considered, flood duration, water level during the flood, areas frequently affected, building height, building materials, building conditions, plinth level these all we collected.

The understanding of potential hazards is vital for evacuation planning. Factors considered include flood duration (how long areas are flooded), water levels during floods, frequently affected areas, building height, materials used in construction, and overall building conditions. This data helps predict which areas are more vulnerable during floods and informs responses to maximize safety during emergencies.

Consider a person preparing for a storm. They would check the storm's expected duration, the likelihood of power outages, and how their home is built to withstand strong winds. In the same way, identifying potential hazards before flooding can help communities prepare and respond effectively.

Now here are some of the facts that in 2006 after 2006 lot of residential areas this is actually a road this is one of the fraction of the Rajiv Gandhi Nagar, many are transferred into commercial areas.

The transformation of residential areas into commercial spaces poses additional challenges for evacuation. In Rajiv Gandhi Nagar, many homes have been replaced by businesses since 2006. This change can complicate evacuation plans, as the increase in population and business activities during emergencies may result in more significant congestion and difficulties for residents trying to leave the area quickly.

Imagine a neighborhood that used to be quiet and primarily residential suddenly becoming a bustling shopping district. During an emergency, the increased number of people can make it harder for residents to evacuate safely, just like a crowded shopping mall can be challenging to exit during a fire alarm.

People started to build G+1 structure in though this is not allowed, but community allowed that community reported that many people are now constructing G+1 structure in Rajiv Gandhi Nagar okay.

Construction of unauthorized multi-story buildings, such as G+1 structures (ground floor plus one), can significantly affect evacuation responses. Although this construction is not officially permitted, community practices have led to new challenges during emergencies, including increased risk during flooding and inadequate structural integrity to withstand such incidents.

Think of building a treehouse without considering the strength of the tree. Just as it may risk falling during a storm, unauthorized multi-story buildings can collapse or hinder safe movement, complicating evacuation efforts in times of crisis.

And the roads are zig-zagged, so when these roads are filled by water and then during the flood or inundations that you cannot step in we do not know where you are putting your leg okay.

Zig-zagging and narrow roads can create significant challenges during evacuation because they may become impassable due to flooding. Residents might find it difficult to navigate their way to safety when visibility is poor, or when water covers the roads, making it impossible to identify where to step safely.

Imagine trying to find your way through a winding path in a dark forest after heavy rain. Just like navigating that path becomes tough with water covering the ground and poor visibility, evacuating through obstructed roads during a flood can be equally dangerous and confusing.

So in 2005 it was a Mithi river, and this is the road, and the flood came like this okay gradually and then it was around 8. So people could not evacuate during 2005 one reason that there was no designated place there was no early warning and the head of the household was not at house.

The Mithi River's flood in 2005 serves as a case study for understanding evacuation failures. Without designated evacuation locations and early warning systems, residents struggled to evacuate. Furthermore, many households lacked leadership from heads of households during the crisis, leading to delays in decision-making and action.

Consider a family trying to leave their house during a fire without knowing where to go. If there are no clear evacuation routes and no one is home to guide them, they might hesitate or panic. Similarly, a lack of planning and preparedness during the flooding led to many residents being unable to evacuate safely.

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