2. Flood Impact Analysis

But as a result what happened they can see that it makes the houses more vulnerable water can easily come to house and it is really risky for them.

The elevation of roads by the local government, intended to improve transportation, unintentionally resulted in making nearby houses more prone to flooding. As the roads were raised, water began to flow more freely towards the houses, increasing the risk of water damage during floods.

Think about a sloping driveway. If the driveway is higher than the surrounding lawn, rainwater will run off the driveway and into the yard or house. This elevation can create problems for homes near the driveway, similar to how elevated roads can increase flood risk for nearby houses.

There is also an encroachment by on Mithi river some people are encroaching, this is a Mithi river you can see that new constructions arouses.

Encroachment refers to the illegal construction of buildings or other structures on land that is not owned by the builders, in this case, areas near the Mithi River. This can worsen flooding because it reduces the river's capacity to carry water effectively, leading to increased water levels during heavy rains.

Imagine trying to fit more water into a bottle that's already full. If people build near the river, they're taking up space that should be available for water to flow, similar to trying to overflow a filled bottle.

What we found that in 1980 it was a mangrove area totally on Mithi river, that is the road, and this is the Dharavi area, but it was actually a mangrove areas. In 1990 in the early 1990s or late 1980s some settlements have come especially the construction workers they started to build temporary houses.

Historically, the Mithi River area was covered with mangroves, which help to absorb and slow down floodwaters. However, in the late 1980s to early 1990s, humans began settling in that area, including construction workers building temporary structures. This transformation reduces the natural defenses against flooding.

Think of mangroves as nature's sponge. When you remove a sponge and replace it with concrete, any water that comes through will flood faster than when the sponge was there to absorb it. This illustrates how human settlement can exacerbate flooding.

The flood level in 2005 and these areas, the red mark areas close to the Mithi river, these areas were around six to ten feet of water.

During the 2005 flood, areas near the Mithi River experienced water levels of 6 to 10 feet, which is significantly more than a person’s height. This means that many houses and properties were severely affected, indicating the devastating impact of flooding in that region.

Imagine a person standing in a pool of water. If the water is only up to their ankles, they may not be affected much. But if it's up to their neck, they could be in serious trouble. The higher water levels during a flood can lead to much greater risks for homes and families.

In waterlogging, they were facing annual waterlogging in these series, and you can see here that most of the building most of the houses they face this one to two feet waterlogging annually.

Annual waterlogging refers to the recurring problem of water accumulating in certain areas after heavy rainfall. Many buildings in this region experience 1 to 2 feet of standing water each year, which can damage property and disrupt daily life.

Think about leaving a glass of water outside during a rainstorm. If it rains a lot, the glass may fill up and overflow. Similarly, in areas prone to waterlogging, rain accumulates to the point where it can't drain away quickly enough, damaging homes like the spilled glass.

The damage to building and damage to household, durable asset due to 2005 flood you can see those houses which are close to the Mahim Creek or Mithi river they were the most affected households by they had total damage.

The 2005 flood resulted in extensive damage, particularly to households close to the Mahim Creek and Mithi River. Many residents experienced complete loss of property, including essential belongings and structural integrity of their homes.

This is like a family losing everything in a house fire. Just as possessions may be destroyed or uninhabitable due to fire damage, homes close to flooding rivers can be equally devastated by water damage.

So after we finish this exercise of connecting many more mappings and all we ask people that hey please mark us that what how you involved into this project of risk mapping, was it successful or not.

The community’s involvement in the risk mapping project was evaluated to assess how engaged and successful the process was. Feedback was gathered to ensure that stakeholders felt represented and their concerns were addressed.

Similar to a group project in school, when everyone contributes ideas, it leads to a more successful outcome. When community members participate in such projects, their input helps shape effective flood management strategies.

We started to develop an action plan for reconstruction, and rehabilitation, response, and relief of this area.

Following the evaluation of the community's involvement, action plans were created to address future flooding. These plans outlined how to improve rescue operations and prepare for rehabilitation, ensuring that residents were better equipped to handle flood risks moving forward.

Imagine a teacher developing new classroom rules after realizing that certain behaviors disrupt learning. Similarly, creating a flood response plan helps ensure the community can cope better with future floods.

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