Numerous metropolitan regions in India face flooding and water stagnation-related issues during the rainy season. However, different urban communities are in different geographical and meteorological settings, and the causes of flooding are often similar established in where we manufacture or grow, our urban areas, and how we develop streets, structures, and various designs.
Beachfront urban communities, similar to Mumbai and Chennai, are additionally helpless against storm floods and other ocean level-related difficulties, for example, ocean water entering (during elevated tide) to influence the release limit of the city’s tempest water channels. If we should pursue arrangements, it is fundamental as far as we’re concerned to have a more profound understanding of the development examples of our urban communities, their landscape, their foundation, and their biological systems.
Allow us to take the instance of Bengaluru, which has been seriously impacted by floods this year. Bengaluru is situated at the highest point of an edge, which is the water split between the watersheds of the Kaveri and the Ponnaiyar (Dakshina Pinakini) streams. The city has various valleys which go about as channels conveying water to these two significant streams. Unique settlements were focused on the edges while the valleys were utilised for farming. To flood this terrain, bunds were raised to hold the water — making lakes. Every lake had its own region which it flooded.
The more established streams that once streamed were upgraded to make fake trenches (kaluve) which were utilized for the water system of the border region of every lake and for conveying overabundance of water downstream. A few minor depletes that conveyed water in these order regions wound up under confidential proprietorship. The city’s populace, which remained at 1.6 lakh in 1901, is assessed to be more than one crore today. This fast and outrageous development has set off a gigantic interest for land and the city started rambling out. Disregarding the geology of the land, development started in the valleys and edges, which thus changed the first geography, with minor channels vanishing.
The new designs affected water penetration into the dirt as well as started impeding the development of water in the valleys. The vast majority of the channels on confidential properties vanished, while public property channels demonstrated an inadequate ability to convey water during weighty precipitation days. These current channels, which were not made for immersion necessities, demonstrated a lack of errand in the errand of conveying an abundance of water. Outrageous measures of design, sewage flow, and obstructing also hampered flow in the channels.
The greater part of the flooding and stagnation in Bengaluru happened in light of the deterrents in the valleys. There were not many cases of flooding outside the valley. The disengaged instances of stagnation in the edges were to a great extent because of the nature of designing the side of the road stormwater channels.
