Here I share two software that allow modeling floods and based on this project the relief repositories and possible drains. I hope they serve you, best regards.

https://youtu.be/uNdvSJtX9yU

https://youtu.be/rK0zdeSprno

Some cities flood due the abundance of impermeable surfaces, roofs, compacted soils, etc. And the design of the city has open areas, where water could be transported, stored, used as wetlands, ponds, or possibly large more natural freshwater aquariums, etc. And permeable surfaces may infiltrate more water into soils. However, in cities with high building density including in the floodplain, with utilities embedded into the roads, a major reworking of the city might be needed. There May be opportunities to design in features to help better manage water or flooding, or retrofit structures by raising on piles, etc. Channelization and levees, dams, etc. as mentioned in Sponge City design can help, but best to have appropriate engineering and hydrology design, and even these best efforts can sometimes fail. Stream type, sediment sources, geology, flood zones, etc. need to be assessed. Urban areas within large basins would be more difficult as compared to smaller watersheds. I have mentioned before, especially in areas subject to cyclonic massive storms to consider using an envelop curve to plot the extreme flows of all gauging stations, and who is to know relative to climate change, whether this might be enough to address the potential for local severity. The practicality beyond the engineering, geology, geomorphology, hydrology, etc. also depends on costs and willingness of public to accept potentially some massive changes, and manage an urban area with more water, higher water table, potential for water quality issues, stability, etc. In the right circumstances, the Sponge City approach looks promising, but may not be the best approach for every circumstance, and that is why a review of conditions, limits, options May lead toward a properly funded and designed feasibility study.

The extraordinary storage of water in big dams causes many side effects to the sorounding environment in particular and the entire globe in general.

The flood is the natural phenomena due to the impact of the human interventions on structural changes on this earth.

The earth rotation is pulling down due to the big dams of some countries against the nature.

If something happens against the nature will teach big lessons to the human beings which is out of their thinking.

The nature is big one rather the man made establishments. When something created intellectually based on your objectives that will be nullified by the nature.

When the big catastrophes will happen then only the human brain will work more. All the human beings are trying their level best to sustain their life on this earth but no guarantee at all.

We will face the music if something will happen. America is preserving the environment and ecosystem over centuries but forests are used to burn by themselves which is out of human control. We have to think why it is happening because our calculations if we maintain these forest ecosystems that will save our life but that is not proper answer to have sustainable life.

It is something beyond out of the human beings that is nature. Nature teaches many lessons to the human beings. Still we are learners but we don't have adequate knowledge to limit our thinking to achieve our desires and dreams.

I am sure that the nature will win ultimately not human beings. We are trying our level best to get the benefits from this earth to satisfy our needs and wants but something beyond our control that is nature.

Hello, check on this paper

https://www.mdpi.com/2073-4441/10/8/1040/pdf