According to the National Center for Hydro-Meteorological Forecasting, the rainfall on October 14 in Da Nang City is from 400 to 700 mm, of which the heaviest rainfall in 6 hours is up to 567.8 mm (from 15 to 21 hours). October 14th).
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Da Nang city was heavily flooded in the historic rain 14.10 |
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Many authorities agree that, with a large amount of rain, concentrated in a short time like the past, no drainage system can bear it, because Da Nang’s drainage system can only handle 100-200 mm of rain. .
Remember, at many meetings of the People’s Council, voters have also reflected that the biggest worry in the rainy season in Da Nang is urban flooding, which is subjectively caused by dredging of sewers, especially sewers. in unsatisfactory alleyways.
In addition, many people, especially households or businesses, shops on the sidewalk, have manholes in front, often arbitrarily seal the water inlet to avoid the smell. So when it rains heavily, the water does not drain in time.
As a result, many pumping stations that operate for a short period of time do not have water to pump, but the water on the road surface is still flooded due to limited outlet.
In addition, pumping stations when heavy storms, heavy rains cause flooding, affecting the power system are not effective, especially underpasses are now heavily flooded, the pumping station is also paralyzed.
Remember at the end of June 2022, at the meeting to implement disaster response in 2022, the above issues were raised.
At that time, the leaders of Da Nang City drastically cut off the reports with available documents, asking for specific forecasts on the time, intensity of natural disasters, warnings and responses, and scenarios.
The problems of pumping stations, dredging, and water inlets have been set out before, but in the historic rain on October 14, they have not been applied, especially early warning about rainfall, rain intensity, and drag time. The length of the historic rain is too short.
Looking back at the response to typhoon No. 4 (Hurricane Noru), the damage of Da Nang City was negligible, especially no loss of life, showing the initiative in early forecasting, continuous warning and relocation of people. has been effective.
Therefore, the city needs to have better adjustment and response scenarios to the abnormality of natural disasters. In particular, with plans prepared in the middle of the year, if there were earlier warnings, much damage could be minimized.
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