• Mohammad Nazrul Islam

The dwellers in Dhaka city have to face water-logging incidents almost every rainy season. Water-loggings have relations with various factors but heavy rainfall for climate change effects has become a major factor. This paper aims to find out the relations of water-loggings with the heavy rainfall in Dhaka city and the spatio-temporal distribution of water-logging incidents for heavy rainfall in the city. The data of water-logging incidents and the amount of rainfall caused the incidents since 1991 to 2021 were collected from at least two national daily newspapers of each day as well as daily total rainfall data (January 1991 to June 2021) and the three-hourly rainfall data (January 2003 to December 2021) were collected from Bangladesh Meteorological Department. The collected data were scrutinized and gathered as tables first and then analyzed by Microsoft Excel to represent in the paper. It is found that yearly water-logging incidents had predominance of positive correlations with annual rainfall most of the years since 1991 to 2021. It is also found that 46.67 percent water-logging incidents occurred for heavy rainfall. All of the severe and most of the major water-logging incidents occurred for heavy rainfall with previous consecutive rainfall day/days. The severity of water-logging is related with the intensity and duration of rainfall on the water-logging day and the amount of rainfall on the previous consecutive rainfall day/days. Although the water-logging incidents are distributed in many areas of the city, some areas have found highly water-logging prone than other areas. It is necessary to adapt the drainage system and the management with the heavy rainfall pattern and the distribution of water-logging incidents to reduce the effect.

Water-logging, distribution, heavy rainfall, consecutive, climate change, Dhaka City.

"Relations of Water-logging with Heavy Rainfall in Dhaka City (1991-2021)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 6, page no.f107-f117, June-2022, Available :http://www.jetir.org/papers/JETIR2206515.pdf

"Relations of Water-logging with Heavy Rainfall in Dhaka City (1991-2021)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 6, page no. ppf107-f117, June-2022, Available at : http://www.jetir.org/papers/JETIR2206515.pdf