Development of Rainfall Intensity-Duration-Frequency Relationship And Isohyetal Map For Bangladesh

International Journal of Civil Engineering

© 2021 by SSRG - IJCE Journal

Volume 8 Issue 2

Year of Publication : 2021

Authors : Mohammed Alauddin, Rokshana Pervin, Farhana Mustari

10.14445/23488352/IJCE-V8I2P101

How to Cite?

Mohammed Alauddin, Rokshana Pervin, Farhana Mustari, "Development of Rainfall Intensity-Duration-Frequency Relationship And Isohyetal Map For Bangladesh," SSRG International Journal of Civil Engineering, vol. 8,  no. 2, pp. 1-6, 2021. Crossref, https://doi.org/10.14445/23488352/IJCE-V8I2P101

Abstract:

Waterlogging and floods are common problems in Bangladesh during the monsoon because of inadequate drainage with the increasing frequency of extreme rainfall. Rainfall data is important for the hydrologic design of any water resources projects to minimize water-related disasters. This study analyses the available rainfall data to develop an Intensity-Duration-Frequency (IDF) relationship for eight divisions of Bangladesh. The IDF relations show that Chittagong and Sylhet are the areas of high rainfall compared to other areas, and the lowest rainfall intensity is found in the Rajshahi region. Other areas like Dhaka, Barisal, Mymensingh, Khulna, and Rangpur have relatively less rainfall. Also, isohyetal maps are made for several durations of storms and for different return periods to extract rainfall data at any location of the country to help designing water resources projects.

Keywords:

IDF relationship, Isohyetal map, Rainfall

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