Inconsistent using FLOOD and Flooding Development of EPA SWMM for Assessing Flood Occurrences in Vulnerable Urban Watershed Considering Extreme Rainfall Events
Abstract
Urban flood, commonly known as urban water congestion, is a type of water hazard that poses significant challenges for urban residents and water management experts. Chittagong, an essential economic hub in Bangladesh, renowned for its role as a port city, comprises a diverse range of land use, including residential, industrial, and commercial sectors. The Chaktai canal, an important element of Chittagong drainage system, is connected to the Karnaphuli river, playing a vital role in managing drainage by handling a substantial portion of the city water. Therefore, this research evaluated the operational efficiency of a specific drainage network under the influence of altered rainfall events using the Storm Water Management Model (SWMM). Using ArcGIS 10.4, the land use pattern of the area was researched, incorporating data from field surveys and secondary sources. SWMM 5.1 integrated watershed data, and further simulation was carried out to estimate runoff in various sub-catchments and drainage network limitations during heavy rain. During the intense monsoon period, the tool determined the average runoff depth, considering backwater effects and robust tidal surges, resulting in a depth of 3.3m compared to 2.6m in the dry season. This research evaluated the influence of impervious land use changes on urban drainage systems. While meteorological factors alone render drainage network sufficient in dry periods, the outfall shows vulnerability during the rainy season, with an allowance of only 0.7m, jeopardizing the catchment through flood. It contributed a schematic sub-catchment representation, emphasizing that flood events depend on volume runoff and peak flow in urban drainage system. SWMM model was used to illustrate the catchment surface runoff and interconnected node depths via conduits, as well as the current catchment scenario comprehensively.
References
Abbasizadeh, H., Nazif, S., Hosseini, S. A. and Tavakolifar, H. (2018), âDevelopment of a coupled model for simulation of urban drainage process based on cellular automata approachâ, Irrigation and Drainage 67(2), 269â281. URL: https://doi.org/10.1002/ird.2186
Ahmed, A. U. (2017), âBangladesh climate change impacts and vuâ, Climate Change Cell, Department of Environment.
Alam, S. (2022), Performance assesment of Chaktai Khal as urban drainage system under changed hygrologic and climate conditions, in â6th International Conference on Advances in Civil Engineeringâ, Chittagong University of Engineering & Technology, Chittagong.
Arnbjerg-Nielsen, K., Willems, P., Olsson, J., Beecham, S., Pathirana, A., BĂŒlow Gregersen, I., Madsen, H. and Nguyen, V.-T.-V. (2013), âImpacts of climate change on rainfall extremes and urban drainage systems: A reviewâ, Water Science and Technology 68(1), 16â28. URL: https://doi.org/10.2166/wst.2013.251
BMD (2017), âBangladesh Meteorological Departmentâ. [Accessed 4 September 2023]. URL: http://www.bmd.gov.bd/
Chowdhury, R. (2017), âCtg canals on their deathbed, 12 have vanishedâ. [Accessed 4 September 2023].
Coles, S. (2001), An Introduction to Statistical Modeling of Extreme Values, Springer London, London. URL: https://doi.org/10.1007/978-1-4471-3675-0
Engel, B., Storm, D., White, M., Arnold, J. and Arabi, M. (2007), âA hydrologic/water quality model applicationâ, JAWRA Journal of the American Water Resources Association 43(5), 1223â1236. URL: https://doi.org/10.1111/j.17521688.2007.00105.x
IPCC (2007), Climate Change 2007: The Physical Science Basis: Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press.
Islam, R. and Das, S. (2014), âAssessment of waterlogging and landslide vulnerability using cvat tool in Chittagong City corporation area multi hazard risk and vulnerability assessment, modeling and mapping (mrvam) view project pioneering numerical social-space prediction toward revolutionary changes in society view projectâ. URL: https://doi.org/10.13140/RG.2.2.14575.94885
Kim, H.-D., Kim, J.-T., Nam, W.-H., Kim, S.-J., Choi, J.-Y. and Koh, B.-S. (2016), âIrrigation canal network flow analysis by a hydraulic modelâ, Irrigation and Drainage 65, 57â65. URL: https://doi.org/10.1002/ird.1992
Kleidorfer, M., Mikovits, C., Jasper-Tönnies, A., Huttenlau, M., Einfalt, T. and Rauch, W. (2014), âImpact of a changing environment on drainage system performanceâ, Procedia Engineering 70, 943â950. URL: https://doi.org/10.1016/j.proeng.2014.02.105
Lu, W. and Qin, X. (2020), âIntegrated framework for assessing climate change impact on extreme rainfall and the urban drainage systemâ, Hydrology Research 51(1), 77â89. URL: https://doi.org/10.2166/nh.2019.233
Luan, Q., Fu, X., Song, C., Wang, H., Liu, J. and Wang, Y. (2017), âRunoff effect evaluation of lid through swmm in typical mountainous, lowlying urban areas: A case study in Chinaâ, Water 9(6), 439. URL: https://doi.org/10.3390/w9060439
Mahmood, F. and Matin, M. (2018), âAssessment of drainage capacity of Chaktai and Rajakhali Khal in Chittagong City and inundation adjacent of urban areasâ.
Mia, M., Nasrin, S., Zhang, M. and Rasiah, R. (2015), âChittagong, Bangladeshâ, Cities 48, 31â41. URL: https://doi.org/10.1016/j.cities.2015.05.011
Patowary, S., Hazarika, J., Sarma, A. and Asce, M. (2018), âPotential impact of climate change on rainfall extremes for urban drainage managementâ. URL: https://doi.org/10.1061/9780784482025.027
Rasel, M. M. and Chowdhury, M. T. U. (2015), âModeling rainfall intensity duration frequency (r-idf) relationship for seven divisions of Bangladeshâ.
Schwab, G. O., Frevert, R. K., Edminster, T. W. and Barnes, K. K. (1982), Soil and water conservation engineering, Vol. 134, LWW. URL: http://doi.org/10.4236/ojg.2016.68053
Tashmin, N., Muniruzzaman, M., Islam, S., Farzana, S. and Naher, S. (2018), âChallenges of local coping capacities due to climate change in the coastal regions of Bangladeshâ, Journal of Geoscience and Environment Protection 06(08), 66â86. URL: https://doi.org/10.4236/gep.2018.68007
Terwisscha van Scheltinga (2015), Recent changes in temperature and rainfall trends and variability over Bangladesh, in âRecent changes in temperature and rainfall trends and variability over Bangladeshâ, Gobeshona Conference on research on climate change in Bangladesh, Dhaka, pp. 24â24.
Thompson, D. (2018), âAssessment of flood causes and provision of control measures to prevent its effectsâ. URL: https://doi.org/10.3390/ijgi4031265
Wang, K.-H. and Altunkaynak, A. (2012), âComparative case study of rainfall-runoff modeling between swmm and fuzzy logic approachâ, Journal of Hydrologic Engineering 17(2), 283â291. URL: https://doi.org/10.1061/(ASCE)HE.19435584.0000419
Wernstedt, K. and Carlet, F. (2014), âClimate change, urban development, and storm water: Perspectives from the fieldâ, Journal of Water Resources Planning and Management 140(4), 543â552. URL: https://doi.org/10.1061/(ASCE)WR.19435452.0000308
Willems et al. (2012a), âClimate change impact assessment on urban rainfall extremes and urban drainage: Methods and shortcomingsâ, Atmospheric Research 103, 106â118. URL: https://doi.org/10.1016/j.atmosres.2011.04.003
Willems et al. (2012b), Impacts of Climate Change on Rainfall Extremes and Urban Drainage Systems, IWA Publishing.
Willems, P., Olsson, J., Arnbjerg-Nielsen, K., Beecham, S., Pathirana, A., BĂŒlow Gregersen, I., Madsen, H. and Nguyen, V. (2012), Limitations and pitfalls of climate change impact analysis on uurban rainfall extremes.
Xiong, L., Yan, L., Du, T., Yan, P., Li, L. and Xu, W. (2019), âImpacts of climate change on urban extreme rainfall and drainage infrastructure performance: A case study in Wuhan City, Chinaâ, Irrigation and Drainage 68(2), 152â164. URL: https://doi.org/10.1002/ird.2316
Yan, L. (2014), âAnalysis of storm runoff simulation in typical urban region of Wuhan based on swmmâ, Journal of Water Resources Research 03(03), 216â228. URL: https://doi.org/10.12677/JWRR.2014.33028
Zhang, H., Yang, Z., Cai, Y., Qiu, J. and Huang, B. (2021), âImpacts of climate change on urban drainage systems by future short-duration design rainstormsâ, Water (Switzerland) 13(19). URL: https://doi.org/10.3390/w13192718
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