Authors

Nguyen Van Hong 1 , Nguyen Thao Hien 1*

Affiliations

1 Sub-Institute of Hydrology Meteorology and Climate Change; nguyenvanhong79@gmail.com; nthien2710@gmail.com

*Correspondence: nthien2710@gmail.com; Tel.: +84–934720858

Abstracts

Urbanization processes often lead to flooding issues, hindering the development of cities in Vietnam. For cities undergoing planning, initial solutions are crucial. To avoid replicating old urban structures, lacking green spaces, and missing water retention systems, this paper applies Low Impact Development (LID) solutions within the Storm Water Management Model (SWMM) framework for flood management in the new urban area along the Cai Nai River, located in the new residential area of Hung Thanh Ward, Cai Rang District, Can Tho City. The integration of SWMM with LID serves as a useful tool towards sustainable urban development, aiming for a more modern and intelligent city. This tool helps managers and investors save costs and time in selecting suitable solutions tailored to the planning characteristics of the study area, ensuring effectiveness during implementation. The paper proposes constructing two scenarios: current status and planned; comparing flow rates before and after urbanization for a major rainfall event on April 2, 2023. Subsequently, LID solutions are introduced and evaluated for effectiveness through each calculated scenario.

Keywords

Urban flooding; Cai Nai; Can Tho; SWMM; LID.

Cite this paper

Hong, N.V.; Hien, N.T. A study on the application of computational models as support tools in urban flood management along the Cai Nai river in Can Tho city. J. Hydro-Meteorol. 2024, 18, 79-91.

References

1. Technology Transfer Center, Southern Branch, Thuy Loi University. Project for Upgrading and Renovating the Bun Xang Regulating Lake - Can Tho City. 2015.

2. Hai, D.M. The effect of design storm characteristics on low-impact development practices for rainfall run off control. J. Water Resour. Environ. Eng. 2020, 68, 98–106.

3. Lan, N.T.M.; Dung, D.T.; Quang, C.N.X.; Giang, N.N.H. Assessing the applicability of sustainable urban drainage systems in Binh Chanh district, Ho Chi Minh city. J. Hydro-Meteorol. 2021, 732, 49–64.

4. Ngan, N.T.; Trung, N.H. Application of GIS and SWMM model to assess urban flooding in Metro Residential area of Ninh Kieu district. Earth Environ. Sci. 2023, 1170, 1–8.

5. Hieu, N.N.; Tu, T.T.; Hoa, H.V.; Nam, T.H. Evaluating approaches to dispersed flood reduction in urbanized low-lying areas on the periphery of HCMC. Builder 2019, 327-328, 1–21.

6. Majid, O.A.; Sanayei, H.R.Z.; Heidarzadeh, H.; Mahabadi, N.A. Modeling and investigating the effect of the LID methods on collection network of urban runoff using the SWMM model (case study: Shahrekord city). Model. Earth Syst. Enviro. 2020, 7, 1–16.

7. Luan, Q.; Fu, X.; Song, C.; Wang, H.; Liu, J.; Wang, Y. Runoff effect evaluation of LID through SWMM in typical mountainous, low-lying urban areas: A case study in China. Water 2017, 9(6), 439.

8. Zhang, Z.; Hu, W.; Wang, W.; Zhou, J.; Liu, D.; Qi, X.; Zhao, X. The hydrological effect and uncertainty assessment by runoff indicators based on SWMM for various LID facilities. J. Hydrol. 2022, 613, 128418.

9. Taji, S.G.; Regulwar, D.G. LID coupled design of drainage model using GIS and SWMM. J. Hydraul. Eng. 2021, 27, 376–389.

10. Yu, Y.; et al. A new LID spatial allocation optimization system at neighborhood scale: Integrated SWMM with PICEA-g using MATLAB as the platform. Sci. Total Environ. 2022, 831, 154843.

11. Binh, C.T. Feasibility assessment of sustainable stormwater management system planning for Long Thanh High-Tech Industrial Zone - Dong Nai. 2018.

12. IGIP and WACC-ARCASIA JV. Pilot implementation of Efficient Management Model (BMP) adapted to climate change in the central area of Soc Trang city, Soc Trang province. 2016.

13. Carter, T.; Butler, C. Ecological impacts of replacing traditional roofs with green roofs in two urban areas. Cities Environ. 2008, 1(2), 9.

14. Mentens, J.; Raes, D.; Hermy, M. Dirk Raes and Department, Green roofs as a tool for solving the rainwater runoff problem in the urbanized 21st century. Landscape Urban Plan. 2006, 77, 217–226.

15. De Oliveira, E.W.N.; da Silva, L.P.; Mary, W. Telhados verdes para habitações de interesse social: retenção das águas pluviais e conforto térmico. Universidade do Estado do Rio de Janeiro, 2009, 18.

16. Hoffmann, B.; et al. Sustainable urban drainage systems. Sustainable Urban Drainage Systems, 2016, pp. 20.

17. Zhang, L.; Ye, Z.; Shibata, S. Assessment of rain garden effects for the management of urban storm runoff in Japan. Sustainability 2020, 12(23), 9982.

18. National Standard (TCVN 7957:2008). Drainage - Networks and external structures - Design standards

19. Xu, T.; Jia, H.; Wang, Z.; Xuhui Mao & Changqing Xu. SWMM-based methodology for block-scale LID-BMPs planning based on site-scale multi-objective optimization: A case study in Tianjin. Front. Environ. Sci. Eng. 2017, 11, 1. https://doi.org/10.1007/s11783-017-0934-6.

20. Huong, N.T.T. Application of SWMM model for planning stormwater drainage to prevent flooding for Phuoc Kien, Phuoc Loc, Long Thoi, Nhon Duc communes - Nha Be district. J. Sci. Technol. Ton Duc Thang Univ. 2015.

21. Can Tho: Heavy off-season rain relieves heat after many hot days. Internet: Heavy off-season rain relieves heat after many hot days. Vietnam+ (VietnamPlus), 2023.

22. Park, J.; Yoo, Y.; Park, Y.; Yoon, H.; Kim, J.; Park, Y.; Jeon, J.H.; Lim, K.J. Analysis of runoff reduction with LID adoption using the SWMM. J. Korean Soc. Water Qual. 2008, 24(6), 805–815.

23. Rossman, L.A. Stom water management model user’s manual version 5.1. United States Evironment Protection Agency, United States, 2015, pp. 353.