A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Impact of Land Use Changes on Urban Flooding in Patna City
Urban flooding is a serious problem in many regions of the world, and it is a natural calamity that occurs every year. In India, urban flooding is increasing in many cities such as Mumbai, Bengaluru, Delhi, Hyderabad and Patna. Patna city is the congested urban society in Bihar, India. Frequent flooding has been observed in some areas of Patna city due to shrinking of open space, illegal construction, old and chocked drainage system, and lack of waste disposal facilities. Land use affects the urban flooding, and thus, the study of impact of land use on urban flooding is utmost important. In this study, impact of land use changes on urban flooding of Patna city has been studied using Erdas Imagine, ArcGIS, and SCS-CN method during the year 2005–2019. Rainfall data was used to compute antecedent moisture condition, and soil map was used to prepare HSG map. The runoff was computed using the SCS-CN method. The result shows that the change in land use with time affects the curve number and surface runoff. It was found that the built-up area was increased by 22.82% and agriculture land was decreased by 15.48% between 2005 and 2019. During the year 2010–2015, there was a significant change in land use and runoff was increased from 16.8 to 23.72%. This study identified the significant impact of the land use on runoff and consequently on flooding.
Impact of Land Use Changes on Urban Flooding in Patna City
Urban flooding is a serious problem in many regions of the world, and it is a natural calamity that occurs every year. In India, urban flooding is increasing in many cities such as Mumbai, Bengaluru, Delhi, Hyderabad and Patna. Patna city is the congested urban society in Bihar, India. Frequent flooding has been observed in some areas of Patna city due to shrinking of open space, illegal construction, old and chocked drainage system, and lack of waste disposal facilities. Land use affects the urban flooding, and thus, the study of impact of land use on urban flooding is utmost important. In this study, impact of land use changes on urban flooding of Patna city has been studied using Erdas Imagine, ArcGIS, and SCS-CN method during the year 2005–2019. Rainfall data was used to compute antecedent moisture condition, and soil map was used to prepare HSG map. The runoff was computed using the SCS-CN method. The result shows that the change in land use with time affects the curve number and surface runoff. It was found that the built-up area was increased by 22.82% and agriculture land was decreased by 15.48% between 2005 and 2019. During the year 2010–2015, there was a significant change in land use and runoff was increased from 16.8 to 23.72%. This study identified the significant impact of the land use on runoff and consequently on flooding.
Impact of Land Use Changes on Urban Flooding in Patna City
Lecture Notes in Civil Engineering
Timbadiya, P. V. (editor) / Patel, Prem Lal (editor) / Singh, Vijay P. (editor) / Manekar, Vivek L. (editor) / Ranjan, Shashi (author) / Danish, Imamuddin Mohd (author) / Singh, Vivekanand (author)
International Conference on Hydraulics, Water Resources and Coastal Engineering ; 2021
2023-09-01
8 pages
Article/Chapter (Book)
Electronic Resource
English
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