Improved Framework for Assessing Vulnerability to Different Types of Urban Floods

Vulnerability assessment is an essential tool in mitigating the impact of urban flooding. To date, most flood vulnerability research has focused on one type of flood, such as a pluvial or fluvial flood. However, cities can suffer from urban flooding for several reasons, such as precipitation and river levee overtopping. Therefore, a vulnerability assessment considering different types of floods (pluvial floods, fluvial floods, and compound flooding induced by both rainfall and river overtopping) was conducted in this study. First, a coupled urban flood model, considering both overland and sewer network flow, was developed using the storm water management model (SWMM) and LISFLOOD-FP model to simulate the different types of flood and applied to Lishui, China. Then, the results of the flood modeling were combined with a vulnerability curve to obtain the potential impact of flooding on different land-use classes. The results indicated that different types of floods could have different influence areas and result in various degrees of flood vulnerability for different land-use classes. The results also suggest that urban flood vulnerability can be underestimated due to a lack of consideration of the full flood-induced factors.

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Assessment of Community Vulnerability to Different Types of Urban Floods: A Case for Lishui City, China

Sustainability ◽

10.3390/su12197865 ◽

2020 ◽

Vol 12 (19) ◽

pp. 7865 ◽

Cited By ~ 1

Author(s):

Quntao Yang ◽

Shuliang Zhang ◽

Qiang Dai ◽

Rui Yao

Keyword(s):

Urban Areas ◽

Flood Hazard ◽

Urban Flooding ◽

Urban Floods ◽

Flood Vulnerability ◽

Urban Flood ◽

Indicator Method ◽

Comprehensive Method ◽

Different Types ◽

Hydrometeorological Conditions

Urban flooding is a severe and pervasive hazard caused by climate change, urbanization, and limitations of municipal drainage systems. Cities face risks from different types of floods, depending on various geographical, environmental, and hydrometeorological conditions. In response to the growing threat of urban flooding, a better understanding of urban flood vulnerability is needed. In this study, a comprehensive method was developed to evaluate the vulnerability of different types of urban floods. First, a coupled urban flood model was built to obtain the extent of influence of various flood scenarios caused by rainfall and river levee overtopping. Second, an assessment framework for urban flood vulnerability based on an indicator method was used to evaluate the vulnerability in different flood hazard scenarios. Finally, the method was applied to Lishui City, China, and the distribution and pattern of urban flood vulnerability were studied. The results highlight the spatial variability of flooding and the vulnerability distributions of different types of urban floods. Compound floods were identified to cause more severe effects in the urban areas.

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Impact of cover change of land use on flood vulnerability in Jiangsu province

E3S Web of Conferences ◽

10.1051/e3sconf/202130801004 ◽

2021 ◽

Vol 308 ◽

pp. 01004

Author(s):

Shuangchen Du ◽

Zichuan Zhang

Keyword(s):

Land Use ◽

Population Density ◽

Local Economy ◽

Jiangsu Province ◽

Assessment Model ◽

Urban Systems ◽

Gis Technology ◽

Flood Vulnerability ◽

Urban Flood ◽

Flood Disasters

In the context of global warming and rising sea levels, as urbanization continues to increase, the risk situation of urban systems facing floods has become more severe. Therefore, we constructed a vulnerability assessment model for urban flood disasters in Jiangsu Province, focusing on using GIS technology to classify the land use of each city in Jiangsu Province for supervised learning. We also established a flood disaster vulnerability model to evaluate the Vulnerability of 13 cities in Jiangsu Province. Evaluation and analysis of the changes in land use vulnerability use flood disasters in Jiangsu Province from 2000 to 2020. The results show that from 2000 to 2020, the Vulnerability to flooding disasters is on the rise as a whole. Yancheng has the lowest average Vulnerability to flooding disasters due to the low population density and high greening rate in the built-up area. On the other hand, Nantong City has the most heightened average flood vulnerability due to excessive population density. The low greening rate in built-up areas has led to a worsening of flood vulnerability. Suggestions have been made to reduce the Vulnerability of urban floods in Jiangsu Province, such as vigorously developing the local economy, reasonably adjusting the rate of urbanization, and building drainage infrastructure.

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Groundwater Vulnerability Mapping in Urbanized Hydrological System Using Modified Drastic Model and Sensitivity Analysis

Environmental and Engineering Geoscience ◽

10.2113/eeg-1967 ◽

2018 ◽

Vol 24 (3) ◽

pp. 293-304 ◽

Cited By ~ 1

Author(s):

Ismail Chenini ◽

Adel Zghibi ◽

Mohamed Haythem Msaddek ◽

Mahmoud Dlala

Keyword(s):

Land Use ◽

Vadose Zone ◽

Vulnerability Assessment ◽

Groundwater Vulnerability ◽

Vulnerability Index ◽

Drastic Model ◽

Groundwater Vulnerability Mapping ◽

Groundwater Vulnerability Assessment ◽

Modified Drastic ◽

The Impact

Abstract The groundwater vulnerability assessment is normally applied to rural watersheds. However, urbanization modifies the hydrogeological processes. A modified DRASTIC model was adopted to establish a groundwater vulnerability map in an urbanized watershed. The modified DRASTIC model incorporated a land-use map, and net recharge was calculated taking into account the specificity of the urban hydrogeological system. The application of the proposed approach to the Mannouba watershed demonstrates that the groundwater vulnerability indexes range from 80 to 165. The study's results shows that 30 percent of the Mannouba watershed area has a high vulnerability index, 45 percent of the area has a medium index, and 25 percent of the study area has a low vulnerability index. To specify the effect of each DRASTIC factor on the calculated vulnerability index, sensitivity analyses were performed. Land use, topography, and soil media have an important theoretical weight greater than the effective weight. The impact of the vadose zone factor has the most important effective weight and affects the vulnerability index. The sensitivity assessment explored the variation in vulnerability after thematic layer removal. In this analysis, the removal of hydraulic conductivity and impact of vadose zone modified the vulnerability index. Groundwater vulnerability assessment in urbanized watersheds is difficult and has to consider the impact of urbanization in the hydrogeological parameters.

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Assessing changes on urban flood vulnerability through mapping land use from historical information

Hydrology and Earth System Sciences Discussions ◽

10.5194/hessd-12-6151-2015 ◽

2015 ◽

Vol 12 (6) ◽

pp. 6151-6177 ◽

Cited By ~ 1

Author(s):

M. Boudou ◽

B. Danière ◽

M. Lang

Keyword(s):

Land Use ◽

Flood Risk ◽

Local Scale ◽

Flood Events ◽

Historical Sources ◽

Flood Vulnerability ◽

Urban Flood ◽

Xxth Century ◽

Historical Information ◽

Significant Events

Abstract. This paper presents a diachronic appraisal of flood vulnerability of two French cities, respectively Besançon and Moissac, which have been largely impacted by two ancient floods in January 1910 and March 1930. Both flood events figured among the most significant events recorded in France during the XXth century. An analysis of historical sources allows the mapping of land use and occupation within the flood extent of the two historical floods, both in past and present contexts. It gives an insight of the complexity of flood risk evolution, at a local scale.

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Vulnerability Assessment of Urban Floods in Lahore, Pakistan using GIS based integrated Analytical Hierarchy Approach

Proceedings of the Pakistan Academy of Sciences: A. Physical and Computational Sciences ◽

10.53560/ppasa(58-1)604 ◽

2021 ◽

Vol 58 (1) ◽

pp. 85-96

Author(s):

Sahar Zia ◽

Safdar A. Shirazi ◽

Muhammad Nasar-u-Minallah

Keyword(s):

Land Use ◽

Flood Risk ◽

Urban Areas ◽

Physical Factors ◽

Urban Flooding ◽

Residential Areas ◽

Urban Flood ◽

Risk Areas ◽

Practical Tool ◽

Flood Risk Mapping

Urban flooding is getting attention due to its adverse impact on urban lives in mega cities of the developing world particularly Pakistan. This study aims at finding a suitable methodology for mapping urban flooded areas to estimate urban flooding vulnerability risks in the cities of developing countries particularly Lahore, Pakistan. To detect the urban flooded vulnerability and risk areas due to natural disaster, GIS-based integrated Analytical Hierarchy Process (AHP) is applied for the case of Lahore, which is the second most populous city and capital of the Punjab, Pakistan. For the present research, the flood risk mapping is prepared by considering these significant physical factors like elevation, slope, and distribution of rainfall, land use, density of the drainage network, and soil type. Results show that the land use factor is the most significant to detect vulnerable areas near roads and commercial areas. For instance, this method of detection is 88%, 80% and 70% accurate for roads, commercial and residential areas. The methodology implemented in the present research can provide a practical tool and techniques to relevant policy and decision-makers authorities to prioritize and actions to mitigate flood risk and vulnerabilities and identify certain vulnerable urban areas, while formulating a methodology for future urban flood risk and vulnerability mitigation through an objectively simple and organizationally secure approach.

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Modelling and optimization of land use/land cover change in a developing urban catchment

Water Science & Technology ◽

10.2166/wst.2017.121 ◽

2017 ◽

Vol 75 (11) ◽

pp. 2527-2537 ◽

Cited By ~ 2

Author(s):

Ping Xu ◽

Fei Gao ◽

Junchao He ◽

Xinxin Ren ◽

Weijin Xi

Keyword(s):

Land Use ◽

Low Impact Development ◽

Oxygen Demand ◽

Annual Rainfall ◽

Optimal Planning ◽

Urban Catchment ◽

Storm Water Management Model ◽

Urban Stormwater Runoff ◽

Rainfall Runoff Model ◽

The Impact

The impacts of land use/cover change (LUCC) on hydrological processes and water resources are mainly reflected in changes in runoff and pollutant variations. Low impact development (LID) technology is utilized as an effective strategy to control urban stormwater runoff and pollution in the urban catchment. In this study, the impact of LUCC on runoff and pollutants in an urbanizing catchment of Guang-Ming New District in Shenzhen, China, were quantified using a dynamic rainfall-runoff model with the EPA Storm Water Management Model (SWMM). Based on the simulations and observations, the main objectives of this study were: (1) to evaluate the catchment runoff and pollutant variations with LUCC, (2) to select and optimize the appropriate layout of LID in a planning scenario for reducing the growth of runoff and pollutants under LUCC, (3) to assess the optimal planning schemes for land use/cover. The results showed that compared to 2013, the runoff volume, peak flow and pollution load of suspended solids (SS), and chemical oxygen demand increased by 35.1%, 33.6% and 248.5%, and 54.5% respectively in a traditional planning scenario. The assessment result of optimal planning of land use showed that annual rainfall control of land use for an optimal planning scenario with LID technology was 65%, and SS pollutant load reduction efficiency 65.6%.

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An Object-Based Image Analysis of WorldView-3 Image for Urban Flood Vulnerability Assessment and Dissemination Through ESRI Story Maps

Journal of the Indian Society of Remote Sensing ◽

10.1007/s12524-021-01416-4 ◽

2021 ◽

Author(s):

Musunuru Aahlaad ◽

Chitrini Mozumder ◽

Nitin Tripathi ◽

Indrajit Pal

Keyword(s):

Image Analysis ◽

Vulnerability Assessment ◽

Flood Vulnerability ◽

Urban Flood ◽

Object Based Image Analysis ◽

Object Based ◽

Story Maps ◽

Flood Vulnerability Assessment

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Variable sets method for urban flood vulnerability assessment

Science China Technological Sciences ◽

10.1007/s11431-013-5393-0 ◽

2013 ◽

Vol 56 (12) ◽

pp. 3129-3136 ◽

Cited By ~ 23

Author(s):

ShouYu Chen ◽

ZhiChun Xue ◽

Min Li ◽

XuePing Zhu

Keyword(s):

Vulnerability Assessment ◽

Flood Vulnerability ◽

Urban Flood ◽

Flood Vulnerability Assessment

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Spatial Determinants of Land Conversion for Various Urban Use: A Case Study of Beijing

ISPRS International Journal of Geo-Information ◽

10.3390/ijgi9120708 ◽

2020 ◽

Vol 9 (12) ◽

pp. 708

Author(s):

Daquan Huang ◽

Erxuan Chu ◽

Tao Liu

Keyword(s):

Land Use ◽

Spatial Autocorrelation ◽

Driving Forces ◽

Municipal Government ◽

Land Use Changes ◽

Construction Land ◽

Different Types ◽

Negative Impacts ◽

The Impact

Studying the factors that influence the expansion of different types of construction land is instrumental in formulating targeted policies and regulations, and can reduce or prevent the negative impacts of unreasonable land use changes. Using land use survey data of Beijing (2001 and 2010), an autologistic model quantitatively analyzed the leading driving forces and differences in four types of construction land expansion (industrial, residential, public service, and commercial land types), focusing on the impact of spatial autocorrelation. The results showed that the influencing factors vary greatly for different types of construction land expansion; the same factor may have a different impact on different construction land, and both planning factors and spatial autocorrelation variables have a significant positive effect on the four types. Accordingly, the municipal government should consider the differences in the expansion mechanisms and driving forces of different construction land and formulate suitable planning schemes, observe the impact of spatial autocorrelation on construction land expansion, and guide spatial agglomeration through policies while appropriately controlling the scale of expansion. The methods and policy recommendations of this research are significant for urban land expansion research and policy formulations in other transition economies and developing countries.

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