The Risk Assessment of Urban Flood Disaster Based on Elevation Ladder Data

2012 ◽  
Vol 446-449 ◽  
pp. 3046-3050
Author(s):  
Xin He ◽  
Ai Juan Zou
Keyword(s):  
Risk Assessment ◽  
Flood Disaster ◽  
Urban Flood

The Risk Assessment of Urban Flood Disaster Based on Elevation Ladder Data

2012 ◽  
Vol 446-449 ◽  
pp. 3046-3050
Author(s):  
Xin He ◽  
Ai Juan Zou
Keyword(s):  
Risk Assessment ◽  
Objective Assessment ◽  
Drainage System ◽  
Flood Disaster ◽  
Loss Assessment ◽  
Building Site ◽  
Urban Flood ◽  
System Building ◽  
Terrain Elevation ◽  
Important Basis

With the urbanization, the risk of urban flood disaster has been concern of pubic agency and academy. The related literatures were reviewed and these methods were evaluated. And then the approach for risk assessment of urban flood disaster was proposed based on elevation ladder data. These factor influencing flood process were taken into account such as terrain, elevation, drainage system, building site etc. The result suggests we can calculate the submerged scope and distribution of water depth more accurately and provide an important basis for loss assessment of the objective assessment and prediction analysis of flood disaster.

scholarly journals A Case Study of Flood Risk Evaluation Based on Emergy Theory and Cloud Model in Anyang Region, China

Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 420
Author(s):  
Zening Wu ◽  
Yuhai Cui ◽  
Yuan Guo
Keyword(s):  
Risk Assessment ◽  
Flood Risk ◽  
Flood Control ◽  
Flood Hazard ◽  
Cloud Model ◽  
Flood Disaster ◽  
Assessment System ◽  
Assessment Model ◽  
Flood Risk Assessment ◽  
Emergy Theory

With the progression of climate change, the intensity and frequency of extreme rainfall have increased in many parts of the world, while the continuous acceleration of urbanization has made cities more vulnerable to floods. In order to effectively estimate and assess the risks brought by flood disasters, this paper proposes a regional flood disaster risk assessment model combining emergy theory and the cloud model. The emergy theory can measure many kinds of hazardous factor and convert them into unified solar emergy (sej) for quantification. The cloud model can transform the uncertainty in flood risk assessment into certainty in an appropriate way, making the urban flood risk assessment more accurate and effective. In this study, the flood risk assessment model combines the advantages of the two research methods to establish a natural and social dual flood risk assessment system. Based on this, the risk assessment system of the flood hazard cloud model is established. This model was used in a flood disaster risk assessment, and the risk level was divided into five levels: very low risk, low risk, medium risk, high risk, and very high risk. Flood hazard risk results were obtained by using the entropy weight method and fuzzy transformation method. As an example for the application of this model, this paper focuses on the Anyang region which has a typical continental monsoon climate. The results show that the Anyang region has a serious flood disaster threat. Within this region, Linzhou County and Anyang County have very high levels of risk for flood disaster, while Hua County, Neihuang County, Wenfeng District and Beiguan District have high levels of risk for flood disaster. These areas are the core urban areas and the economic center of local administrative regions, with 70% of the industrial clusters being situated in these regions. Only with the coordinated development of regional flood control planning, economy, and population, and reductions in the uncertainty of existing flood control and drainage facilities can the sustainable, healthy and stable development of the region be maintained.

scholarly journals Integrating human behaviour dynamics into flood disaster risk assessment

2018 ◽  
Vol 8 (3) ◽  
pp. 193-199 ◽  
Author(s):  
J. C. J. H. Aerts ◽  
W. J. Botzen ◽  
K. C. Clarke ◽  
S. L. Cutter ◽  
J. W. Hall ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Disaster Risk ◽  
Flood Disaster ◽  
Human Behaviour ◽  
Disaster Risk Assessment

scholarly journals A Review of Recent Studies on Urban Stormwater Drainage System for Urban Flood Management

2020 ◽  
Author(s):  
Manaye Teshome ◽  
Allu Revathi Devi
Keyword(s):  
Disaster Management ◽  
Management Strategies ◽  
Drainage System ◽  
Flood Management ◽  
Flood Disaster ◽  
Future Research ◽  
Urban Flooding ◽  
Urban Stormwater ◽  
Urban Flood ◽  
Pluvial Flooding

Stormwater drainage and urban flooding are the popular issues in policy agendas and academia. Although the research on these title increases steadily an integrated review on stormwater drainage and urban flood with a focus on pluvial flooding has yet to be produced. This paper presents a critical review on stormwater drainage and urban flood based on 78 selected journal papers published over the period of 1990 to 2018. The review focus on pluvial flooding to relate urban stormwater drainage management and urban flood disaster management and to show the links between the two. The methods taken to manage urban stormwater drainage and urban flooding as well as the complexity of achieving a comprehensive urban flood disaster management are evaluated and discussed. To better understand the concepts behind urban flood and improve the urban flood risk management strategies, recommendation of future research directions are also provided.

scholarly journals Risk Assessment of Urban Floods Based on a SWMM-MIKE21-Coupled Model Using GF-2 Data

2021 ◽  
Vol 13 (21) ◽  
pp. 4381
Author(s):  
Lidong Zhao ◽  
Ting Zhang ◽  
Jun Fu ◽  
Jianzhu Li ◽  
Zhengxiong Cao ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Return Period ◽  
Flood Risk ◽  
Global Climate ◽  
Total Loss ◽  
Return Periods ◽  
Rapid Urbanization ◽  
Urban Floods ◽  
Urban Flood ◽  
Inundation Depth

Global climate change and rapid urbanization have caused increases in urban floods. Urban flood risk assessment is a vital method for preventing and controlling such disasters. This paper takes the central region of Cangzhou city in Hebei Province as an example. Detailed topographical information, such as the buildings and roads in the study area, was extracted from GF-2 data. By coupling the two models, the SWMM and MIKE21, the spatial distribution of the inundation region, and the water depth in the study area under different return periods, were simulated in detail. The results showed that, for the different return periods, the inundation region was generally consistent. However, there was a large increase in the mean inundation depth within a 10-to-30-year return period, and the increase in the maximum inundation depth and inundation area remained steady. The comprehensive runoff coefficient in all of the scenarios exceeded 0.8, indicating that the drainage system in the study area is insufficient and has a higher flood risk. The flood risk of the study area was evaluated based on the damage curve, which was obtained from field investigations. The results demonstrate that the loss per unit area was less than CNY 250/m2 in each return period in the majority of the damaged areas. Additionally, the total loss was mainly influenced by the damaged area, but, in commercial areas, the total loss was highly sensitive to the inundation depth.

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