Estimation of flood damage functions for river basin planning: a case study in Bangladesh

Abstract. To date, in Austria no empirical assessment of absolute damage curves has been realized on the basis of detailed information on flooded buildings due to a dam breach, presumably because of the lack of data. This paper tries to fill this gap by estimating an absolute flood-damage curve, based on data of a recent flood event in Austria in 2006. First, a concise analysis of the case study area is conducted, i.e., the maximum damage potential is identified by using raster-based GIS. Thereafter, previous literature findings on existing flood-damage functions are considered in order to determine a volume-water damage function that can be used for further flood damage assessment. Finally, the flood damage function is cross validated and applied in prediction of damage potential in the study area. For future development of the estimated flood damage curve, and to aid more general use, we propose verification against field data on damage caused by natural waves in rivers.

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Indoor Property Flood damage Assessment and Insurance for Residential Buildings based on HAZUS -- A case study of Mayangxi River Basin

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/643/1/012158 ◽

2021 ◽

Vol 643 ◽

pp. 012158

Author(s):

Nan Deng ◽

Xiao Wang ◽

Ying Yang

Keyword(s):

River Basin ◽

Damage Assessment ◽

Residential Buildings ◽

Flood Damage ◽

Flood Damage Assessment

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Flood damage assessment to economic activities: implementation and transferability of French methodology

10.5194/egusphere-egu21-10049 ◽

2021 ◽

Author(s):

Frédéric Grelot ◽

Marta Galliani ◽

Pauline Bremond ◽

Daniela Molinari ◽

Lilian Pugnet ◽

...

Keyword(s):

Residential Buildings ◽

Flood Damage ◽

Economic Activities ◽

Damage Functions ◽

Flood Prevention ◽

Damage Modelling ◽

French Case ◽

Damage Data ◽

The City

<p>Since 2010, a national method is available in France for multi-criteria analysis of flood prevention projects. The method uses national damage functions to estimate losses to the different exposed items, including economic activities. Despite the business sector suffers significant losses in case of flood, flood damage modelling to businesses is less advanced than for other exposed sectors, as e.g. residential buildings. Reasons are many and include: the high variability of activities types composing this sector and then the difficulty of standardisation (above all when contents are considered), and the lack of data to understand and quantify damage and validate existing modelling tools. The collection of damage data in two case studies, in France and in Italy, and the collaboration between two research groups in the two countries allowed to study the applicability, the validity, and the transferability of the French damage functions for economic activities to Italy. Firstly, the functions were tested and validated in a French case study, i.e. the flood that affected the &#206;le-de-France Region in 2016. This validation exercise faced the problem of working with few information about the identity of the activities, and propose a solution; moreover, it allowed to verify the actual availability of input data to implement the functions in France and pointed out the paucity of information to validate the methodology. Testing the functions in a foreign case study, i.e. the flood occurred in 2002 in Italy in the city of Lodi, allowed instead to verify the transferability of the method.</p>

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Integrated river basin planning and management: a case study of the Zayandehrud River basin, Iran

Water International ◽

10.1080/02508060.2013.823815 ◽

2013 ◽

Vol 38 (6) ◽

pp. 724-743 ◽

Cited By ~ 7

Author(s):

Morteza Safaei ◽

Hamid R. Safavi ◽

Daniel Peter Loucks ◽

Azadeh Ahmadi ◽

Wil van der Krogt

Keyword(s):

River Basin ◽

Planning And Management ◽

River Basin Planning

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About the influence of elevation model quality and small-scale damage functions on flood damage estimation

Natural Hazards and Earth System Science ◽

10.5194/nhess-11-3327-2011 ◽

2011 ◽

Vol 11 (12) ◽

pp. 3327-3334 ◽

Cited By ~ 27

Author(s):

M. Boettle ◽

J. P. Kropp ◽

L. Reiber ◽

O. Roithmeier ◽

D. Rybski ◽

...

Keyword(s):

Influencing Factor ◽

Storm Surges ◽

Flood Damage ◽

Damage Function ◽

Building Damage ◽

Small Scale ◽

Model Quality ◽

Damage Functions ◽

Elevation Model

Abstract. The assessment of coastal flood risks in a particular region requires the estimation of typical damages caused by storm surges of certain characteristics and annualities. Although the damage depends on a multitude of factors, including flow velocity, duration of flood, precaution, etc., the relationship between flood events and the corresponding average damages is usually described by a stage-damage function, which considers the maximum water level as the only damage influencing factor. Starting with different (microscale) building damage functions we elaborate a macroscopic damage function for the entire case study area Kalundborg (Denmark) on the basis of multiple coarse-graining methods and assumptions of the hydrological connectivity. We find that for small events, the macroscopic damage function mostly depends on the properties of the elevation model, while for large events it strongly depends on the assumed building damage function. In general, the damage in the case study increases exponentially up to a certain level and then less steep.

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Anticipating of Potential Climate and Land Use Change Impacts on Floods: A Case Study of the Lower Nam Phong River Basin

Water ◽

10.3390/w12041158 ◽

2020 ◽

Vol 12 (4) ◽

pp. 1158 ◽

Cited By ~ 1

Author(s):

Kittiwet Kuntiyawichai ◽

Winai Sri-Amporn ◽

Sarayut Wongsasri ◽

Prinya Chindaprasirt

Keyword(s):

Land Use ◽

River Basin ◽

Climate Models ◽

Land Use Changes ◽

Flood Damage ◽

Mitigation Strategies ◽

Inundation Maps ◽

Rcp 8.5 ◽

Analysis System

This study aimed at quantifying the impacts of climate and land use changes on flood damage on different flood occurrences. A Hydrologic Engineering Center’s Hydrologic Modeling System (HEC-HMS) model was calibrated for the period 2005–2011 and validated in the period 2012–2017, and was used to generate hydrographs using rainfall during the period 2020–2039 from CNRM-CM5, IPSL-CM5A-MR, and MPI-ESM-LR climate models under Representative Concentration Pathways (RCPs) 4.5 and 8.5. A Hydrologic Engineering Center’s River Analysis System (HEC-RAS) model for use in generating inundation maps from hydrographs produced by HEC-HMS was calibrated and validated for 2010 and 2011 period, respectively. The climate and land use changes showed insignificant impacts on the extent of floods during 25-, 50-, and 100-year flood events, i.e., inundation in 2039 under RCP 4.5 is smaller than baseline (2000–2017) by 4.97–8.59 km2, whereas a larger difference of inundation is found for RCP 8.5 (0.39–5.30 km2). In contrast, the flood damage under RCP 4.5 (14.84–18.02 million US$) is higher than the baseline by 4.32–5.33 million US$, while the highest was found for RCP 8.5 (16.24–18.67 million US$). The agriculture was the most vulnerable, with a damage of 4.50–5.44 million US$ in RCP 4.5 and 4.94–5.72 million US$ in RCP 8.5, whereas baseline damages were 4.49–6.09 million US$. Finally, the findings are useful in the delivery of flood mitigation strategies to minimize flood risks in the lower Nam Phong River Basin.

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Uncertainty in flood damage estimates and its potential effect on investment decisions

Natural Hazards and Earth System Science ◽

10.5194/nhess-16-1-2016 ◽

2016 ◽

Vol 16 (1) ◽

pp. 1-14 ◽

Cited By ~ 50

Author(s):

D. J. Wagenaar ◽

K. M. de Bruijn ◽

L. M. Bouwer ◽

H. de Moel

Keyword(s):

Monte Carlo ◽

Monte Carlo Analysis ◽

Investment Strategy ◽

Potential Effect ◽

Flood Damage ◽

Flood Events ◽

Damage Functions ◽

Damage Models ◽

Damage Estimates

Abstract. This paper addresses the large differences that are found between damage estimates of different flood damage models. It explains how implicit assumptions in flood damage functions and maximum damages can have large effects on flood damage estimates. This explanation is then used to quantify the uncertainty in the damage estimates with a Monte Carlo analysis. The Monte Carlo analysis uses a damage function library with 272 functions from seven different flood damage models. The paper shows that the resulting uncertainties in estimated damages are in the order of magnitude of a factor of 2 to 5. The uncertainty is typically larger for flood events with small water depths and for smaller flood events. The implications of the uncertainty in damage estimates for flood risk management are illustrated by a case study in which the economic optimal investment strategy for a dike segment in the Netherlands is determined. The case study shows that the uncertainty in flood damage estimates can lead to significant over- or under-investments.

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Evaluating stakeholder involvement in river basin planning: a Scottish case study

Water Policy ◽

10.2166/wp.2007.018 ◽

2007 ◽

Vol 9 (5) ◽

pp. 493-512 ◽

Cited By ~ 50

Author(s):

Kirsty L. Blackstock ◽

Caspian Richards

Keyword(s):

River Basin ◽

Environmental Governance ◽

Planning Process ◽

Stakeholder Involvement ◽

River Basin Management ◽

Critical Examination ◽

Basin Management ◽

River Basin Management Plans ◽

River Basin Planning

River basin management demonstrates the increasing importance of active stakeholder involvement within environmental governance, whereby planning and implementation relies on outcomes from collective reasoned discussion. However, claims that stakeholder involvement improves environmental governance are rarely subject to critical examination. This lack of evaluation is problematic for several reasons including: lack of reflection on the purpose of involvement processes or their limitations; a poor conceptualisation of who should be defined as a stakeholder; how different knowledge claims should be treated; and how power relationships affect the process dynamics. This paper engages with the theoretical claims for active involvement and uses a Scottish case study to illustrate to what extent these claims were met during a river basin planning process. The evaluation highlights lessons for policy makers designing river basin management plans, particularly in the context of the pressing timetable for the implementation of the European Water Framework Directive. These lessons include how to maximise these benefits whilst proactively managing conflicts that occur, particularly when trying to sustain a coalition of individuals representing broader organisations and constituencies in a time-consuming and challenging process.

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