The Impact of the 2011 Floods, and Flood Management on Thai Households

2014 ◽  
pp. 75-104 ◽  
Author(s):  
Nipon Poaponsakorn ◽  
Pitsom Meethom ◽  
Kamphol Pantakua
Keyword(s):  
Flood Management ◽  
The Impact

Nature-Based Solutions: Dependency of Effectiveness on Spatial Configuration

2020 ◽  
Author(s):  
Ian Pattison
Keyword(s):  
Flood Risk ◽  
Critical Infrastructure ◽  
Spatial Configuration ◽  
Storm Track ◽  
Spatial Location ◽  
Flood Management ◽  
Clear Understanding ◽  
Storm Events ◽  
Catchment Scale ◽  
The Impact

<p>Several recent large flood events have had severe economic and social impacts. The winter 2015-16 UK floods resulted in 16,000 properties flooding and damage to critical infrastructure. It is increasingly being recognised that traditional approaches of flood defence are not sustainable due to the pressures of climate change and economic constraints. The solution to the flood risk problem in cities is no longer seen as being just on-site, and thinking is shifting upstream and to the catchment/landscape scales, known as Nature-Based Solutions or Natural Flood Management (NFM). The approach consists of measures that “Work with Natural Processes”, such as storing water in ponds, and slowing the flow in rivers. The evidence for the impacts is strong at the local scale, but the larger spatial scale impact is highly uncertain due to the cumulative impacts resulting from amplifying/mitigating effects of different interventions, controlled by spatial location and storm-track interaction.</p><p>To date, Nature-Based Solution schemes have proceeded on an opportunistic basis, without a clear design strategy (which measure and where to implement it). However, if schemes are implemented without clear understanding of their impacts, they may, at best, fail to achieve the optimum flood reduction benefit downstream, or, at worst, make flooding more severe (if implemented in inappropriate locations, when tributaries’ flows are synchronised).  </p><p><span>Impacts of NFM measures are spatially and temporally dependent i.e. the same intervention in two locations will have different effects on flows, and the same intervention will have different impacts during different storm events. Therefore, it is essential that when strategically designing NFM schemes for catchments, that WHERE? and WHAT? are answered together to optimise the impact, as it is possible that whilst upstream NFM may be beneficial locally it may make tributary peaks coincide and make flood magnitudes worse downstream. Here we demonstrate the importance of the spatial configuration of Nature-Based Solutions on their catchment scale effectiveness in reducing flood risk.</span></p>

scholarly journals Ecosystem Services Dynamics in Bogor Regency

2021 ◽  
Vol 53 (2) ◽  
Author(s):  
Sri Lestari Munajati ◽  
Hariadi Kartodihardjo ◽  
Muhammad Buce Saleh ◽  
Nurwadjedi Nurwadjedi
Keyword(s):  
Land Use ◽  
Ecosystem Services ◽  
Open Space ◽  
Flood Management ◽  
Analytic Hierarchy ◽  
Land Facets ◽  
The Impact ◽  
Hierarchy Process ◽  
Supply Water

The decline in the quality of ecosystem services in Bogor Regency is indicated by the existence of various natural disasters in recent years. Prudent development must be carried out to minimize the impact of a decrease in the ecosystem services index. The purpose of this research is to map ecosystem services for food supply, water supply, water and flood management, and tourism aspects within 2000-2017. The data used were land cover and land facet maps at a scale of 1:25,000 obtained from BIG, accompanied by a reinterpretation process. The data sources were Indonesia's topographic maps (RBI), Citra SPOT 7, DEMNAS, and field surveys. The ecosystem services index (ESI) is calculated based on an analysis of changes in land use and land facets. The value of ESI was weighted using analytic hierarchy process approaches to each of the variables assessed by experts. The results showed that the largest changes in land use occurred in residential and forest areas. The residential area increased by 1.96%, while the forest area decreased by 1.8% in 17 years. Bogor Regency is dominated by forest and rice fields which are spread over four main landforms, namely volcanic, structural, fluvial, and karst. The most significant increase of 5.65% was found in the clean water provisioning function, while the most significant decrease of 38.47% was found in the tourism and ecotourism sector. Accumulatively, the increase in ESI was 23%, while the decrease was 20.64%.  Mitigation efforts that can be done are to maintain the availability of green open space by implementing strong regulations.

scholarly journals Flood Management Model in Digital Era, Using SAST (Strtategic Assumption Surfacing and Testing) and the Exponential Comparison Method (ECM): A Case Study in Jakarta

2019 ◽  
pp. 1-9
Author(s):  
Kholil . ◽  
Diah Prinajati ◽  
Nikki Astarina Annisari
Keyword(s):  
Public Involvement ◽  
Field Research ◽  
Flood Management ◽  
Comparison Method ◽  
Sea Levels ◽  
Digital Era ◽  
Rising Sea Levels ◽  
The Right ◽  
The Impact ◽  
Human Losses

Flooding is a regular annual disaster in Jakarta, especially in December to February. Geographical position of Jakarta which is 40% below sea level, causes flooding not only from rain, but also from rob due to rising sea levels. In the last 5 years the impact of flooding became more serious, leading to economic and human losses. This study aims to determine the right strategy of flood mitigation by public involvement in the digital era. The method used includes combination of quality input data from experts representing BNPB (National Disaster Agency), Local Goverment, Academics, Community Leaders, Businessmen, and Practitioners, in addition to vulnerable field research. Data analysis uses the ECM (Exponential Comparison Method) and SAST (Strategic Assumption Surfacing and Testing). The result of the study indicates that the most appropriate strategy to mitigate flood disaster is establishment of “Disaster Information Center” and "Disaster alert groups” involving every stakeholder from the community. Utilization of social media, especially WhatsApp, Facebook, and Instagram has been very helpful to share information of flood, especially how to prepare an emergency action to reduce economic and human losses.

scholarly journals An Expert System for Local Flood Response Coordination and Training

2017 ◽  
Vol 6 (2) ◽  
pp. 1
Author(s):  
Xiaoyin Zhang ◽  
Gary Moynihan ◽  
Andrew Ernest ◽  
Joseph Gutenson
Keyword(s):  
Expert System ◽  
Local Governments ◽  
Flood Management ◽  
Emergency Managers ◽  
Structure Report ◽  
Coordination System ◽  
Flood Response ◽  
Core Capabilities ◽  
The Impact ◽  
And Training

Flood response is an essential component of flood management to rescue people, reduce property loss, and limit the impact to the environment. Effective flood response depends on a sound coordination structure with unified responsibilities, smooth communications, and scalable response plans. An efficient coordination system, including command and management structures, is built on a thorough understanding of the responsibilities and actions of each role for delivering the response core capabilities. Collecting, sharing, using, and handling the knowledge require great efforts in knowledge management. To further enhance such efforts, an expert system for local flood response coordination and training (LFRS) was developed and introduced in this paper. LFRS can help emergency managers construct scalable, flexible, and adaptable coordination structures and support educating flood response entities, such as individuals, communities, nongovernmental organizations, private sector entities, and local governments. The output of the prototype expert system contains two CSV formatted reports as well as prompt screens. The operational structure report hierarchically depicts the crisscross linkages among all responders, their primary functions, and contact information. Another report summarizes the responsibilities and actions of a certain role of flood responders from commanders to individuals.

scholarly journals The Impact of Late Holocene Flood Management on the Central Po Plain (Northern Italy)

2018 ◽  
Vol 10 (11) ◽  
pp. 3968 ◽  
Author(s):  
Filippo Brandolini ◽  
Mauro Cremaschi
Keyword(s):  
Roman Empire ◽  
Human Activities ◽  
Large Scale ◽  
Management Practices ◽  
Land Reclamation ◽  
Anthropogenic Activities ◽  
Arable Land ◽  
Flood Management ◽  
Po Plain ◽  
The Impact

Fluvial environments have always played a crucial role in human history. The necessity of fertile land and fresh water for agriculture has led populations to settle in floodplains more frequently than in other environments. Floodplains are complex human–water systems in which the mutual interaction between anthropogenic activities and environment affected the landscape development. In this paper, we analyzed the evolution of the Central Po Plain (Italy) during the Medieval period through a multi-proxy record of geomorphological, archaeological and historical data. The collapse of the Western Roman Empire (5th century AD) coincided with a progressive waterlogging of large floodplain areas. The results obtained by this research shed new light on the consequences that Post-Roman land and water management activities had on landscape evolution. In particular, the exploitation of fluvial sediments through flood management practices had the effect of reclaiming the swamps, but also altered the natural geomorphological development of the area. Even so, the Medieval human activities were more in equilibrium with the natural system than with the later Renaissance large-scale land reclamation works that profoundly modified the landscape turning the wetland environment into the arable land visible today. The analysis of fluvial palaeoenvironments and their relation with past human activities can provide valuable indications for planning more sustainable urbanized alluvial landscapes in future.

scholarly journals A Remote Sensing Based Integrated Approach to Quantify the Impact of Fluvial and Pluvial Flooding in an Urban Catchment

2019 ◽  
Vol 11 (5) ◽  
pp. 577 ◽  
Author(s):  
Manoranjan Muthusamy ◽  
Monica Rivas Casado ◽  
Gloria Salmoral ◽  
Tracy Irvine ◽  
Paul Leinster
Keyword(s):  
Remote Sensing ◽  
Digital Terrain Model ◽  
Integrated Approach ◽  
Flood Management ◽  
Flood Damage ◽  
Water Flooding ◽  
Surface Model ◽  
Pluvial Flooding ◽  
Residential Properties ◽  
The Impact

Pluvial (surface water) flooding is often the cause of significant flood damage in urbanareas. However, pluvial flooding is often overlooked in catchments which are historically knownfor fluvial floods. In this study, we present a conceptual remote sensing based integrated approachto enhance current practice in the estimation of flood extent and damage and characterise the spatialdistribution of pluvial and fluvial flooding. Cockermouth, a town which is highly prone to flooding,was selected as a study site. The flood event caused by named storm Desmond in 2015 (5-6/12/2015)was selected for this study. A high resolution digital elevation model (DEM) was produced from acomposite digital surface model (DSM) and a digital terrain model (DTM) obtained from theEnvironment Agency. Using this DEM, a 2D flood model was developed in HEC-RAS (v5) 2D forthe study site. Simulations were carried out with and without pluvial flooding. Calibrated modelswere then used to compare the fluvial and combined (pluvial and fluvial) flood damage areas fordifferent land use types. The number of residential properties affected by both fluvial and combinedflooding was compared using a combination of modelled results and data collected from UnmannedAircraft Systems (UAS). As far as the authors are aware, this is the first time that remote sensingdata, hydrological modelling and flood damage data at a property level have been combined todifferentiate between the extent of flooding and damage caused by fluvial and pluvial flooding inthe same event. Results show that the contribution of pluvial flooding should not be ignored, evenin a catchment where fluvial flooding is the major cause of the flood damages. Although theadditional flood depths caused by the pluvial contribution were lower than the fluvial flood depths,the affected area is still significant. Pluvial flooding increased the overall number of affectedproperties by 25%. In addition, it increased the flood depths in a number of properties that wereidentified as being affected by fluvial flooding, in some cases by more than 50%. These findingsshow the importance of taking pluvial flooding into consideration in flood management practices.Further, most of the data used in this study was obtained via remote sensing methods, includingUAS. This demonstrates the merit of developing a remote sensing based framework to enhancecurrent practices in the estimation of both flood extent and damage.

scholarly journals The Effect of Climate Change and Urbanization on the Demand for Low Impact Development for Three Canadian Cities

Water ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1280
Author(s):  
Sarah Kaykhosravi ◽  
Usman T. Khan ◽  
Mojgan A. Jadidi
Keyword(s):  
Climate Change ◽  
Urban Areas ◽  
Rainfall Intensity ◽  
Low Impact Development ◽  
Flood Management ◽  
Low Permeability ◽  
Comprehensive Understanding ◽  
Rate Of Increase ◽  
Urban Growth Scenarios ◽  
The Impact

Climate change and urbanization are increasing the intensity and frequency of floods in urban areas. Low Impact Development (LID) is a technique which attenuates runoff and manages urban flooding. However, the impact of climate change and urbanization on the demand or need for LID in cities for both current and future conditions is not known. The primary goal of this research was to evaluate the demand for LID under different climate change and urban growth scenarios based on a physical-based geospatial framework called the hydrological-hydraulic index (HHI). To do this, 12 scenarios considering four climate change and three urbanization conditions were developed. The HHI for three cities in Canada (Toronto, Montreal, and Vancouver) were estimated, evaluated, and compared for these scenarios. The results show that both urbanization and climate change increase the demand for LID. The contribution of climate change and urbanization on LID demand, measured using HHI, varies for each city: in Toronto and Montreal, high rainfall intensity and low permeability mean that climate change is dominant, whereas, in Vancouver, both climate change and urbanization have a similar impact on LID demand. Toronto and Montreal also have a higher overall demand for LID and the rate of increase in demand is higher over the study period. The results of this study provide us with a comprehensive understanding of the effect of climate and urbanization on the demand for LID, which can be used for flood management, urban planning, and sustainable development of cities.

scholarly journals Changing climate and its impacts on Assam, Northeast India

2016 ◽  
Vol 2 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Debojyoti Das
Keyword(s):  
Climate Change ◽  
Forced Migration ◽  
Flood Management ◽  
Northeast India ◽  
Sample Survey ◽  
Dependency Ratio ◽  
Social Resilience ◽  
Erosion Risk ◽  
Changing Climate ◽  
The Impact

The paper explores climate change induced hydro hazards and its impact on tribal communities in Majuli (largest river island of Brahmaputra River Basin). The island has been experiencing recurrent floods, erosion, and siltation, which has distressed the socio-economic foundation and livelihood of the Mishing—a indigenous community on Northeast India, leading to out migration from the island. The indicators selected to capture the vulnerability of the island to climate change are dependency ratio; occurrence of natural hazards (floods) and coping methods; income of the household; and livelihood diversification. To gather the quantitative and qualitative data on these parameters the methods was designed to conduct both sample survey of households and focus group discussions. The findings reveal that in the selected villages, the dependency ratio is 4 (dependents): 1 (earning member); average income of the household is low i.e. $ 40/month and is declining as compared to last few years because of frequent floods, erosion and siltation that has decreased farm productivity which is the main source of income. The impact of changing climate and heightened flood and erosion risk to farmlands has been forced migration to cities and neighboring urban centers like Jorhar for stable livelihood. Therefore, we propose that a possible way to enhance social resilience to changing climate and vagaries of monsoon (tropical disturbances) is to promote alternative occupation like eco-tourism as (Majuli is the center ofVaisnavismandSatrasin Northeast India) and invest in adaptive strategies to mitigate flood by incorporating lay and place-based knowledge of the Mishing community in flood management. Also facilitate community’s participation and awareness towards hydro hazards based on flood proof housing focusing on indigenous knowledge.

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