Development of flood inundation extent libraries over a range of potential flood levels: a practical framework for quick flood response

Bhatt, C. M.; Rao, G. Srinivasa; Diwakar, P. G.; Dadhwal, V. K.

doi:10.1080/19475705.2016.1220025

Cited by 41 publications

(19 citation statements)

References 25 publications

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“…Rescue services for boating-related incidents have been found elsewhere [ 59 ] to help reduce drowning and these services are often used during times of disaster [ 60 ]. Agencies, such as the Philippine Coast Guard (PCG), Maritime Industry Authority (MARINA), and the Philippine National Police (PNP), have a very big role in providing rescue services, thereby contributing to the reduction of drowning incidents.…”

Section: Discussionmentioning

confidence: 99%

Preventing Child Drowning in the Philippines: The Need to Address the Determinants of Health

et al. 2021

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Drowning is a public health issue in the Philippines, with children at significantly increased risk. Determinants of health (DoH) such as education, socio-economic status, ethnicity, and urbanization are factors that impact drowning risk. As drowning is a multisectoral issue, a national drowning prevention plan can drive collaboration with relevant stakeholders. This study reports trends in unintentional child (0–14 years) drowning in the Philippines (incidence, rates, and trends over time for fatal and non-fatal (years lived with a disability (YLDs) and disability adjusted life years (DALYs) from 2008–2017 and conducts an analysis of the Philippines’ Multisector Action Plan (MSAP) on Drowning Prevention. From 2008–2017, 27,928 (95%UI [Uncertainty Interval]: 22,794–33,828) children aged 0–14 years died from drowning (52.7% aged 5–14 years old). Rates of drowning have declined among both age groups, with greater reductions seen among 0–4 year olds (y = −0.3368x + 13.035; R2 = 0.9588). The MSAP has 12 child drowning-specific activities and 20 activities were identified where DoH will need to be considered during development and implementation. The MSAP activities, and work done to prevent drowning more generally, must consider DoH such as education, urbanization, water and sanitation health, and safe water transportation. A national drowning surveillance system and investment in research in the Philippines are recommended.

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Section: Discussionmentioning

confidence: 99%

Preventing Child Drowning in the Philippines: The Need to Address the Determinants of Health

et al. 2021

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“…The shallow water equations can be solved using the 2D Diffusion Wave computational method, derived from the full 2D Saint Venant Full Momentum equation, on the assumption that the inertial terms can be neglected [29]. The simplified set of equations, defined in (5), (6), (7), and (8), makes the simulation faster and numerically more stable even with wider time steps and spatial discretization.…”

Section: Main Equationsmentioning

confidence: 99%

“…In order to prevent and mitigate casualties and economic losses, the EU Floods Directive clearly states that flood risk management plans should take into account flood forecasts and Early Warning Systems (EWS) built in a way that they are able to consider the characteristics of a river basin or sub-basin [5,6]. Thus, researchers and engineers have been extensively working on the development of cost-effective and rapid methods in the last decades [7].…”

Section: Introductionmentioning

confidence: 99%

A 2D Real-Time Flood Forecast Framework Based on a Hybrid Historical and Synthetic Runoff Database

Crotti

Leandro

Bhola

2019

Water

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Operational real-time flood forecast is often done on the prediction of discharges at specific gauges using hydrological models. Hydrodynamic models, which can produce inundation maps, are computationally demanding and often cannot be used directly for that purpose. The FloodEvac framework has been developed in order to enable 2D flood inundations map to be forecasted at real-time. The framework is based on a database of pre-recorded synthetic events. In this paper, the framework is improved by generating a database based on rescaled historical river discharge events. This historical database includes a wider variety of runoff curves, including non-Gaussian and multi-peak shapes that better reflect the characteristics and the behavior of the natural streams. Hence, a hybrid approach is proposed by joining the historical and the existing synthetic database. The increased number of scenarios in the hybrid database allows reliable predictions, thus improving the robustness and applicability of real-time flood forecasts.

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“…The accuracy of the simulated flood maps was evaluated using the Critical Success Index (CSI), which is frequently used in estimating the accuracy of flood forecasts [58][59][60][61][62]. In particular the following indices were derived: Probability of Detection (POD, shows what flood fraction of the observed events was correctly simulated), False Alarm Ratio (FAR, shows what dry fraction of the flood event was incorrectly simulated as flooded) and Critical Success Index (CSI, is an indication of the goodness of fit between the simulated and observed flood).…”

Section: Performance Indicesmentioning

confidence: 99%

Flood Inundation Mapping of the Sparsely Gauged Large-Scale Brahmaputra Basin Using Remote Sensing Products

2019

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Sustainable water management is one of the important priorities set out in the Sustainable Development Goals (SDGs) of the United Nations, which calls for efficient use of natural resources. Efficient water management nowadays depends a lot upon simulation models. However, the availability of limited hydro-meteorological data together with limited data sharing practices prohibits simulation modelling and consequently efficient flood risk management of sparsely gauged basins. Advances in remote sensing has significantly contributed to carrying out hydrological studies in ungauged or sparsely gauged basins. In particular, the global datasets of remote sensing observations (e.g., rainfall, evaporation, temperature, land use, terrain, etc.) allow to develop hydrological and hydraulic models of sparsely gauged catchments. In this research, we have considered large scale hydrological and hydraulic modelling, using freely available global datasets, of the sparsely gauged trans-boundary Brahmaputra basin, which has an enormous potential in terms of agriculture, hydropower, water supplies and other utilities. A semi-distributed conceptual hydrological model was developed using HEC-HMS (Hydrologic Modelling System from Hydrologic Engineering Centre). Rainfall estimates from Tropical Rainfall Measuring Mission (TRMM) was compared with limited gauge data and used in the simulation. The Nash Sutcliffe coefficient of the model with the uncorrected rainfall data in calibration and validation were 0.75 and 0.61 respectively whereas the similar values with the corrected rainfall data were 0.81 and 0.74. The output of the hydrological model was used as a boundary condition and lateral inflow to the hydraulic model. Modelling results obtained using uncorrected and corrected remotely sensed products of rainfall were compared with the discharge values at the basin outlet (Bahadurabad) and with altimetry data from Jason-2 satellite. The simulated flood inundation maps of the lower part of the Brahmaputra basin showed reasonably good match in terms of the probability of detection, success ratio and critical success index. Overall, this study demonstrated that reliable and robust results can be obtained in both hydrological and hydraulic modelling using remote sensing data as the only input to large scale and sparsely gauged basins.

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Development of flood inundation extent libraries over a range of potential flood levels: a practical framework for quick flood response

Cited by 41 publications

References 25 publications

Preventing Child Drowning in the Philippines: The Need to Address the Determinants of Health

Preventing Child Drowning in the Philippines: The Need to Address the Determinants of Health

A 2D Real-Time Flood Forecast Framework Based on a Hybrid Historical and Synthetic Runoff Database

Flood Inundation Mapping of the Sparsely Gauged Large-Scale Brahmaputra Basin Using Remote Sensing Products

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