Flood hazard mapping incorporating multiple probability models

Guerriero, Luigi; Ruzza, Giuseppe; Guadagno, Francesco M.; Revellino, Paola

doi:10.1016/j.jhydrol.2020.125020

Cited by 33 publications

(25 citation statements)

References 39 publications

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“…Numerous researches focusing on flooded area mapping, generally based on models or remotelysensed data (De Musso et al, 2018;Guerriero et al, 2018Guerriero et al, , 2020Romanescu et al, 2017;Segura-Beltrán et al, 2016), and on riverbed geomorphic response analysis and mapping (Fuller, 2008;Heritage et al, 2004;Hooke, 2016;Morche et al, 2007;Rinaldi et al, 2016;Thompson & Croke, 2013;Yousefi et al, 2018), were conducted worldwide to investigate high-magnitude floods dynamics. Furthermore, several studies analyzed ground effects triggered by intense rainfalls and floods specifically in mountain and hilly areas (Bartelletti et al, 2017;Borrelli et al, 2015;Cevasco et al, 2012Cevasco et al, , 2015Cevasco et al, , 2017Pepe et al, 2019aPepe et al, , 2019bRago et al, 2017;Santo et al, 2017;Tessitore et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Flood-induced ground effects and flood-water dynamics for hydro-geomorphic hazard assessment: the 21–22 October 2019 extreme flood along the lower Orba River (Alessandria, NW Italy)

2021

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The knowledge of flood-induced ground effects and flood-water dynamics is a crucial issue for hydro-geomorphic hazards assessment and mapping, and thus for river management and land use planning. This paper and the related 1:15,000 map illustrate the lower Orba River (NW Italy) and its adjacent floodplain geomorphic response to the 21-22 October 2019 extreme flood. This was estimated to be a 500-years flood and caused severe damage to cultivated fields, structures, and infrastructures. The research is based on extensive post-flood field surveys, ante-and post-flood GNSS surveys, and aerial photographs interpretation. Intense inchannel sediment mobilization, bank retreats, and channelization structures collapses were surveyed. Furthermore, alluvial gullies, overbank deposits, crevasse splays, and surficialerosion evidences were mapped over the floodplain, along with the flooded area (17.65 km 2 ) and the flood-water features. A specific legend developed for flood-related and anthropogenic elements mapping in a typical lowland agricultural landscape with regulated rivers is proposed.

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Section: Introductionmentioning

confidence: 99%

Flood-induced ground effects and flood-water dynamics for hydro-geomorphic hazard assessment: the 21–22 October 2019 extreme flood along the lower Orba River (Alessandria, NW Italy)

2021

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“…LiDAR datasets were implemented in a new procedure of flood hazard estimation proposed by Guerriero et al [84]. The authors developed algorithms of interpolation of multiple probability models of hydrometric time-series data combined with topography derived from LiDAR data for the production of flood hazard maps.…”

Section: Lidar Dem For Flood Hazard and Flood Risk Mappingmentioning

confidence: 99%

The Use of LiDAR-Derived DEM in Flood Applications: A Review

et al. 2020

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Flood occurrence is increasing due to escalated urbanization and extreme climate change; hence, various studies on this issue and methods of flood monitoring and mapping are also increasing to reduce the severe impacts of flood disasters. The advancement of current technologies such as light detection and ranging (LiDAR) systems facilitated and improved flood applications. In a LiDAR system, a laser emits light that travels to the ground and reflects off objects like buildings and trees. The reflected light energy returns to the sensor, whereby the time interval is recorded. Since the conventional methods cannot produce high-resolution digital elevation model (DEM) data, which results in low accuracy of flood simulation results, LiDAR data are extensively used as an alternative. This review aims to study the potential and the applications of LiDAR-derived DEM in flood studies. It also provides insight into the operating principles of different LiDAR systems, system components, and advantages and disadvantages of each system. This paper discusses several topics relevant to flood studies from a LiDAR-derived DEM perspective. Furthermore, the challenges and future perspectives regarding DEM LiDAR data for flood mapping and assessment are also reviewed. This study demonstrates that LiDAR-derived data are useful in flood risk management, especially in the future assessment of flood-related problems.

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“…Flood hazard maps are indispensable tools for displaying information about hazards, vulnerabilities, and risks in a particular area, and they play a very important role in this process (European Commission, 2007). In recent studies, flood hazard maps have been shown to be a core component of flood risk management for risk assessment and design of mitigation measures in floodprone areas, even on a global scale (Dottori et al, 2016;Guerriero et al, 2020;Thapa et al, 2020;Shadmehri Toosi et al, 2020;Eini et al, 2020). Many recently studies have utilized flood hazard maps in flood risk management strategies (Hussein et al, 2019;Ogato et al, 2020;Guerriero et al, 2020;Gusain et al, 2020;Costabile et al, 2020;Mishra and Sinha, 2020).…”

Section: Introductionmentioning

confidence: 99%

Floodwater impacts on residential areas in floodplain areas along Day River system in emergency situation

Anh¹,

Tabata²,

Hiramatsu³

et al. 2021

Journal of the Faculty of Agriculture, Kyushu University

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Hanoi, the capital of Vietnam, is protected from floods by dike systems for the Red and Day Rivers. In emergency situations resulting from catastrophic floods, floodwater from the Red River is discharged into the Van Coc Lake, which is a regulating reservoir that drains into the Day River system through the Day Weir at the downstream end of the Van Coc Lake. The authors investigated the flood mitigation function of the Van Coc Lake and identified an optimal operation scenario for the lake for the largest recorded flood, which occurred between the 16 th and 27 th of August 1971. However, a comprehensive evaluation of the flood risk level in residential areas within the floodplain areas located along the Day River system to determine an optimal operation scenario has not been conducted. In this study, a two-dimensional depth-integrated hydrodynamic model was employed to investigate flood risk levels in these residential areas when the floodwater level reached 11.0 m, 12.0 m, and 12.72 m (the flood peak) at the Day Weir and at 10 and 30 h after the flood peak, under the optimal operation scenario. The time at which floodwater from the Van Coc Lake reached the Day Weir was referred to as Time-0 in this study and was used to estimate the movement of floodwater. The study area, from the Day Weir to the downstream end, was more than 100 km in length and was divided into three zones: the northern part, designated Zone 1; the central part, designated Zone 2; and the downstream end part, designated Zone 3. The simulation results were used to produce reliable flood susceptibility maps that identify the areas at greatest risk of being impacted by floodwater. At the flood peak time, residential areas in the study area were inundated at levels of 84.00% (9.50 km 2 ) in Zone 1, 71.84% (29.18 km 2 ) in Zone 2, and 98.59% (13.31 km 2 ) in Zone 3. Floodwater needed 75, 87, and 135 h from Time-0 to reach 11.0 m, 12.0 m, and the flood peak at 12.72 m at the Day Weir. The results of this study form a basis for future land planning and the design of risk reduction strategies for the Day River system and serve as a strong warning about the dangers of floodwater throughout the study area.

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Flood hazard mapping incorporating multiple probability models

Cited by 33 publications

References 39 publications

Flood-induced ground effects and flood-water dynamics for hydro-geomorphic hazard assessment: the 21–22 October 2019 extreme flood along the lower Orba River (Alessandria, NW Italy)

Flood-induced ground effects and flood-water dynamics for hydro-geomorphic hazard assessment: the 21–22 October 2019 extreme flood along the lower Orba River (Alessandria, NW Italy)

The Use of LiDAR-Derived DEM in Flood Applications: A Review

Floodwater impacts on residential areas in floodplain areas along Day River system in emergency situation

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