scholarly journals Integrating Hydrodynamic and Hydraulic Modeling for Evaluating Future Flood Mitigation in Urban Environments

2015 ◽  
pp. 282-292
Author(s):  
Mahesh Prakash ◽  
James Hilton ◽  
Lalitha Ramachandran
Keyword(s):  
Hydraulic Modeling ◽  
Urban Environments ◽  
Flood Mitigation

scholarly journals Using 2D HEC-RAS Modeling and Embankment Dam Break Scenario for Assessing the Flood Control Capacity of a Multi-Reservoir System (NE Romania)

Water ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 57
Author(s):  
Andrei Urzică ◽  
Alin Mihu-Pintilie ◽  
Cristian Constantin Stoleriu ◽  
Cătălin Ioan Cîmpianu ◽  
Elena Huţanu ◽  
...  
Keyword(s):  
Flood Control ◽  
Flood Hazard ◽  
Hydraulic Modeling ◽  
Dam Break ◽  
Recurrence Interval ◽  
Flood Mitigation ◽  
Dam Failure ◽  
Inflow Rate ◽  
Embankment Dam ◽  
Reservoir System

Using hydraulic modeling techniques (e.g., one-dimensional/two-dimensional (1D/2D) hydraulic modeling, dam break scenarios) for extracting the flood settings is an important aspect of any action plan for dam failure (APDF) and flood mitigation strategy. For example, the flood hydraulic models and dam break scenario generated based on light detection and ranging (LiDAR)-derived digital elevation models (DEMs) and processed in the dedicated geographic information systems (GIS) and hydraulic modeling software (e.g., HEC-RAS—Hydrologic Engineering Center River Analysis System, developed by USACE HEC, Davis, CA, USA) can improve the flood hazard maps in case of potentially embankment dam failure. In this study, we develop a small-scale conceptual approach using 2D HEC-RAS software according to the three embankment dam break scenarios, LiDAR data (0.5 m spatial resolution), and 2D hydraulic modeling for the Başeu multi-reservoir system which belongs to the Başeu River (NE Romania) including R1—Cal Alb reservoir, R2—Movileni reservoirs, R3—Tătărăşeni reservoirs, R4—Negreni reservoirs, and R5—Hăneşti reservoirs. In order to test the flood control capacity of the Bașeu multi-reservoir system, the Cal Alb (R1) dam break scenario (piping failure) was taken into account. Three 2D stream flow modeling configurations based on R1 inflow rate with a 1% (100 year), 0.5% (500 year), and 0.1% (1000 year) recurrence interval and the water volume which can be accumulated with that specific inflow rate (1% = 10.19 × 106 m3; 0.5% = 12.39 × 106 m3; 0.1% = 17.35 × 106 m3) were computed. The potential flood wave impact was achieved on the basis of different flood severity maps (e.g., flood extent, flood depth, flood velocity, flood hazard) generated for each recurrence interval scenario and highlighted within the built-up area of 27 settlements (S1–S27) located downstream of R1. The results showed that the multi-reservoir system of Bașeu River has an important role in flood mitigation and contributes to the APDF in the context of climate change and the intensification of hydrological hazard manifestation in northeastern Romania.

scholarly journals Assessing Flood Mitigation Alternatives in Brezovička Village in Slovakia

2013 ◽  
Vol 8 (1) ◽  
pp. 97-106 ◽  
Author(s):  
Lenka Zvijáková ◽  
Martina Zeleňáková
Keyword(s):  
Environmental Impact ◽  
Urban Environments ◽  
Decision Processes ◽  
Flood Mitigation ◽  
Mitigation Measures ◽  
Analysis Method ◽  
New Paradigm ◽  
Extreme Rain ◽  
Increasing Demand ◽  
Rain Events

Abstract Flooding due to extreme rain events in urban environments is a problem and a growing concern. There is an increasing demand for a new paradigm to improve flood-mitigation decision processes that calls for riskreduction strategies at several levels. Therefore is a challenge in assessing and comparing different flood mitigation measures. The aim of this paper is to explore a new method to improve an environmental impact assessment of flood-mitigation measures in decision processes by risk analysis method.

Flood risk and water resources management with nature-based solutions on Florence city environment

2020 ◽  
Author(s):  
Tommaso Pacetti ◽  
Matteo Pampaloni ◽  
Giulio Castelli ◽  
Enrica Caporali ◽  
Elena Bresci ◽  
...  
Keyword(s):  
Water Resources ◽  
Water Resources Management ◽  
Flood Risk ◽  
Hydraulic Modeling ◽  
Urban Environments ◽  
Evaluation Methodology ◽  
Resources Management ◽  
Innovative Strategies ◽  
City Environment ◽  
Definition Of

<p><span>Increasing urbanization, evolving socio-economic scenarios and the impacts of climate change require innovative strategies to adapt urban and peri-urban environments, making them more resilient and sustainable. In this context, Nature Based Solutions (NBS), i.e. actions inspired or supported by nature, can be designed to adapt and provide integrated responses to the environmental, social and economic future challenges.</span></p><p><span>The FLORENCE (FLOod risk and water Resources management with Nature based solutions on City Environment) project evaluates the possibility of including NBS as an innovative tool for the management of the territory of the City of Florence (Firenze), Italy. The project develops a quantitative evaluation methodology that clarifies the benefits and co-benefits of NBS, highlighting the limitations and exploring the possible synergies with existing infrastructures.</span></p><p><span>Starting from the existing literature on the NBS siting, a set of parameters to be considered in order to map Ecosystem Services (ES) priority areas (main functions and co-benefits) is derived. This analysis is then coupled with the identification of the constraints (regulatory, urban planning, economic, environmental, social) which determine the boundary conditions for the inclusion of NBS in the Florence city urban environment. Once the most suitable implementation areas of NBS are identified, the hydraulic modeling of multiple NBS implementation scenarios using EPA SWMM is implemented. This allows the definition of the scenario that best respond to the city's green development needs and that maximize the production of ES.</span></p>

scholarly journals Using High-Density LiDAR Data and 2D Streamflow Hydraulic Modeling to Improve Urban Flood Hazard Maps: A HEC-RAS Multi-Scenario Approach

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1832 ◽  
Author(s):  
Alin Mihu-Pintilie ◽  
Cătălin Ioan Cîmpianu ◽  
Cristian Constantin Stoleriu ◽  
Martín Núñez Pérez ◽  
Larisa Elena Paveluc
Keyword(s):  
Urban Areas ◽  
Large Scale ◽  
Flood Hazard ◽  
Hydraulic Modeling ◽  
Flood Mitigation ◽  
Small Scale ◽  
Lidar Data ◽  
Hazard Maps ◽  
Urban Flood ◽  
Flood Hazard Maps

The ability to extract streamflow hydraulic settings using geoinformatic techniques, especially in high populated territories like urban and peri-urban areas, is an important aspect of any disaster management plan and flood mitigation effort. 1D and 2D hydraulic models, generated based on DEMs with high accuracy (e.g., Light Detection and Ranging (LiDAR)) and processed in geographic information systems (GIS) modeling software (e.g., HEC-RAS), can improve urban flood hazard maps. In this study, we present a small-scale conceptual approach using HEC-RAS multi-scenario methodology based on remote sensing (RS), LiDAR data, and 2D hydraulic modeling for the urban and peri-urban area of Bacău City (Bistriţa River, NE Romania). In order to test the flood mitigation capacity of Bacău 1 reservoir (rB1) and Bacău 2 reservoir (rB2), four 2D streamflow hydraulic scenarios (s1–s4) based on average discharge and calculated discharge (s1–s4) data for rB1 spillway gate (Sw1) and for its hydro-power plant (H-pp) were computed. Compared with the large-scale flood hazard data provided by regional authorities, the 2D HEC-RAS multi-scenario provided a more realistic perspective about the possible flood threats in the study area and has shown to be a valuable asset in the improvement process of the official flood hazard maps.

scholarly journals Modelagem Bidimensional para a Verificação Hidráulica da Canalização de um Trecho do Rio Fragoso em Olinda (Pernambuco, Brasil)

2020 ◽  
Vol 13 (6) ◽  
pp. 2963
Author(s):  
Gastão Cerquinha da Fonseca Neto ◽  
Marcos Antonio Barbosa da Silva Junior ◽  
Arivânia Bandeira Rodrigues ◽  
Alfredo Ribeiro Neto ◽  
Jaime Joaquim da Silva Pereira Cabral
Keyword(s):  
Urban Areas ◽  
Hydrological Modeling ◽  
Hydraulic Modeling ◽  
Urban Environments ◽  
Mitigation Measures ◽  
Natural Environments ◽  
High Resolution Data ◽  
Marginal Areas ◽  
The Government ◽  
Analysis System

O processo de densificação nas cidades provoca a perda de ambientes naturais, consequentemente reduz as áreas permeáveis, ampliando os fenômenos das inundações urbanas. As medidas mitigadoras geralmente envolvem elevados custos e nem sempre são confiáveis, devido às incertezas de projeto e variáveis naturais de difícil controle e quantificação, principalmente relacionadas às mudanças climáticas. Nesse cenário, a bacia do rio Fragoso, localizada em sua maior parte na cidade costeira de Olinda, registrou recentemente inundações que afetaram extensas áreas, provocando o poder público a realizar obras de canalização e alargamento da calha do rio. Assim, este trabalho objetiva avaliar a confiabilidade de medidas estruturais implementadas em ambientes urbanos costeiros e de baixa elevação, sujeitos às variações da maré. Para isso, foram utilizados os softwares: HEC-GeoHMS para processamento dos dados geoespaciais de topografia, com dados de alta resolução; HEC-HMS 4.2.1 para modelagem hidrológica; e HEC-RAS 5.0.3 para modelagem hidráulica bidimensional, com representação de manchas de inundação através da ferramenta RAS Mapper. Foi simulado o evento chuvoso de 30 de maio de 2016 para dois cenários: o atual, nas condições naturais do rio; e o futuro, com a obra de canalização concluída. Os resultados mostraram que a intervenção seria hidraulicamente satisfatória, permitiria o escoamento das vazões, conseguiria reduzir cerca de 42,32% das áreas urbanas inundadas, mas não evitaria o alagamento de áreas marginais que são naturalmente muito baixas. Bidimensional Modeling for the Hydraulic Verification of the Channeling of a Stretch of the Fragoso river in Olinda (Pernambuco, Brazil). A B S T R A C TThe densification process in cities causes the loss of natural environments, consequently reducing the permeable areas, increasing the phenomena of urban floods. Mitigation measures generally involve high costs and are not always reliable, due to uncertainties in the design and natural variables that are difficult to control and quantify, mainly related to climate change. In this scenario, the Fragoso River basin, located mostly in the coastal city of Olinda, recently registered floods that affected extensive areas, causing the government to carry out canalization and widening the river channel. Thus, this work aims to evaluate the reliability of structural measures implemented in coastal and low elevation urban environments, subject to tidal variations. For this, the following softwares were used: HEC-GeoHMS for processing geospatial topography data, with high resolution data; HEC-HMS 4.2.1 for hydrological modeling; and HEC-RAS 5.0.3 for two-dimensional hydraulic modeling, with representation of flood spots through the RAS Mapper tool. The rainy event of May 30, 2016 was simulated for two scenarios: the current one, in the natural conditions of the river; and the future, with the enlargement and channeling work designed. The results showed that the intervention would be hydraulically satisfactory, would allow the flow of flows, would reduce about 42.32% of the flooded urban areas, but would not prevent the flooding of marginal areas that are naturally very low.Keywords: flood; macrodrainage, Hydrologic Modeling System, River Analysis System.

The influence of natural and urban environments on attentional processing of emotional stimuli

2014 ◽  
Author(s):  
Chrono Nu ◽  
Katie Mullin ◽  
Hailey Edwards ◽  
Kailey Kornhauser ◽  
Russell Costa ◽  
...  
Keyword(s):  
Urban Environments ◽  
Emotional Stimuli ◽  
Attentional Processing

Analyzing Pump Energy through Hydraulic Modeling

2015 ◽  
Author(s):  
Ron Miller ◽  
Tracey Liberi ◽  
John Scioscia
Keyword(s):  
Pump Energy ◽  
Hydraulic Modeling

Minimetrò in Perugia as leverage for urban regeneration

TERRITORIO ◽  
2020 ◽  
pp. 148-163
Author(s):  
Luca Fondacci
Keyword(s):  
Urban Regeneration ◽  
Urban Environments ◽  
Low Carbon ◽  
Sustainable Mobility ◽  
Field Surveys ◽  
Peripheral Area ◽  
Alternative Means ◽  
Considerable Impact ◽  
The City ◽  
Historical Centre

In the 1970s, the fragile historical centre of the city of Perugia was a key area where the binomial of sustainable mobility and urban regeneration was developed and applied. At the turn of the xxi century, the low carbon automatic people-mover Minimetrò broadened that application from the city's historical centre to the outskirts, promoting the enhancement of several urban environments. This paper is the outcome of an investigation of original sources, field surveys and direct interviews, which addresses the Minimetrò as the backbone of a wide regeneration process which has had a considerable impact on the economic development of a peripheral area of the city which was previously devoid of any clear urban sense. The conclusion proposes some solutions to improve the nature of the Minimetrò as an experimental alternative means of transport.

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