Investigation of multiple flood mitigation strategies for an urban catchment using semi-distributed hydrological modelling

2021 ◽  
Vol 14 (15) ◽  
Author(s):  
Elanchezhiyan Duraisekaran ◽  
Tamilselvi Mohanraj ◽  
Jeciliya Selva Kiruba Samuel ◽  
Sudharsanan Rajagopalan ◽  
Ravikumar Govindasamy
Keyword(s):  
Hydrological Modelling ◽  
Mitigation Strategies ◽  
Flood Mitigation ◽  
Urban Catchment ◽  
Distributed Hydrological Modelling

Alternative climate data sources for distributed hydrological modelling on a daily time step

2010 ◽  
Vol 25 (10) ◽  
pp. 1542-1557 ◽  
Author(s):  
Ashraf El-Sadek ◽  
Max Bleiweiss ◽  
Manoj Shukla ◽  
Steve Guldan ◽  
Alexander Fernald
Keyword(s):  
Hydrological Modelling ◽  
Data Sources ◽  
Climate Data ◽  
Time Step ◽  
Daily Time Step ◽  
Distributed Hydrological Modelling ◽  
Daily Time

scholarly journals Analysis of urban flood using synthetic unit hydrograph (SUH) and flood mitigation strategies along way Halim River: a case study on Seroja street, Tanjung Senang District

2021 ◽  
Vol 331 ◽  
pp. 07015
Author(s):  
Dian Pratiwi ◽  
Arniza Fitri ◽  
Arlina Phelia ◽  
Nabila Annisa Amara Adma ◽  
Kastamto
Keyword(s):  
Mitigation Strategies ◽  
Flood Mitigation ◽  
Trigger Factor ◽  
Urban Flooding ◽  
Unit Hydrograph ◽  
Urban Flood ◽  
Flood Discharge ◽  
Absorption Area ◽  
Synthetic Unit Hydrograph

In the urban area, flooding becomes the most common disaster that has not been resolved until today. The utilization of river border area into housing and lack of absorption area becomes the trigger factor of urban flooding, as what is happening around Way Halim River on Seroja street. In this area, floods often happen during the rainy season, with the latest events recorded on January 21st, 2021. Analysis of flood intensities and discharges can be parameters for the decision-making of flood mitigation strategies. This study aims to analyze the flood discharges along Way Halim River, Seroja street by comparing the flood discharges resulting from three analysis methods of Synthetic Unit Hydrograph (SUH) including Gama I SUH, Nakayasu SUH, and Snyder SUH. Finally, suitable flood mitigation strategies were also proposed in this study based on the flood discharges and rain intensities. The results showed that Nakayasu SUH had the highest peak flood discharge than Snyder SUH and Gama I SUH. Based on the results of the investigation of land suitability; and analysis of rainfall intensities and flood discharges, the proposed flood mitigation in Seroja street is by installing biopore infiltration holes along Seroja street for storing water and reducing the risk of flooding in the area.

Guidance for Human Action Evaluations for External Flood Risk Assessment

2016 ◽  
Author(s):  
Raymond E. Schneider ◽  
Srinivasa Visweswaran ◽  
John Fluehr ◽  
H. Alan Hackerott
Keyword(s):  
Risk Assessment ◽  
Ad Hoc ◽  
Human Action ◽  
Mitigation Strategies ◽  
Flood Mitigation ◽  
Human Reliability Analysis ◽  
Factors Affecting ◽  
Investment Protection ◽  
Performance Shaping Factors ◽  
Flooding Hazards

For many years external flooding hazards have been recognized as significant contributors to plant risk. However, it was not until the events at Fukushima that there was a concerted effort on the part of the utilities to reassess the plant external flood design basis, identify external flood vulnerabilities and take actions to address them. For many plants, resolution of low probability high consequence floods will likely be addressed by a combination of actions involving enhancements to flood protection and hazard mitigation strategies. Over time, as plants decide on which strategies to apply there is an expectation that the most effective way to develop and justify these strategies will involve probabilistic risk assessment (PRA) concepts. The PRA framework is well suited for performing a human reliability analysis (HRA). Within that framework, HRA evaluations focus on operator and plant staff actions taken in response to plant initiating events (e.g., loss of offsite power, etc.). For many external floods, advance warning of an impending external flood event provides the trigger for pre-emptive manual actions to potentially reconfigure the plant through temporary installation of flood barriers. Unlike the post-initiator actions which tend to be more narrowly focused, these pre-emptive actions are taken in a less controlled environment, may be ad hoc, and may potentially be in competition with site investment protection activities, site evacuation, etc. The purpose of this paper is to define the challenges in defining an approach for treating external flood actions, identifying external flood timelines, identifying the manual actions/organizational environment during external flooding scenarios and proposing an integrated strategy for quantifying those actions. The proposed quantification process is rooted in management science concepts for evaluating project reliability. The overall methodology identifies flood significant performance shaping factors, and identifies three (3) factors, namely time available for flood mitigation, proper access to plant site following flood and environmental factors, as having an overarching impact on the performance shaping factors affecting each of the flood mitigation tasks.

NYC Transit Flood Resiliency: Case Studies of Recently Completed Mitigation Strategies

2019 ◽  
Author(s):  
Timothy Savery
Keyword(s):  
New York ◽  
Case Studies ◽  
Hurricane Sandy ◽  
Mitigation Strategies ◽  
Flood Mitigation ◽  
Storm Event ◽  
Design Flood ◽  
Transit Systems ◽  
Flood Depth ◽  
Deployment Time

<p>MTA New York City Transit (NYCT) suffered significant damage from Hurricane Sandy in 2012, and hired Arup to design flood mitigation strategies for various system vulnerabilities.</p><p>Arup developed innovative permanent solutions to mitigate the various system vulnerabilities identified, including working with specialty fabricators to develop products for these specific purposes in order to provide the required protection of up to 14 feet of flood depth.</p><p>These efforts have resulted in innovate, new, purpose driven methods of flood mitigation that were not previously available on the market. These new systems result in dramatically reduced deployment time ahead of a storm event as well as a significant increase in the performance of the mitigation including reduced leakage rates.</p><p>This paper reviews various system vulnerabilities present in transit systems and presents case studies for the various mitigation strategies that were developed.</p>

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