scholarly journals AN OPTIMAL DESIGN FRAMEWORK OF A FLOOD CONTROL SYSTEM INCLUDING IN-FLOODPLAIN COUNTERMEASURES BASED ON DISTRIBUTED RISK ASSESSMENT —APPLICATION TO AN ACTUAL RIVER BASIN—

2008 ◽  
Vol 64 (1) ◽  
pp. 13-23
Author(s):  
Tomoharu HORI ◽  
Seiji FURUKAWA ◽  
Akira FUJITA ◽  
Kenji INAZU ◽  
Shuichi IKEBUCHI
Keyword(s):  
Risk Assessment ◽  
Control System ◽  
Optimal Design ◽  
River Basin ◽  
Flood Control ◽  
Design Framework

scholarly journals Risk assessment of multireservoir joint flood control system under multiple uncertainties

2021 ◽  
Author(s):  
Quansen Wang ◽  
Jianzhong Zhou ◽  
Ling Dai ◽  
Kangdi Huang ◽  
Gang Zha
Keyword(s):  
Risk Assessment ◽  
Control System ◽  
Flood Control ◽  
Multiple Uncertainties

1D and 2D Coupled Numerical Model for Flood Control in Middle Reach of Huaihe River

2013 ◽  
Vol 275-277 ◽  
pp. 2659-2668
Author(s):  
Zhen Kun Ma ◽  
Zi Wu Fan ◽  
Ming Zhang ◽  
Yi Lu Su ◽  
Zhi Ling Sun
Keyword(s):  
Numerical Simulation ◽  
Control System ◽  
River Basin ◽  
Flood Control ◽  
Flood Forecast ◽  
Huaihe River Basin ◽  
Middle Reach ◽  
Huaihe River ◽  
Flood Regulation ◽  
The Huaihe River

The core technique of flood forecast and pre-warning of a river basin is the numerical simulation of flood process in a complicated flood control system. According to the structural features, flood features, and flood process mechanism of a large and complicated flood control system, a 1D and 2D coupled numerical simulation model was established. The 1D model was used for the trunk river and main branches, and the 2D model was used for flood districts. The coupled 1D and 2D was used to simulate the flood regulation and process in rivers, lakes, flood districts, and floodways. A case study was conducted in the section from the Wangjiaba to Bengbu floodgates in the middle reach of the Huaihe River. The coupled model was employed to synchronously simulate the branch rivers and trunk flood of the river basin and to improve the accuracy of flood simulation, flood forecast, and regulation of the river basin. The parameters of the model for simulating the flood process of the Huaihe River Basin in 2003 were calculated and verified, and the flood process in 2007 was demonstrated. The simulated results show that the flood regulation and process can be accurately simulated by the proposed numerical model, and the accuracy requirements can be satisfied. Finally, the model was applied to the effect analysis of a four-grade emergency flood control plan in the Huaihe River Basin.

scholarly journals AN ALTERNATIVE FOR FLOOD CONTROL IN THE ICARAÍ RIVER BASIN, NITERÓI CITY, RIO DE JANEIRO, BRAZIL

Engevista ◽  
2013 ◽  
Vol 16 (4) ◽  
pp. 292
Author(s):  
Ivan Aurélio Fortuna Kalil de Faria ◽  
Gustavo Carneiro de Noronha ◽  
Mônica De Aquino G. Massera da Hora
Keyword(s):  
Control System ◽  
River Basin ◽  
Rio De Janeiro ◽  
Flood Control ◽  
Peak Discharge ◽  
Flood Routing ◽  
Storm Water ◽  
Reservoir Capacity ◽  
Design Storm ◽  
Janeiro State

This paper demonstrates that it is possible to implement a flood control system (called “piscinão”) in Niterói city, located in Rio de Janeiro State, Brazil composed by a reservoir that retains temporally the storm water. The recommended design storm equation and flood routing were applied in order to design the reservoir capacity. The results indicate that it is feasible to implement such solution, reducing more than two thirds of the peak discharge downstream, thus mitigating the damages caused by flood in Niterói city.

scholarly journals Fitoplâncton como Bioindicador de Eventos Extremos na Bacia do Rio Una, Pernambuco, Brasil (Phytoplankton as Bioindicator of Extreme Events in River Basin Una, Pernambuco, Brazil)

2013 ◽  
Vol 6 (4) ◽  
pp. 697 ◽  
Author(s):  
Ariane Silva Cardoso ◽  
Silvio Mario Pereira da Silva Filho ◽  
Anthony Epifanio Alves ◽  
Cacilda Michele Cardoso Rocha ◽  
Maristela Casé Costa Cunha
Keyword(s):  
Water Quality ◽  
Population Dynamics ◽  
Control System ◽  
Environmental Factors ◽  
River Basin ◽  
Flood Control ◽  
Frequency Of Occurrence ◽  
Check Dams ◽  
Transitional Environment ◽  
The Government

A Bacia do Rio Uma é uma das Bacias Hidrográficas mais importantes do Estado de Pernambuco, e vem enfrentando desastres causados por cheias. Em resposta as últimas enchentes ocorridas no Estado, o Governo de Pernambuco desenvolveu um Sistema de Controle de Cheias, com uma programação para o Rio Una, de construção de quatro barragens de contenção, represamento e regularização de abastecimento de água nas cidades circundantes. A qualidade da água após a transição de um ambiente lótico para lêntico poderá ser alterada e dependerá de diversos fatores ambientais. O fitoplâncton responde com boa fidelidade a essas mudanças. Nas bacias estudadas, foram identificados 45 táxons infragenéricos de organismos fitoplanctônicos pertencentes ao grupo das Ochorophyta (40%), Chlorophyta (20%), Charophyta (20%), Cyanophyta (13%) e Euglenophyta (7%). Sendo a divisão Ochrophyta mais representativa com relação à riqueza e frequência de ocorrência. Não ocorrem valores expressivos de densidade nas amostragens. Assim, estudar a composição e a dinâmica populacional da comunidade fitoplanctônica é de fundamental importância para o entendimento da sustentação e conservação desse ecossistema, sobretudo por se tratar de um ambiente em transição e pela carência de estudos na região. ABSTRACT A River Basin is one of the most important Watershed State of Pernambuco, and this has been facing disasters caused by floods. In response to the recent floods occurred in the State, the Government of Pernambuco developed a Flood Control System, with a schedule for the Rio Una, four-building check dams, impoundment and regulation of water supply in the surrounding towns. The water quality after the transition from a lotic to lentic may change and depend on various environmental factors. Phytoplankton responds with good fidelity to these changes. Basins studied, 46 were identified taxa of phytoplankton organisms belonging to the group Ochorophyta (40%), Chlorophyta (20%), Charophyta (20%), Cyanophyta (13%) and Euglenophyta (7%). As the division Ochrophyta more representative with respect to wealth and frequency of occurrence. No significant values occur in sampling density. Thus, studying the composition and population dynamics of phytoplankton is of fundamental importance for the understanding and support of the conservation of this ecosystem, mainly because it is a transitional environment and the lack of studies in the region. Keywords: Phytoplankton, Una River basin, impounding water.

scholarly journals Risk Assessment and Decision-Making Based on Mean-CVaR-Entropy for Flood Control Operation of Large Scale Reservoirs

Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 649 ◽  
Author(s):  
Quansen Wang ◽  
Jianzhong Zhou ◽  
Kangdi Huang ◽  
Ling Dai ◽  
Gang Zha ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Decision Making ◽  
Flood Control ◽  
Large Scale ◽  
Yangtze River Basin ◽  
Mean Value ◽  
Operation System ◽  
Control Operation ◽  
Flood Control Operation ◽  
Reservoir Flood Control Operation

The risk inevitably exists in the process of flood control operation and decision-making of reservoir group, due to the hydrologic and hydraulic uncertain factors. In this study different stochastic simulation methods were applied to simulate these uncertainties in multi-reservoir flood control operation, and the risk caused by different uncertainties was evaluated from the mean value, extreme value and discrete degree of reservoir occupied storage capacity under uncertain conditions. In order to solve the conflict between risk assessment indexes and evaluate the comprehensive risk of different reservoirs in flood control operation schemes, the subjective weight and objective weight were used to construct the comprehensive risk assessment index, and the improved Mahalanobis distance TOPSIS method was used to select the optimal flood control operation scheme. The proposed method was applied to the flood control operation system in the mainstream and its tributaries of upper reaches of the Yangtze River basin, and 14 cascade reservoirs were selected as a case study. The results indicate that proposed method can evaluate the risk of multi-reservoir flood control operation from all perspectives and provide a new method for multi-criteria decision-making of reservoir flood control operation, and it breaks the limitation of the traditional risk analysis method which only evaluated by risk rate and cannot evaluate the risk of the multi-reservoir flood control operation system.

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