scholarly journals Investigation of the low impact development strategies for highly urbanized area via auto-calibrated Storm Water Management Model (SWMM)

Author(s):  
Ömer Ekmekcioğlu ◽  
Muhammet Yılmaz ◽  
Mehmet Özger ◽  
Fatih Tosunoğlu

Abstract This study aims to investigate the effectiveness of the low impact development (LID) practices on sustainable urban flood storm water management. We applied three LID techniques, i.e. green roof, permeable pavements and bioretention cells, on a highly urbanized watershed in Istanbul, Turkey. The EPA-SWMM was used as a hydrologic-hydraulic model and the model calibration was performed by the well-known Parameter ESTimation (PEST) tool. The rainfall-runoff events occurred between 2012 and 2020. A sensitivity analysis on the parameter selection was applied to reduce the computational cost. The Nash-Sutcliffe efficiency coefficient (NSE) was used as the objective function and it was calculated as 0.809 in the model calibration. The simulations were conducted for six different return periods of a storm event, i.e. 2, 5, 10, 25, 50 and 100-years, in which the synthetic storm event hyetographs were produced by means of the alternating block method. The results revealed that the combination of green roof and permeable pavements have the major impact on both the peak flood reduction and the runoff volume reduction compared to the single LIDs. The maximum runoff reduction percentage was obtained as 56.02% for a 10-years return period of a storm event in the combination scenario.

2021 ◽  
Author(s):  
ARUNA V ◽  
Suja R ◽  
Rajalakshmi C R

Abstract As communities grows, the area covered by rooftops and concreted surfaces increases. Rain water which would have infiltrated, flows across these impermeable surface carrying pollutants along the way. This causes frequent flash floods in urban areas. Effective storm water management is needed for the sustainable development of communities. In this study the runoff generation for a small catchment is quantified and the effectiveness of low impact development (LID) practices (permeable pavements (pp) & vegetative swales) in mitigating the runoff at the source itself is studied using Storm Water Management Model (SWMM). The most influential design storm and the soil type pertaining to the study area were the determining factors for evaluating the impact of LID’s. The steady flow model and Hortons’s infiltration parameters for the soil type in study area were adopted for the analysis. The permeable pavements and swales performed well in reducing the runoff but the swales were less efficient in reducing the runoff, and the runoff reduction potential of permeable pavements and swales are 4.48% and 2.05% respectively. Runoff reduction is more efficient in case of combination of permeable pavements and vegetative swales as LIDs. The percentage reduction in runoff is about 6.05% and the efficiency of the combination type LID is about 17%. The results from simulation show that the low impact development practices are efficient in mimicking the pre-development hydrologic conditions of the landscape to a great extent.


2019 ◽  
Vol 241 ◽  
pp. 118323 ◽  
Author(s):  
Morvarid Latifi ◽  
Gholamreza Rakhshandehroo ◽  
Mohammad Reza Nikoo ◽  
Mojtaba Sadegh

2018 ◽  
Vol 7 (1) ◽  
pp. 7-10
Author(s):  
Vinay Ashok Rangari ◽  
Sriramoju Sai Prashanth

Urban floods are caused due to increase in population density, development of urban infrastructure without paying due consideration to drainage aspects and increase in paved surfaces. Storm water modelling plays an important role in checking issues such as flash floods and urban water-quality problems. The SWMM (Storm Water Management Model) has been an effective tool for simulating floods in urban areas. In this study a SWMM model is developed to analyze drainage network for the campus of National Institute of Technology, Warangal in the city of Warangal, Telangana, India. The model is simulated for one real storm event and 2-year return period of interval 1-hour design storm intensity. Frequency analysis is performed using best fitted distribution i.e., Gumbel’s distribution for different return periods and the frequency values are used for development of IDF (intensity-duration-frequency) curves. Design storm intensity derived from IDF curves for different return periods is used to estimate peak runoff from each sub catchment which is used as input parameter in simulation of runoff in SWMM. GIS methodology is employed for handling spatial data simultaneously. From results, it is observed that some part of campus are commonly affected with flooding, when analysis is performed for two design storms and one day continuous rainfall/precipitation values.


Revista DAE ◽  
2020 ◽  
Vol 68 (227) ◽  
pp. 35-49
Author(s):  
Júlia Baptistella Machado Dutra ◽  
Talita Fernanda das Graças Silva

Mudanças no uso do solo e impermeabilização das superfícies têm aumentado a ocorrência de inundações nas cidades brasileiras. Este trabalho investiga como telhados verdes e reservatórios de lote minimizam inundações urbanas ao reduzir o escoamento superficial e a vazão de pico. A bacia do córrego Engenho Nogueira (Belo Horizonte, MG) foi escolhida como estudo de caso. O Storm Water Management Model foi utilizado para simular três cenários: C0, situação atual; C100 e C50, implantando as técnicas, respectivamente, em 100% e 50% das áreas potenciais. O escoamento superficial na bacia foi reduzido em até 22,3% devido ao bom desempenho dos telhados verdes, com escoamento superficial nulo e volumes drenados até 25,5% inferiores ao volume precipitado. Os reservatórios de lote apresentaram baixo desempenho devido ao volume insuficiente. A vazão de pico no exutório da bacia foi reduzida em no máximo 11,6% (C100, chuva com tempo de retorno de 10 anos e duração de 10 minutos). Palavras-chave: Low Impact Development. Técnicas compensatórias. SWMM. Drenagem urbana.


2016 ◽  
Vol 63 (4) ◽  
pp. 227-236 ◽  
Author(s):  
Muhammad Shafique

AbstractBioretention basins/rain garden is a very suitable low-impact development (LID) practice for storm water management around the globe. By using this practice in urban areas, flash flooding problems can be decreased and the environment of an area can be improved. The concept of bioretention was introduced a few decades ago and has been proven to be the best management practice (BMP) for storm water in urban areas. Due to urbanisation, natural surface areas are converted into hard surfaces such as roads, through which water cannot infiltrate into the ground. Due to this, infiltration decreases and surface run-off increases, which causes depletion of ground water continuously. In this study, we mainly explain the bioretention concept and its function as derived from different studies. This review includes different scientists’ results for the performance of the bioretention system at different locations. A summary of the research findings by different scientists on the performance of bioretention systems is also provided, including the hydrologic and water quality performances. Finally, future work necessary to enhance the performance and widespread use of bioretention systems is also explained.


2013 ◽  
Vol 68 (12) ◽  
pp. 2559-2567 ◽  
Author(s):  
Z. L. Liao ◽  
Y. He ◽  
F. Huang ◽  
S. Wang ◽  
H. Z. Li

Although a commonly applied measure across the United States and Europe for alleviating the negative impacts of urbanization on the hydrological cycle, low impact development (LID) has not been widely used in highly urbanized areas, especially in rapidly urbanizing cities in developing countries like China. In this paper, given five LID practices including Bio-Retention, Infiltration Trench, Porous Pavement, Rain Barrels, and Green Swale, an analysis on LID for highly urbanized areas’ waterlogging control is demonstrated using the example of Caohejing in Shanghai, China. Design storm events and storm water management models are employed to simulate the total waterlogging volume reduction, peak flow rate reduction and runoff coefficient reduction of different scenarios. Cost-effectiveness is calculated for the five practices. The aftermath shows that LID practices can have significant effects on storm water management in a highly urbanized area, and the comparative results reveal that Rain Barrels and Infiltration Trench are the two most suitable cost-effective measures for the study area.


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