SCS-CN Based Quantification of Potential of Rooftop Catchments and Computation of ASRC for Rainwater Harvesting

Singh, Pushpendra Kumar; Yaduvanshi, B. K.; Patel, S.; Ray, Saswati

doi:10.1007/s11269-013-0267-6

Cited by 41 publications

(12 citation statements)

References 35 publications

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“…Such systems reduce the localised impacts of pluvial events by removing water from the wider urban cycle. The most common mechanism of collecting rainfall is the establishment of "roof catchments", which collect rainfall into conventional gutters that is then piped into storage tanks near buildings (Singh et al 2013). Increasingly, incentives are being developed at regional and national scales worldwide, with many new developments being equipped with rainwater harvesting technology (Herrmann andSchmida 1999, Domenech andSauri 2011).…”

Section: Local Management Of Pluvial Flood Riskmentioning

confidence: 99%

Impacts of urbanisation on hydrological and water quality dynamics, and urban water management: a review

McGrane

2016

Hydrological Sciences Journal

629

230

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As urban space continues to expand to accommodate a growing global population, there remains a real need to quantify and qualify the impacts of urban space on natural processes. The expansion of global urban areas has resulted in marked alterations to natural processes, environmental quality and natural resource consumption. The urban landscape influences infiltration and evapotranspiration, complicating our capacity to quantify their dynamics across a heterogeneous landscape at contrasting scales. Impervious surfaces exacerbate runoff processes, whereas runoff from pervious areas remains uncertain owing to variable infiltration dynamics. Increasingly, the link between the natural hydrological cycle and engineered water cycle has been made, realising the contributions from leaky infrastructure to recharge and runoff rates. Urban landscapes are host to a suite of contaminants that impact on water quality, where novel contaminants continue to pose new challenges to monitoring and treatment regimes. This review seeks to assess the major advances and remaining challenges that remain within the growing field of urban hydrology. ARTICLE HISTORY

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Section: Local Management Of Pluvial Flood Riskmentioning

confidence: 99%

Impacts of urbanisation on hydrological and water quality dynamics, and urban water management: a review

McGrane

2016

Hydrological Sciences Journal

629

230

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“…The initial abstraction coefficient is a constant, usually defined as 0.2 (El-Hames, 2012; Kadam et al, 2012;Singh et al, 2013), and CN is a dimensionless parameter, ranging from 0 to 100. The US Natural Resources Conservation Service (NRCS) has developed CN values for various land-cover categories based on their hydrologic characteristics.…”

Section: Model Preparationmentioning

confidence: 99%

Potential reduction in urban runoff by green spaces in Beijing: A scenario analysis

Yao

Chen

Wei

et al. 2015

Urban Forestry & Urban Greening

119

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a b s t r a c tUrban green space provides multiple ecological benefits, among which the reduction of rainfall runoff is important for sustainable urban development, particularly for cities experiencing severe flooding and water hazards. However, the effectiveness of urban green space in mitigating runoff has not been fully determined. We evaluated potential reductions in surface runoff associated with urban green space in central Beijing under a greening scenario using the Soil Conservation Service Curve Number method. The results show that urban green space offers significant potential for runoff mitigation. In 2012, a total of 97.9 million m 3 of excess surface runoff was retained by urban green space; adding nearly 11% more tree canopy was projected to increase runoff retention by >30%, contributing to considerable benefits of urban rainwater regulation. At a more detailed scale, there were apparent internal variations. Urban function zones with >70% developed land showed less mitigation of runoff, while green zones (vegetation >60%), which occupied only 15.54% of the total area, contributed 31.07% of runoff reduction. Runoff reduction by urban green space, however, is influenced by many factors, such as rainfall, soil condition, and urban morphology. In regulating urban runoff, therefore, the priorities and integrating adaptive approaches to urban greening should be combined with compensatory and complementary measures.

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“…Várias metodologias e modelos foram desenvolvidos para quantificar o potencial de captação do telhado (ALADENOLA; ADEBOYE, 2010; ISHAKU; MAJID; JOHAR, 2012), os critérios de seleção, a relação custo/benefício (KHASTAGIR; JAYASURIYA, 2011), o dimensionamento de reservatórios (GHISI, DOI: 10.1590Oliveira, J.N. ;Libânio, M. 2010; GHISI; SCHONDERMARK, 2013), os impactos na saúde dos consumidores (HEYWORTH et al, 2006;MARCYNUK et al, 2009;STEWART et al, 2016) e o desempenho em geral (SINGH et al, 2013).…”

Section: Introdução E Relevânciaunclassified

Avaliação quantitativa e qualitativa do emprego de paredes como nova perspectiva para captação de água de chuva

Marangoni

Oliveira

Libânio

2019

Eng. Sanit. Ambient.

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RESUMO A poluição dos mananciais de abastecimento e a necessidade de se buscar água, cada vez mais distante, agregam à água tratada alto valor monetário, sendo a captação e a utilização da água de chuva uma forma de reduzir custos. Nos grandes centros urbanos, ocorre a formação de ilhas de calor, as quais favorecem a ocorrência de chuvas convectivas dotadas de ventos. Além disso, houve a verticalização das edificações, resultando em área lateral maior, se comparada com a do telhado, tornando a captação de água pluvial em paredes uma alternativa promissora. O objetivo deste trabalho foi verificar a quantidade e a qualidade da água captada em uma parede de vidro e outra de argamassa pintada na cidade de Ilha Solteira, São Paulo. A média de incidência da chuva foi de 48,7% na parede de vidro e 33,3% na de argamassa pintada, tendo cada anteparo uma eficiência de captação média de 16,21 e 8,27%, respectivamente. Os parâmetros de qualidade da água (pH, turbidez, condutividade elétrica e alcalinidade) apresentaram diminuição com o passar dos milímetros escoados. A água proveniente na parede de vidro não necessita de volume de descarte, de acordo com a Norma Brasileira (NBR) nº 15527/07. Não foi encontrada relação entre a intensidade da chuva e a qualidade da água, bem como com a eficiência de captação. Porém, quando ocorreram precipitações em dias consecutivos a qualidade da água foi superior, confrontada com a ocorrência de períodos secos.

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SCS-CN Based Quantification of Potential of Rooftop Catchments and Computation of ASRC for Rainwater Harvesting

Cited by 41 publications

References 35 publications

Impacts of urbanisation on hydrological and water quality dynamics, and urban water management: a review

Impacts of urbanisation on hydrological and water quality dynamics, and urban water management: a review

Potential reduction in urban runoff by green spaces in Beijing: A scenario analysis

Avaliação quantitativa e qualitativa do emprego de paredes como nova perspectiva para captação de água de chuva

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