A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The role of rainwater harvesting in urban stormwater runoff in the semiarid region of Brazil
Rainwater Harvesting System (RWHS) can play a multipurpose role, contributing to the management of rainwater runoff, in addition to the water supply. This article assessed the potential reduction in stormwater runoff by adopting small-scale RWHS in the Brazilian semiarid region based on the Curve-Number (CN). RWHS could minimize runoff in frequency and volume, leading the built environment to perform closer to the land’s natural conditions. Before urbanization, the region had a CN of 76. In post urbanization, a case study of multiple houses showed that the adoption of RWHS could reduce the CN from 86 to 80. A reasonable design (0.5 demand fraction and 2000 L tank capacity) could minimize runoff volume by 34% and frequency of occurrence by 66%. Even RWHS with a minimal design, i.e. small tank capacity and low demand, might contribute to the safety of people, resilience, and sustainability of the city’s infrastructure.
The role of rainwater harvesting in urban stormwater runoff in the semiarid region of Brazil
Rainwater Harvesting System (RWHS) can play a multipurpose role, contributing to the management of rainwater runoff, in addition to the water supply. This article assessed the potential reduction in stormwater runoff by adopting small-scale RWHS in the Brazilian semiarid region based on the Curve-Number (CN). RWHS could minimize runoff in frequency and volume, leading the built environment to perform closer to the land’s natural conditions. Before urbanization, the region had a CN of 76. In post urbanization, a case study of multiple houses showed that the adoption of RWHS could reduce the CN from 86 to 80. A reasonable design (0.5 demand fraction and 2000 L tank capacity) could minimize runoff volume by 34% and frequency of occurrence by 66%. Even RWHS with a minimal design, i.e. small tank capacity and low demand, might contribute to the safety of people, resilience, and sustainability of the city’s infrastructure.
The role of rainwater harvesting in urban stormwater runoff in the semiarid region of Brazil
Araujo, Monique Cerqueira (author) / Leão, Adriano Souza (author) / de Jesus, Thiago Barbosa (author) / Cohim, Eduardo (author)
Urban Water Journal ; 18 ; 248-256
2021-04-21
9 pages
Article (Journal)
Electronic Resource
Unknown
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