Land-Use and Legislation-Based Methodology for the Implementation of Sustainable Drainage Systems in the Semi-Arid Region of Brazil

In developing countries, the urbanisation process occurs with empirical urban management, a high increase of impermeable areas, and a lack of connection between water resource management and planning. In Brazil, concentrated rainfall and ineffective urban drainage systems add to this context and may...

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Bibliographic Details
Published in:Sustainability 2020-01, Vol.12 (2), p.661
Main Authors: Barros Ramalho Alves, Priscila, Alexandra Alves Rufino, Iana, Hermínio Cunha Feitosa, Patrícia, Djordjević, Slobodan, Javadi, Akbar
Format: Article
Language:English
Subjects:
Arid zones
Catchments
Cities
Climate change
Developing countries
Drainage systems
Efficiency
Flash floods
Flooding
Floods
Hydrologic cycle
Hydrologic data
Hydrology
Industrialized nations
Land use
LDCs
Legislation
Mitigation
Public policy
Rainfall
Resource management
Runoff
Sanitation
Semi arid areas
Semiarid lands
Sustainability
Urban areas
Urban drainage
Urban planning
Urbanization
Water management
Water resources
Water resources management
Water shortages
Water supply
Weather
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Summary:In developing countries, the urbanisation process occurs with empirical urban management, a high increase of impermeable areas, and a lack of connection between water resource management and planning. In Brazil, concentrated rainfall and ineffective urban drainage systems add to this context and may impact the population with flash floods. Although sustainable drainage systems (SuDS) are widely used for flood mitigation, it is still not very well known how those strategies behave in semi-arid regions, where most of the time the weather is very dry. In Brazil, flood mitigation still mostly involves structural measures such as larger pipes or channels, with limited guidance for SuDS use due to the great resistance to change by citizens and managers. This study sought to analyse the efficacy of SuDS in Campina Grande, a semi-arid region of Brazil. A land-use and legislation-based methodology was developed with physical, climate, hydrological and governance data for three catchments and 312 sub-catchments in 30 applications and simulations. Simulations suggest that these strategies would be appropriate for semi-arid regions, with reductions in the flooded area, flooding volume, and impacts. This study is of relevance for cities with a similar climate to reach a sustainable level of urban drainage services, supporting the integration of urban planning and water resources management.
ISSN:2071-1050
2071-1050
DOI:10.3390/su12020661