Permanent preservation urban areas and water management : innovation, resilience and adaptation to extreme hydrological events

• Autor(a) principal: Ackermann, Marcio
• Data de Publicação: 2021
• Outros Autores: Samora, Patricia Rodrigues
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Labor & Engenho (Online)
• Texto Completo: https://periodicos.sbu.unicamp.br/ojs/index.php/labore/article/view/8659862
• topic: Área de preservación urbana permanente; Saneamiento ambiental; Cambios climáticos; Drenaje sostenible; Gestión del agua urbana; Adaptación a eventos hidrológicos extremos; Área de preservação permanente urbana; Saneamento ambiental; Mudanças climáticas; Drenagem sustentável; Manejo de águas urbanas; Adaptação aos eventos hidrológicos extremos; Permanent urban preservation area; Environmental sanitation; Climate changes; Sustainable drainage; Urban water management; Adaptation to extreme hydrological events

This article discusses technical innovation alternatives for the institute of permanent preservation areas (APP), defined by the Brazilian Forest Code, located in urban area. Areas that are currently built, paved, non forested witch, despite the use and occupation of urban land, have natural weaknesses and hydrological functions with the potential to cause significant impacts on the well-being of human populations. The premise is that such areas are strategic for water security and urban microclimate. Slips and landslides, flooding and so on are events directly associated with land use and occupation, but can be mitigated with interventions in APPs. The theoretical framework is based on the paradigm of ecological management of urban water. To demonstrate the feasibility of the proposal, we carried out a case study in an urban APP area on the top of a hill on Avenida Paulista, Central Plateau of the city of São Paulo, a watershed between the Tietê and Pinheiros rivers. The results demonstrate that the volume of rainwater retention using  existing buildings are equivalent to the capacity of all the drainage reservoirs already in operation in the city, confirming the potential of these areas  to minimize peak flows.