Jardins de Chuva: estudo de caso em unidade habitacional de Cerro Largo - RS

Abstract

Rainwater, previously seen as tailings, was destined for rapid flow towards water bodies. This understanding made the process of urban drainage in cities unsustainable, especially the most urbanized ones. Based on this, new alternatives have been developed in order to remedy the negative impacts that occur in urban areas, such as flooding and flooding. These new alternatives intend to integrate the entire drainage system, in order to control the flow generation from the beginning of the precipitation event. One of these measures to control rainwater at the source, which attenuates runoff due to increased urbanization, is the rain gardens. The Rain Gardens are devices that feature a lowered vegetated area, which captures the runoff from the impermeable areas around them, retaining and treating the pollutants present in the rainwater. Considering the importance of urban drainage for society, this study carried out the application of a Rain Garden, as a measure of rainwater control, in a housing lot located in the city of Cerro Largo-RS, in order to analyze its efficiency as a bioretention, storage and infiltration system. The device was designed and dimensioned for the storage and infiltration of rainwater. The implementation of this device provided a dampening of a portion of the rainwater, which was intercepted by this densely paved urban lot and generated flooding points in this location, ensuring proper management of urban rainwater, and preventing material damage to the residence, in addition to promote an improvement in the environment, making it more pleasant.