Scenarios for urban drainage on a Legal Amazon planned city: a case study in Palmas, Brazil

Abstract

The significant urbanization of Brazil in the last decades has pushed cities to combine population growth with protection and harmonic living with their natural resources. The city of Palmas, a planned city in the Legal Amazon, is inserted in this context. In this sense, this study sought to analyze the hydrological and hydraulic responses to different scenarios of land use and occupation in one of its watersheds. Scenarios modeled with SWMM software were current, critical and compensatory techniques. The results showed that the conveyance system, including the main stream, are fully capable of conveying the affluent flow, even in the scenarios with greater impermeability of the watershed. The peak flow of the critical scenario is up to 11.12% higher than the current scenario. However, with compensatory techniques, it is possible to have a peak flow up to 25.76% smaller than the critical scenario.

Dimensioning Urban Drainage Systems in Housing Subdivisions in the Amazon Using Different Hydrological Models

“…The original project (M1) was designed through the rational method, using the "Multiplus Pro-Sanitation version 17" software. This method is the most widely used in micro drainage projects in Brazil (Bidone & Tucci, 1995) and requires the definition of standard rainfall for the analysis of the river basin and its network of conduits for the transport of rainwater via the use of the intense rainfall equation (IDF) (Mendes & Andrade, 2021).…”