COMPENSATORY DRAINAGE SYSTEMS A LOCAL AND REGIONAL DRAINAGE SOLUTION WITH A SUSTAINABLE BIAS – CASE STUDY ON THE UFSCAR CAMPUS, SP

Abstract

The intense urbanization generated from the twentieth century and the emergence of large urban centers caused a considerable change in the use and occupation of the soil, which began to waterproof extensive areas, resulting in a significant increase in surface runoff. Among the problems arising from the growth of this runoff, we can mention floods, climate change, interference in the hydrological cycle and water balance. The objective of this work was to survey and organize several studies carried out and their methodologies in a watershed where eight compensatory drainage systems were installed over time. Among these systems are listed a retention basin, four infiltration wells, a grassy channel and two infiltration planes, and the landscape design and guidelines of these systems, all receiving water from building roofs. The study surveyed the characterization of the systems, the constructive design and the results obtained by the researchers and as a result it was estimated that at least about 20% of the volume of surface runoff generated in the basin did not reach the conventional drainage network. Another important aspect was to conclude that, in addition to the control of drainage in the basin, these structures can significantly reduce the costs of acquisition and implementation of shackles and galleries of the urban rainwater network.