Banca de DEFESA: VINÍCIUS DE AZEVEDO PEREIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : VINÍCIUS DE AZEVEDO PEREIRA
DATE: 29/08/2025
TIME: 09:00
LOCAL: online
TITLE:

Impacts of Urban Stormwater Drainage on Coastal Erosion: An Analysis via Hydrological Modeling in Natal (RN), Brazil

KEY WORDS:

Hydrological Modeling; Surface Runoff; Sustainable Urban Drainage Systems (SUDS)

PAGES: 120
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

Inefficient stormwater management in coastal watersheds can lead to flooding, exacerbate erosional processes, and compromise the stability of urbanized areas. Increasing urbanization in these regions, compounded by climate change, has aggravated this scenario and intensified its environmental, economic, and social impacts. In this context, this study investigates the impacts of the existing urban drainage system on coastal erosion processes at Ponta Negra and Via Costeira beaches in Natal/RN, Brazil, through hydrologic modeling. Three drainage watersheds with varying degrees of urbanization were analyzed using simulations in the PCSWMM software, considering an extreme precipitation event derived from the city's historical pluviometric records. Preliminary results indicate that the watersheds respond distinctly to the same event, with the most urbanized watershed exhibiting the highest specific discharge, which supports the hypothesis of an anthropogenic contribution to the observed erosional processes. Conversely, the least urbanized watershed yielded the lowest values, indicating a reduced impact on surface runoff. Furthermore, the obtained results diverged from the values estimated in the Environmental Impact Assessment (EIA) for the regional hydraulic fill project, particularly concerning the imperviousness indices, leading to an underestimation of the discharge and runoff volume. These preliminary findings suggest the need for a re-evaluation of the current urban drainage model, considering the potential adoption of Sustainable Urban Drainage Systems (SUDS) as a complementary alternative to mitigate the impacts of urbanization and climate change on coastal dynamics.

COMMITTEE MEMBERS:
Presidente - 350698 - VENERANDO EUSTAQUIO AMARO
Interna - 1284389 - MARIA DEL PILAR DURANTE INGUNZA
Externa à Instituição - SARAH DE ANDRADE E ANDRADE