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Publication
Hydraulic Planning in Insular Urban Territories: The Case of Madeira Island—São Vicente
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Advisor(s)
Abstract(s)
This study aims to examine the flood propensity of the main watercourse of São Vicente
drainage basin and, if relevant, to propose two methodologies to alleviate the impacts, i.e., detention
basin sizing and riverbed roughness coefficient adjustment. Geomorphological data were obtained
from the watershed characterization process and used through the SIG ArcGIS software for the flood
propensity assessment and then for the calculation of the expected peak flow rate for a return period
of 100 years through the Gumbel Distribution. Subsequently, the drainage capacity of the river mouth
was verified using the Manning-Strickler equation, in order to establish whether the river mouth
of the watershed has the capacity to drain the entire volume of rainwater in a severe flood event.
In summary, it was possible to conclude that São Vicente’s watershed river mouth is not able to
completely drain the rain flow for the established return period. Thus, its drainage capacity was
guaranteed by modifying the walls and streambed roughness coefficient and by sizing the detention
basin using the Dutch and the Simplified Triangular Hydrograph methods.
Description
Keywords
Floods Hydraulics Hydrology Roughness coefficient Territorial management Urban planning São Vicente, Madeira (Portugal) . Faculdade de Ciências Exatas e da Engenharia
Citation
Lousada, S.; Gonçalves, L.; Atmaca, A. Hydraulic Planning in Insular Urban Territories: The Case of Madeira Island—São Vicente. Water 2022, 14, 112. https://doi.org/ 10.3390/w14010112
Publisher
MDPI