TITLE:
Dimensioning Urban Drainage Systems in Housing Subdivisions in the Amazon Using Different Hydrological Models
AUTHORS:
Caio Emanuel da Silva Pacheco, Taís Silva Sousa, Elizandra Perez Araújo, Alan Cavalcanti da Cunha
KEYWORDS:
Hydrological Studies, Concentration Time, Calha Norte Program, Amapá
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.11 No.11,
November
29,
2023
ABSTRACT: Hydrological studies for sizing urban drainage systems in the Amazon have
often been neglected and little investigated for rainwater projects. This
research evaluated alternative hydrological models used in sizing urban
drainage network projects in subdivisions with subsidized houses in the
Amazonian region in Brazil. Statistical tests of these models were performed
for both original and alternative scenarios. The methodological steps we
conducted as follows: 1) evaluate the dimensioning of infrastructure project
networks, considering two case studies contemplated by the Calha Norte Program
(CNP) in the state of Amapá; 2) test the statistical significance of the
dimensioning of network diameters (α Ct)
and rainfall intensity-duration-frequency (IDF) relationships, as well as estimating diameters using
alternative models. The results indicated a significant influence on the
diameters of the projected rainfall networks (p Ct parameter significantly impacts dimensioning
estimates in rainwater projects in these Amazonian municipalities. This
suggests that underestimated parameters in MD may cause inefficiency in the
stormwater system projects in future similar scenarios.