@Article{ReckziegelWescBazz:2019:AvRiIn,
author = "Reckziegel, Elisabete Weber and Weschenfelder, Jair and Bazzan,
Thiago",
affiliation = "{Universidade Federal do Rio Grande do Sul (UFRGS)} and
{Universidade Federal do Rio Grande do Sul (UFRGS)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)}",
title = "Avalia{\c{c}}{\~a}o do risco de inunda{\c{c}}{\~a}o do Lago
Gua{\'{\i}}ba e Delta do Jacu{\'{\i}}, Rio Grande do
Sul/Brasil",
journal = "Revista de Gest{\~a}o Costeira Integrada",
year = "2019",
volume = "19",
number = "4",
pages = "221--243",
keywords = "Hazard, Vulnerability, Risk, Gua{\'{\i}}ba Lake, Jacu{\'{\i}}
Delta, Perigo, Vulnerabilidade, Risco, Lago Gua{\'{\i}}ba, Delta
do Jacu{\'{\i}}.",
abstract = "Occupation of areas with hydrological risk can cause damage and
loss to the population and infrastructure. The delineation and
sectorization of flood risk areas of Gua{\'{\i}}ba Lake and
Jacu{\'{\i}} Delta were carried out with the integration of
flood hazard and socioeconomic vulnerability information. For a
flood hazard assessment, return time and protection systems in
areas susceptible to flooding were considered. The vulnerability
was characterized by the exposure of housing, structures of
interest and socioeconomic characteristics of the population. The
extension of flood hazard areas around Gua{\'{\i}}ba Lake and
Jacu{\'{\i}} Delta is of 230 km2 , from which 95 km2 are
considered of high hazard (41% of the overall). Areas with high
flood hazard do not have flood protection system, the return time
is less than 10 years and floods are of low magnitude. Urban
occupation in flood hazard areas covers 40 km2 . Areas with high
vulnerability total 7 km2 (18% of the overall). The houses have a
low standard of construction, poor condition and limited access to
basic services. In general, household income is less than a
minimum monthly wage with a high number of children or older
people. High flood risk areas are characterized by high flood
hazard and high vulnerability. These areas have a low response to
flood events and are located near the islands, in the central and
southern part of the municipality of Porto Alegre and parts of the
urban area of Eldorado do Sul. Assessment and risk sectorization
is important to direct prevention and response actions in the
event of flooding. RESUMO: A ocupa{\c{c}}{\~a}o de {\'a}reas
com risco hidrol{\'o}gico tem como consequ{\^e}ncia a
ocorr{\^e}ncia de danos e perdas para a popula{\c{c}}{\~a}o e
estruturas expostas, tornando importante a
identifica{\c{c}}{\~a}o destes locais. A delimita{\c{c}}{\~a}o
e setoriza{\c{c}}{\~a}o das {\'a}reas com risco de
inunda{\c{c}}{\~a}o do Lago Gua{\'{\i}}ba e Delta do
Jacu{\'{\i}} foi realizada a partir da integra{\c{c}}{\~a}o
das informa{\c{c}}{\~o}es associadas ao perigo e
vulnerabilidade. Para a avalia{\c{c}}{\~a}o do perigo foram
integrados dados de tempo de retorno das inunda{\c{c}}{\~o}es e
sistemas de prote{\c{c}}{\~a}o nas {\'a}reas com
suscetibilidade. A caracteriza{\c{c}}{\~a}o das {\'a}reas
vulner{\'a}veis foi realizada a partir da avalia{\c{c}}{\~a}o
da exposi{\c{c}}{\~a}o das moradias e estruturas de entorno e
das caracter{\'{\i}}sticas socioecon{\^o}micas da
popula{\c{c}}{\~a}o. A extens{\~a}o das {\'a}reas com perigo
de inunda{\c{c}}{\~a}o no entorno do Lago Gua{\'{\i}}ba e
Delta do Jacu{\'{\i}} {\'e} de 230 km2 , destes 95 km2 s{\~a}o
considerados como tendo perigo alto (41%, do total). As {\'a}reas
com perigo alto n{\~a}o apresentam sistema de
prote{\c{c}}{\~a}o contra inunda{\c{c}}{\~a}o e o tempo de
retorno dos eventos {\'e} inferior a 10 anos, predominando
inunda{\c{c}}{\~o}es de baixa magnitude. A ocupa{\c{c}}{\~a}o
urbana em {\'a}reas com perigo de inunda{\c{c}}{\~a}o abrange
40 km2 . As {\'a}reas com alta vulnerabilidade totalizam 7 km2
(18% do total). Nestes locais as moradias apresentam baixo
padr{\~a}o construtivo, prec{\'a}rio estado de
conserva{\c{c}}{\~a}o e acesso limitado a servi{\c{c}}os
b{\'a}sicos. Em geral, a renda dos domic{\'{\i}}lios {\'e}
inferior a um sal{\'a}rio m{\'{\i}}nimo mensal e h{\'a}
elevado n{\'u}mero de crian{\c{c}}as ou idosos. As {\'a}reas
com alto risco s{\~a}o caracterizadas pelo alto perigo de
inunda{\c{c}}{\~a}o e pela alta vulnerabilidade, apresentando
baixas condi{\c{c}}{\~o}es de resposta e mitiga{\c{c}}{\~a}o
diante dos eventos e est{\~a}o localizadas junto {\`a}s ilhas,
na por{\c{c}}{\~a}o central e sul do munic{\'{\i}}pio de Porto
Alegre, ainda em por{\c{c}}{\~o}es da {\'a}rea urbana de
Eldorado do Sul. A avalia{\c{c}}{\~a}o e setoriza{\c{c}}{\~a}o
do risco {\'e} importante para direcionar as a{\c{c}}{\~o}es de
preven{\c{c}}{\~a}o e resposta diante da ocorr{\^e}ncia de
inunda{\c{c}}{\~o}es.",
doi = "10.5894/rgci-n155",
url = "http://dx.doi.org/10.5894/rgci-n155",
language = "en",
targetfile = "rgci-n155_Reckziegel.pdf",
urlaccessdate = "27 abr. 2024"
}