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G. T. Rodrigues and E. N. de Moura
about flood waves and reduce the impacts of these events. For this reason, it is
considered of great importance for urban planning, modeling and simulation of these
events, which occur in natural or artificial drainage channels, as well as the analysis
of interactions with the surrounding plains (Cabral et al. 2016).
GIS have been successfully applied in mapping areas vulnerable to floods and
floods, and in assessing their impacts. The integration between hydrological and/or
hydraulic models to the GIS, is being used in an increasing way in the last years,
especially in mapping of flood areas, be it in urban or rural areas, due to the potential
that this tool presents in data integration of different types and formats (Cabral et al.
2016).
This work presents the procedures for integrating hydrological, hydraulic data of
an urban river with the terrain relief, and urban occupation structures. And for that,
computational tools for hydrodynamic modeling of rivers and channels, associated
with a GIS, were used.
The objective of the article is to create flood scenarios with subsequent estimation
of damage caused by such an event within the study area.
It is believed that this procedure can be adopted as a support in the design of risk
maps, ensuring resources in the planning of emergencies, responses to the disaster
and indicative of the losses more quickly and less subjectivity.
2 Literature Review
The simulation of floods performed by the interaction of hydrological, hydraulic
modeling and the Geographic Information System (GIS), proved through several
studies the possibility of developing a methodology for mapping floods in urban
basins, based on digital data, satellite images and a network of monitoring sensors.
Most of the works are carried out for case studies in the locations of the countries of
Europe and the United States, where the precision of modeling is currently discussed
and the most suitable for application, among which the articles stand out: Horritt and
Bates (2002), Knebl et al. (2005) and Cook and Merwade (2009).
In Brazil, the absence of a range of works and studies referring to flood simulations
is noted, however, it is possible to mention some works developed, such as those by
Monteiro (2015), Monte et al. (2016), Cabral et al. (2016), Moura and Rozelle (2019).
In the construction of the flood spot simulation model, three integrated computational tools were used, the GIS ArcGIS
® , HEC-HAS and HEC-GeoRAS.
HEC-GeoRAS is a set of procedures, tools and utilities for processing geospatial
data in ArcGIS. It is an extension tool of the HEC-RAS, programmed by the Hydrologic Engineer Center, belonging to the Department of the Fire Department of the
United States of America.
Despite being an extension tool for HEC-RAS, the program is compatible
with ArcGIS. HEC-GeoRAS allows the creation, manipulation and preparation of
geometric data for easy export to HEC-RAS.
G. T. Rodrigues and E. N. de Moura
about flood waves and reduce the impacts of these events. For this reason, it is
considered of great importance for urban planning, modeling and simulation of these
events, which occur in natural or artificial drainage channels, as well as the analysis
of interactions with the surrounding plains (Cabral et al. 2016).
GIS have been successfully applied in mapping areas vulnerable to floods and
floods, and in assessing their impacts. The integration between hydrological and/or
hydraulic models to the GIS, is being used in an increasing way in the last years,
especially in mapping of flood areas, be it in urban or rural areas, due to the potential
that this tool presents in data integration of different types and formats (Cabral et al.
2016).
This work presents the procedures for integrating hydrological, hydraulic data of
an urban river with the terrain relief, and urban occupation structures. And for that,
computational tools for hydrodynamic modeling of rivers and channels, associated
with a GIS, were used.
The objective of the article is to create flood scenarios with subsequent estimation
of damage caused by such an event within the study area.
It is believed that this procedure can be adopted as a support in the design of risk
maps, ensuring resources in the planning of emergencies, responses to the disaster
and indicative of the losses more quickly and less subjectivity.
2 Literature Review
The simulation of floods performed by the interaction of hydrological, hydraulic
modeling and the Geographic Information System (GIS), proved through several
studies the possibility of developing a methodology for mapping floods in urban
basins, based on digital data, satellite images and a network of monitoring sensors.
Most of the works are carried out for case studies in the locations of the countries of
Europe and the United States, where the precision of modeling is currently discussed
and the most suitable for application, among which the articles stand out: Horritt and
Bates (2002), Knebl et al. (2005) and Cook and Merwade (2009).
In Brazil, the absence of a range of works and studies referring to flood simulations
is noted, however, it is possible to mention some works developed, such as those by
Monteiro (2015), Monte et al. (2016), Cabral et al. (2016), Moura and Rozelle (2019).
In the construction of the flood spot simulation model, three integrated computational tools were used, the GIS ArcGIS
® , HEC-HAS and HEC-GeoRAS.
HEC-GeoRAS is a set of procedures, tools and utilities for processing geospatial
data in ArcGIS. It is an extension tool of the HEC-RAS, programmed by the Hydrologic Engineer Center, belonging to the Department of the Fire Department of the
United States of America.
Despite being an extension tool for HEC-RAS, the program is compatible
with ArcGIS. HEC-GeoRAS allows the creation, manipulation and preparation of
geometric data for easy export to HEC-RAS.