Flood Refuge Measures In The Vicinity Of
Urban Rivers
Author(s)
H. Gotoh, M. Takezawa, Y. Maeno & H. Oshiki
Abstract
Flood hazards in urban areas have decreased markedly in recent years due to the
implementation of measures such as dikes, weirs, water gates and other
mitigation methods. Consequently, the population of developed or redeveloped
urban areas near river basins and coastal areas has increased considerably, and a
concomitant increase has been observed in the number of high-rise office
buildings and apartments on the alluvium of old urban rivers. While the residents
of these structures are sensitive to earthquake damage, they are relatively
unaware of the risks associated with flooding. While several flood refuges exist
in the vicinity of urban rivers, the intended purpose of these refuges has come to
be regarded as that of earthquake emergency measures rather than a measure
intended for flooding. Consequently, the placement of many of these emergency
refuges does not consider the risk of inundation.
In this report, the present condition of such refuge sites in the low lying areas
of Tokyo is examined. We also investigated the attitude of residents living in
high-rise apartment buildings and detached houses toward flood hazards. Finally,
we proposed flood refuge measures that could be implemented to minimize the
risk of disaster.
Keywords: flooding, refuge site, attitude survey, high-rise apartment building.
1 Introduction
Recently, because of the associated convenience and good living environment,
many people have moved to the urban coastal area of Tokyo. In response to this
increased demand, numerous detached houses and high-rise apartment buildings
have been built by developers in this area, despite the fact that the coastal areas
of Tokyo are potentially at risk from flooding. This increased risk is primarily
Keywords
flooding, refuge site, attitude survey, high-rise apartment building
Related Book
Other papers in this volume
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