—This study explored using database environments
to develop a tailor-made geospatial web-based system to
identify flood risk. This approach can directly target specific
needs and has advantages over existing noncommercial systems.
We analyzed the river network in the Chubu region, which
encompasses nine prefectures in Central Japan, to understand
rainfall-water-level relationships. A spatial web-based system
was then developed to monitor rainfall and river-water levels in
the study area. This database system assesses near-real-time
rainfall and water-level data. A map service was configured
using OpenLayers, an open-source software package. This
proposed system will deliver early-warning flood messages via a
scripting mailer system. However, device error could occur,
which necessitates human verification before a final decision is
made. Self-geolocation helps individual users determine their
risk. Improvements in the visualization and recognition of
existing data using map-service tools and technology may help
reduce tragedies and damage resulting from flooding.
—Database information systems, map services,
web-based systems, warning systems, environmental disaster,
The authors are with the International Digital Earth Applied Science
Research Center, Kasugai, Aichi, Japan (e-mail:
Cite:P. Limlahapun and H. Fukui, "An Information-Systems Approach to Identifying Flood Risks in Central Japan," International Journal of Environmental Science and Development vol. 5, no. 4, pp. 380-386, 2014.