Geoscience Reference
In-Depth Information
2. Isahaya Low-Lying Area
Isahaya low-lying area is located in the western part of Japan as shown in
Fig. 1. It has a problem of rainwater drainage and has been suffering from
frequent inundation disasters due to heavy rainfall.
In 1999, heavy rainfall hit the Isahaya City. The temporal change of
rainfall intensity observed at Isahaya City is shown in Fig. 2. The maximum
rainfall intensity was 95 mm/h, and total rainfall amounted to 347 mm. This
heavy rainfall caused an inundation disaster and large part of the low-lying
area was inundated.
Mt. Gokaharadake
N
Hommy
o
River
Isahaya Bay
Tokyo
Hanzou River
0
3km
Isahaya City
Municipal Office
Fig. 1.
Location of the Isahaya city.
Fig. 2.
Rainfall intensity.
