Assessment of Hydrological Alteration from 1996 to 2017 in Brantas watershed, East Java, Indonesia
Date
2020-07-01Metadata
Show full item recordAbstract
Climate, land use, and land cover change can propagate alteration to the watershed environment. The interaction be-
tween natural and human activities probably accelerates the change, a phenomenon that will generate serious environmental
problems. This study aims to evaluate the change in the hydrological regime due to natural and human-induced processes.
The study was conducted in Brantas watershed, Indonesia, which is the largest watershed in East Java. This area is populated
by
more
than
8
million
inhabitants
and
is
the
most
urbanized
area
in
the
region.
An
analysis
of
rainfall
time
series
use
to
shows
the
change
in
natural
phenomena.
Two
land-use
maps
at
different
time
intervals
were
used
to
compare
the
rapid
development
of
urbanization,
and
the
discharge
from
two
outlets
of
the
sub-watersheds
was
employed
to
assess
hydrological
changes.
The
indicator
of
hydrological
alteration
(IHA)
method
was
used
to
perform
the
analysis.
The
daily
discharge
data
are
from
1996 to
2017.
The
research
results
show
an
increase
in
flow
(monthly,
1-day,
3-day,
7-day,
30-day,
and
90-day
flows)
in
the
two
sub-watersheds
(Ploso
and
Kertosono)
from
the
pre-period
(1996–2006)
to
the
post-period
(2007–2017).
Collections
- LSP-Jurnal Ilmiah Dosen [7369]