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0.5 cm per year on average. Meanwhile,
sink by 40-60 centimeters. In accordance
during the past 30 years, several ground
with a research report released by World
planes in Jakarta have sunk by 5 to 12
Bank, if no preventive measures have
cm each year, thus a number of areas are
been taken by the Indonesian authorities,
inundated by sea water. Dr. Hashanuddin,
by December 6, 2025, sea water will
an expert in geodesy at Bandung College
advance five kilometers towards inland.
of Science and Engineering, said based
By then, the historical city in the north of
on the results of his research from 1982
Jakarta will be completely submerged.
to 2010, some places in Jakarta have
Because of the heavy rainfall, lowland
sunk by 1-15 centimeters per year on
structure and ground subsidence, Jakarta
average, some even by 20-28 centimeters.
has to face the urban inland inundation
Allegedly, during nearly 30 years, some
almost every year. Consequently, it is
places in Prewitt (Pluit), Jakarta have
particularly important to establish and
sunk by 1.8-3 meters; the rise of sea level
maintain completed the water facilities. In
has flooded some luxury residential areas
terms of water resource system, canals in
at the Pearl of the North Coast, with the
the lowland areas of Jakarta were initially
inundated part below the ground deepest
built on the basis of the system originating
to 80 centimeters.
from the colonial period in Netherlands.
According to the prediction of
However, it has already expanded to
United Nations Intergovernmental
become a fairly complicated system.
Panel on Climate Change, by 2025, sea
Jakarta is responsible for the building of
level will only rise five centimeters. But
some canals, irrigation and water gate,
Brinkman believes that Jakarta would
while Indonesian Ministry of Public
â–Ą 75% area of Pluit Reservoir is covered by algae
â–Ą A large number of sediments in Pluit Reservoir