Flood in Jakarta on February 20According to the Indonesian Water Management Agency (BBWSCC) on the 18th, floods occurred in 196 locations in Jakarta’s metropolitan area (Jabodetabek) over the past two months, of which the rain that fell at dawn on February 20 caused the biggest flood.
By region, southern Jakarta and western Jakarta had the most flooding points.
“The cause of the flood can be seen as a lack of drainage system, malfunction, bank collapse, and tidal flooding,” said Bambang Herri Mulyono Basin Management Office. “We are making various efforts to manage the flood, but the most urgent thing is the embankment of the northern coast of Jakarta. Construction” he said.
“There has been a significant subsidence in northern Jakarta,” he said. “In addition to the construction of coastal levees, various flood prevention measures such as tree planting, dams, and reservoirs are being promoted.”
Jakarta city shot on February 20th Indonesia, which is made up of 17,000 islands, is predicted to be submerged in water by 2100 due to the problem of ground subsidence due to the rise of sea level due to global warming and groundwater development.
In particular, in the northern coastal area of Jakarta, the ground is sinking by an average of 7.5 to 13 cm per year, and even when the coastal levee is built, it gradually sinks down, and the seawater crosses the levee from 2007 onwards, repeatedly occurring at high tide.
Due to the lack of urban drainage system, inland rainwater does not drain well, and it reaches seawater.
Basic design completed with Saemangeum technology, a great seawall to save Jakarta’sinking’ The Indonesian government analyzed the reason for the subsidence of the ground in Jakarta, and it was concluded that groundwater extraction accounts for 75%. Building load and perceptual motion were also factors.
President Joko Widodo’s decision to move the capital from Jakarta to Kalimantan in eastern Borneo was also largely affected by the fact that Jakarta was sinking.
The Indonesian government continues to express its will to relocate the capital, but has yet to make the first move as it is pouring its budget on the new coronavirus infection (Corona 19).
Meanwhile, the Korea Rural Community Corporation consortium has presented a blueprint to the Indonesian government for the construction of a’Jakarta Great Seawall’ that is 33km long, 20m high, and 169m wide, like the Saemangeum Seawall off the coast of northern Jakarta.
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