!-- Javascript Ad Tag: 6454 -->

Tuesday, January 22, 2013

Observers urban, Nirwono Joga, said a number of factors contributed to the flooding in Jakarta 2013.

Jakarta Floods Map

Observers urban, Nirwono Joga, said a number of factors contributed to the flooding in Jakarta 2013.

Flooding problem has not been resolved in the capital. Jakarta flood in the early rounds to enter the year 2013. Flood fairly evenly distributed throughout the greater Jakarta area. Some access roads were cut off. Water as high as 20 to several meters inundating streets Capital. Flooding was not a picky locations, ranging from the township to the Presidential Palace Complex flooded.

High rainfall in recent days to make the volume of water increases. Rivers and reservoirs overflowed. Levees were breached his inability to hold much water. However, flooding should not occur simply because of the high rainfall intensity. Why flooding is occurring and more widespread in the capital?

Observers urban, Nirwono Joga, said a number of factors contributed to the flooding in Jakarta 2013. In general, there have been major changes in the layout space in Jakarta and surrounding municipalities, Bogor, Depok, Tangerang, and Bekasi.

The first factor, changing the green open space in Jakarta to the development, such as housing, buildings, and roads. Rainwater infiltration is reduced and eventually the water flowing into the streets.

"Most of the flooding that occurred in Jakarta occurred in response to water areas, water catchment, the first since the Dutch period is reserved for green space," he said in Jakarta, Tuesday (22/01/2013).

Joga said the government should strictly limit commercial development in Jakarta. New building must be checked to be sure that as much as 30 percent have been providing recharge sources in accordance with the law.

Second, the poor drainage system in Jakarta. According to Joga, drains should lead to the river or the sea, but the catchment area or into the ground. The government should undertake the revitalization of the drainage system around the streets of Jakarta and protocols such as Sarinah, Thamrin, Sudirman, and others. Governments also need to create an eco-system drainage drainage water to leach the source.

Third, it is not optimal reservoir functioning well there. In his notes, in the 1990s, Jakarta has 70 reservoirs and 50 there. However, now only 42 dams and 16 there. As many as 50 percent of them were not running optimally. Reservoirs in Jakarta filled with water hyacinth plants, sewage, and garbage. Silting had caused mud sedimentation. Reservoirs were finally dried and then used as a residential area.

"To increase the capacity optimization, dredging would be done revitalization and restructuring. Optimal if, the reservoir could be a backup water supply," he explained.

Fourth, it does not yet normalized in all rivers. According to observers from Trisakti University, the government should undertake normalization as well as relocating settlements on the banks of the river to the place livable.

"We expect the next 5 years the river has been completed at this time normalized width 20-30 meters to 100 meters," he said.

Previously, Head of Data Information and Public Relations of the National Agency for Disaster Management (BNPB) Sutopo Purwo Nugroho said, tide gauges in the next few days to predict high. On Monday (21.01.2013), tide will peak to a height of 0.95 meters. On Saturday (01/26/2013), pairs can reach 1 meter. Meanwhile, on Sunday next, pairs can reach 0.95 meters.

To note, in 2007, which flushed Jakarta rainfall reached 320 millimeters. Rainfall in Jakarta recently about 95 millimeters and in the upstream region (Puncak, Bogor) about 75 millimeters. The intensity of rain in Jakarta is currently down. However, in late January or early February, rainfall is predicted to double.

For that, the solution to the problem of flooding in Jakarta, added Joga, not only by technical engineering like making sodetan and giant culverts. Social engineering or changing the mindset of the people, he said, more important. Government and the public should be aware of the importance of green open spaces, riverside understand that is not a residential location. Aware by not littering. Technical engineering will not solve the problem of flooding in the absence of awareness itself.

No comments:

Post a Comment