7 of 10 SINKING; Even when it doesn’t rain, it floods; Kota Tinggi, Malaysia! Indonesia: Hundreds homes in Tegal flooded by rob!

Even when it doesn’t rain, it floods, Malaysia

7 of 10 SINKING Sunda Plate

Indonesia SINKING:

Sulawesi -

/ Hundreds of Houses Submerged in Flood Kolaka. Floods hit back Kolaka, Southeast Sulawesi, on Saturday (14/4). Flooding from overflowing rivers Sakuli running through the middle of town. /

Sumatra -

/ Attack Batang River located in the District Tanjungpura, Langkat regency, North Sumatra, overflowed so flooded some streets in the city, on Friday /

Central Java -

/ Hundreds of homes in RT 9 and 10 RW 10 Sub Mintaragen, Eastern District of Tegal, Tegal, flooded by rob on Friday (13/4). It causes the activity of people is hampered. They are concerned, the higher the standing water during heavy rains fell. One resident, Erlin (54) says, rob always occur regularly every year. So far, the efforts of citizens to anticipate sea water into the house is put a sign on the door and some raised floors. "The height of standing water can sometimes reach 20 centimeters, and lasts for days," he said. /

Malaysia SINKING:

/ Even when it doesn’t rain, it floods. Several areas in Kota Tinggi are often flooded during high tide at Sungai Johor and residents are worried the situation will get worse. AN inefficient drainage system and the public’s littering habit have caused several areas here to be easily flooded during high tide, even though there is no rain. /

Thailand SINKING:

/  Bangkok has stopped underground water exploitation over the last 20 years, but it is still experiencing subsidence now! /

7 of 10 Caribbean Islands

Haiti:

/ At least seven houses destroyed were among the 750 flooded in the northwest of Haiti because of the torrential rains that fell for four days in the region, sources of international relief. The floods, which caused six deaths, forced displacement of 323 people last night in the North West Department, according to a document of the United Nations Office for Humanitarian Cooperation (OCHA, for its acronym in English). /

7 of 10 Africa Roll

Rwanda:

/ Rwanda: Floods Kill Two in Musanze, Nyabihu
At least two children died this morning while hundreds of others were left homeless as floods from the Virunga Mountain continue to hit the Northern and Western Provinces. Floods resulting from heavy rains since Tuesday this week in Northern and Western Provinces have left several people homeless. /

7 of 10 SINKING Sunda Plate -

Malaysia:

Even when it doesn’t rain, it floods

Several areas in Kota Tinggi are often flooded during high tide at Sungai Johor and residents are worried the situation will get worse

  AN inefficient drainage system and the public’s littering habit have caused several areas here to be easily flooded during high tide, even though there is no rain.

  A recent check at the intersection of Jalan Tun Sri Lanang revealed that water began to flood the area at about 12.30pm and the condition continued until 3.30pm, with the water  coming from the underground drains, believed to be backflow from Sungai Johor during high tide.

  Shazlan Karim, 28, said the phenomenon often occurred during high tide.

 “Besides the poorly maintained drainage system, I blame members of  the public who throw rubbish all over the place, causing the drains to be clogged.

 “The authorities should also play their parts by maintaining the drains properly so that this problem does not recur. This time, it may not be serious but what if it rains heavily,” said Shazlan.

   He said the public should also not  throw rubbish into drains to prevent them from being clogged up.

 Trader Hashim Masood, 36, urged the authorities  to act on the problems immediately before  the situation gets worse, like the floods that hit the district several years ago.

http://www.nst.com.my/streets/johor/even-when-it-doesn-t-rain-it-fl...

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Indonesia:

Central Java -


Hundreds Flooded House in Tegal Rob

Tegal - Hundreds of homes in RT 9 and 10 RW 10 Sub Mintaragen, Eastern District of Tegal, Tegal, flooded by rob on Friday (13/4). It causes the activity of people is hampered. They are concerned, the higher the standing water during heavy rains fell.

One resident, Erlin (54) says, rob always occur regularly every year. So far, the efforts of citizens to anticipate sea water into the house is put a sign on the door and some raised floors. "The height of standing water can sometimes reach 20 centimeters, and lasts for days," he said.

Head of Department of Public Works (MPW), Ir Gito Mursriyono said that problems related to handling it started. A number of officers deployed to dredge the mouth of the Kali Anyar.

In addition, this year the construction will be done at the mouth of Kali Anyar jeti to overcome the silting. Previously, it has also been normalized along the 400 meter Anyar time to address the stagnant water.
(Henry Hudiyanto / CN31 / JBSM)

http://cybernews.cbn.net.id/cbprtl/cybernews/detail.aspx?x=Regional...

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Sulawesi -


Hundreds of Houses Submerged in Flood Kolaka

Metrotvnews.com, Kolaka: Floods hit back Kolaka, Southeast Sulawesi, on Saturday (14/4). Flooding from overflowing rivers Sakuli running through the middle of town.

Hundreds of homes in two villages Kolaka flood. Residents were forced to stop the activity because the water levels have reached a man's thigh.

Flooding also soak the main road. Road users must exercise extreme caution when passing.

According to residents, the flooding has frequently occurred during the last five years. Flooding is very disturbing and inhibits the activity of citizens. (Wtr4)

http://www.metrotvnews.com/read/newsvideo/2012/04/14/149128/Ratusan...

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Sumatra -

Sarangan Batang River overflowed, flooding Langkat

Langkat - AFP: Attack Batang River located in the District Tanjungpura, Langkat regency, North Sumatra, overflowed so flooded some streets in the city, on Friday (13/4).

"Overflow of the river, due to heavy rain a few days," said one resident Tanjungpura, Azhari Hasibuan.

Some streets in the stagnant water Tanjungpura include Jalan Sudirman and the Old Fish Tax. Residents across the road should be extra careful not to fall.

In addition, he said, residents who lived not far from Sungai Batang attacks also remain vigilant for fear of flash floods. "It just happened all of a sudden flood from the upper reaches of the Batang attack. Moreover, the rain often falls in the area," said Azhari.

Due to overflow of the river to reach the road, public transport buses from Medan purpose Berandan Base must pass slowly. "Sungai Batang frequent attacks until the water overflows into people's homes," he said. (Ant/OL-01)

http://www.mediaindonesia.com/read/2012/04/13/312752/126/101/Sungai...

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Thailand:

A fifth of Saigon may be inundated: expert

Ho Chi Minh City has sunk by 40 – 80cm in the past 15 years due to underground water exploitation and urban development on weak terrain, confirmed Ho Long Phi, director of the city’s Center for Water and Climate Change Management.

When did subsidence begin in Ho Chi Minh City?

HCMC began sinking about 15 years ago. However, the land subsidence rate has increased in recent years. The worst affected areas include Hiep Binh Chanh Ward in Thu Duc District and Phu Dinh Wharf in Districts 6 and 8, with a sinking rate of 2.5 cm a year.

I attribute the subsidence in Hiep Binh Chanh to the development of high-rise buildings, especially along Kha Van Can Street. Parts of Districts 6 and 8 are suffering the same problem due to excessive exploitation of underground water as tap water has failed to meet demand.

What are the consequences of the land subsidence in the long term?

It will paralyze the city’s drainage system, which will sink, while high tides will rise higher than before. There will be no way for floodwaters to flow out. Subsidence due to underground water exploitation usually happens over a wide area.

HCMC has worked out a policy to stop exploiting underground water over the last several years, but many areas have not been provided with tap water

In recent years the city has taken more action than before to stop the exploitation of groundwater. However, the policy has not been thoroughly implemented in some portions because of faucet water shortage. As a result, land subsidence will continue in the next few years.

It will only abate after becoming stable because land subsidence is periodic and lags behind effective action. This lag means that if we stop exploiting underground water now, the land will continue sinking for a while after that.

Bangkok has stopped underground water exploitation over the last 20 years, but it is still experiencing subsidence now. However the phenomenon has stabilized and now moves in a horizontal direction. It is hard to determine when the subsidence will pause, as it depends on geologic structures and the supplementation of underground water.

Before halting their subsidence problems, areas of Bangkok and Shanghai sank by over one meter and two meters, respectively.

If HCMC stops exploiting underground water now, will the subsidence take about 20 years to stabilize?

Based on study results since 1996 and the highest sinking level of 2.5cm a year, HCMC has already sunk by about 40cm in some area. Specifically, the subsidence rate has reached 70-80cm on Nguyen Huu Canh Street in Binh Thanh District over the last few years. It is worrying as the land subsidence is broadening.

What will happen when HCMC subsides by 1-2m like Bangkok or Shanghai?

I have made a model to simulate the 1-2m subsidence and found that the city drainage and sluice system would be neutralized, rendered it unable to drain water or control high tides.

The simulated region covers 5,000 hectares, stretching along the Tau Hu-Ben Nghe Canal to Districts 1, 5 and 10. If the area sinks 1-2m, 20 percent of its surface will be flooded and people have to pump out 10 million cubic meters of water.

The HCMC area is ten times larger than the above simulated region, thus the floodwater volume will be proportionally higher. This means that every time rains the city will have to deal with tens of million of cubic meters of water, and every house will be forced to resort to pumps.

What should HCMC do now to limit land subsidence and flooding?

The city should restrict construction on low-lying areas and prohibit exploitation of underground water and invest in a faucet water system. If these measures are implemented now, HCMC will sink by only 50-60 cm in the next 20 years before potentially halting the process.

Another measure is to build reservoirs in low-lying areas to regulate the flow of water. Some regulating reservoirs can contain the 10 million cubic meters of water and then gradually release it, otherwise the city will have to suffer inundation first and then pump the water out.

phi

Ho Long Phi, director of the HCMC Center for Water and Climate Change Management

Why has construction of regulating reservoirs been referred to for a long time without any actual work being done?

The city initially placed an order to the Steering Center of the Urban Flood Control Program to outline a plan but it took a lot of time. The city thus then tasked the Department of Planning and Architecture to do the job. At present, relevant sides have basically reached an agreement. If the city soon approves the plan, the project will be carried out in the next few months.

Where will the city choose to build the reservoirs?

The city should map places where water flows into. In my opinion, the reservoirs should be built in low-lying areas and places with low-roof houses.

Earlier the city leveled the surface in several areas for urban construction, and is now looking for land to build reservoirs. Are these moves at odds with each other?

It was a mistake for the city to fill in ponds and lakes to build residential and urban areas. For instance, the Binh Phu residential area and Radar Station housing estate in District 6 used to be lowland areas which contained water running from some portions of the inner city.

Since these areas were flattened to build residential areas, water has flown into their vicinity, causing flooding.

Although it is rather late, HCMC has determined to build reservoirs to contain rainwater and regulate high tide and prevent land subsidence as well as rises in the water level caused by climate change.

http://www.tuoitrenews.vn/cmlink/tuoitrenews/features/a-fifth-of-sa...

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7 of 10 Africa Roll -

Rwanda:

Rwanda: Floods Kill Two in Musanze, Nyabihu

At least two children died this morning while hundreds of others were left homeless as floods from the Virunga Mountain continue to hit the Northern and Western Provinces.

The NewTimes journalist says 8-year-old boy died from Musanze District. A 12-year-old boy from Nyabihu District has also died.

Floods resulting from heavy rains since Tuesday this week in Northern and Western Provinces have left several people homeless.

Several sectors in Musanze District and other surrounding areas have also been seriously affected.

http://allafrica.com/stories/201204121005.html

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7 of 10 Caribbean islands

Haiti:

Rains cause flooding hundreds of homes in northwest Haiti

At least seven houses destroyed were among the 750 flooded in the northwest of Haiti because of the torrential rains that fell for four days in the region, sources of international relief.

The floods, which caused six deaths, forced displacement of 323 people last night in the North West Department, according to a document of the United Nations Office for Humanitarian Cooperation (OCHA, for its acronym in English).

The situation is particularly critical in the community of Anse à Foleur, that for four days is held incommunicado, as officials of the Ministry of Public Works are making efforts to restore the road leading from there to Port de Paix.

The relief authorities and other official agencies and NGOs have mobilized to bring the refugees food, water, medicine and other items of primary necessity, OCHA said, one of the agencies providing assistance.

These institutions have gathered in Port-de-Paix in order to provide rapid assistance to the displaced.

http://noticias.terra.com.mx/fenomenos-naturales/lluvias/las-lluvia...

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Comment by Son of Set on April 15, 2012 at 5:24am

Good job mate!

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