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Showing posts with label Floods. Show all posts
Showing posts with label Floods. Show all posts

Tuesday, November 7, 2017

Penang bald Hillslopes a "time bomb"

Choong (in white) surveying the deforested hillslope next to Majestic Heights.

PENANG MCA has raised concerns about the safety of the residents in Tingkat Paya Terubong 4, right behind the Majestic Heights flats

Its Bukit Gelugor deputy secretary Marvyy Choong said the deforested hill behind the flats, just a stone’s throw away from Block 1, was a time bomb.

“There are 12 blocks of 23-storey flats in Majestic Heights.

“I understand that many residents have already moved out, leaving only a few more, and we’re worried for their safety.

“The surrounding hills are going bald due to ongoing earthwork and the 12 blocks may all collapse during a landslide,” he told a press conference at the flats yesterday.

He added that the hill clearing work was done by a housing project developer, which is also responsible for the paired road linking Bukit Kukus and Bukit Jambul.

Credits - Slides presented by Environmental, health and safety consultant Aziz Noor, and scientist Dr Kam Suan Pheng at the Penang Forum event on Oct 29, 2017



Aishah looking out her window to the hillslope which is just a stone’s throw from her unit

“We are not opposing the paired road project but we’re against high-rise projects in vulnerable areas that may endanger lives,” he said.

Choong said Jalan Paya Terubong was not safe as trees frequently fall during a downpour.

“It is also unsafe for heavy vehicles and they must be banned from using this road after the paired road is completed.”

Meanwhile, housewife Aishah Che Wan, 68, who is living at another apartment scheme near the same hill, said muddy water gushed down the hill on Saturday and Sunday.

“Some small stones damaged a few cars parked by the side of the road,” she said, adding that she now feared for the safety of her family.

“I hope that whoever is clearing the hill will take necessary safety measures to prevent any mishap,” she said. - Starmetro


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Monday, November 6, 2017

Hills, landslides, floods and damaged houses: What to do?

https://youtu.be/kslhytLg-Wc

Hills, landslides and floods: What to do?

 

The mega floods in Penang which followed the landslide tragedy, flash floods in Kuala Lumpur and Petaling Jaya, and a shrinking water catchment area in Ulu Muda ... it’s time our leaders paid attention to the environment.


THE news has been full of the related issues of hill cutting, logging, landslides and floods. The environmental crisis is back in the public consciousness, and we should seize the moment to find solutions and act on them.

Penang has been the epicentre of this upsurge, for good reasons: the mega flash floods and landslides over the weekend and on Sept 15, and the Oct 21 hill slope collapse in Lembah Permai (Tanjung Bungah) which killed 11 employees at a construction site.

Saturday’s overwhelming floods in Penang, which paralysed the island in so many ways and affected lives, property and activities, was a megashock not only to people in the state but throughout the nation.

But it’s not just a Penang phenomenon.

On Oct 30, flash floods caused massive traffic jams in Kuala Lumpur and Petaling Jaya.

Federal Territories Minister Datuk Seri Tengku Adnan Tengku Mansor said the floods were caused not only by heavy rain but by developers of two projects that had blocked drainage.

A stop­work order will be issued if the developers do not take measures specified by City Hall.

Another threat is the logging of valuable water catchment areas.

The Ulu Muda forest in Kedah, which provides much of the water supply to Kedah, Penang and Perlis, is under such a threat as the originally designated Ulu Muda water catchment area has shrunk by 87% from 98,400ha in 1969 to 12,484ha in 2017.

The forest reserve was the most important water catchment area in the Northern Corridor Economic Region but timber production there was growing because Kedah depended on logging as a source of income, said Penang Water Supply Corporation CEO Datuk Jaseni Maidinsa ( The Star, Oct 27).

He suggested that the federal government compensate Kedah for gazetting and preserving Ulu Muda as a water catchment area, noting that the Muda Dam provided 80% of the daily raw water needs for Kedah.

Jaseni issued this stark warning: when logging affects the Muda Dam’s ability to store sufficient water, all three states would face a water crisis in the next dry season.

In Penang, the debate on the floods and the tragic landslide has continued non­stop and moved last week to the State Assembly.

The clearest explanation of the worsening flood situation that I have heard was the presentation by scientist Dr Kam Suan Pheng at the Penang Forum event on Oct 29.


A former Universiti Sains Malaysia academic who then worked in international agencies including the International Rice Research Institute, Dr Kam said there were seven main causes of floods in Penang:

  • > Increasingly heavy rainfall; 
  • > Expansion of impermeable surface area;
  • > Eroded soil and landslides increase the sediment load in surface runoffs;
  • > Debris that clogs up waterways; 
  • > Accumulation of surface flow downstream;
  • > Limited capacity to channel off discharge; and
  • > High tides slow down discharge to the sea.

She provided historical and current data to show that flash floods are happening more frequently and with more adverse effects, even with lower rainfall levels. With higher rainfall expected in future, the situation can be expected to significantly worsen.

Dr Kam focused on expansion of impermeable surface area (caused by ill­ planned development and replacing natural ground cover such as hills, fields and trees that act as a water ­absorbing sponge) and soil erosion and landslides (caused by cutting and development in hill areas) as two factors that need special attention.

She quoted Datuk Kam U Tee, the Penang Water Authority general manager (1973~­90), as having correctly explained the Penang floods of October 2008, as follows: the floods were caused by conversion of the Paya Terubong and Bayan Baru valleys into “concrete aprons that do not retain water. The water immediately flows into streams causing flash floods even with moderate rainfall. Because of hill­cutting activities, the flowing water causes erosion of the slopes which carries mud and silt into the river beds”. ( The Star, Oct 24, 2008).


Flood mitigation and flood prevention are two types of actions to tackle the flood problem, said Dr Kam.

Mitigation measures only tackle the symptoms, are costly and need public (state and federal) funds. These include structural measures (upgrading rivers, installing pumps) and non­structural measures (drainage masterplan; flood forecasting and warning systems; public education).



Flood prevention should be the priority as that would tackle the root causes, said Dr Kam, who proposed the following actions:
  • > Proper land-­use planning and development control;
  • > Environmental, drainage, transportation and social impact assessments should be made   regarding development plans, beyond individual development projects;
  • > Stringent protection of hill land and slopes;
  • > Stringent monitoring of development projects;
  • >More greening of urban spaces, including a system of parks; and 
  • >Protection of riverbanks. 


To take these measures, policymakers have to deploy a wide range of policy and legal instruments, and to adopt environmentally sensitive and ecologically friendly structural and non­structural solutions, concluded Dr Kam.


Another speaker, Datuk Agatha Foo, complemented Dr Kam nicely when she elaborated on the various laws, guidelines and plans that can be used to prevent the wrong kinds of development, to control and monitor approved developments and to strictly enforce the laws.





She also spoke on the loopholes and weaknesses of the laws and how to correct them.

Events of the past few weeks alone indicate that the number of environment ­related and human-made problems are bound to increase, probably many times, unless our leaders and policymakers give higher priority to the environment and to well­ planned development. The paradigm shift should start now, as the alarm bells have already rung.


Source: The Star Malaysia director@southcentre.org Martin Khor Martin Khor is executive director of the South Centre. The views expressed here are entirely his own.


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Wednesday, November 1, 2017

Floods hit Bujkit Jambul & Hong Seng Estate in Penang

Wet, wet woes: (Above) Bukit Jambul is flooded once again after an evening downpour.



Firemen installing a pump to draw floodwaters from one of the affected houses on a slope in Hong Seng Estate, Mount Erskine.

GEORGE TOWN: A blocked underground drainage saw six houses located on a slope in Hong Seng Estate, Mount Erskine, flooded during an evening downpour.

Firemen and Civil Defence Force personnel had to install a water pump to draw out the rainwater which flooded some of the units to waist-level.

Rojak seller Tan Swee Hoe, 56, said she was shocked to see her kitchen and living room submerged in water at 7pm yesterday.

“I rushed home after receiving a call from a neighbour, saying my house is flooded.

“But I did not expect such a sight. I did not manage to move my furniture and electrical appliances to the upper floor, thus incurring several thousand ringgit in losses.

“I have been staying here for 17 years and this is the first time my house is flooded,” she said at her house.

Pulau Tikus assemblyman Yap Soo Huey said 17 people from five houses were affected while the sixth house was unoccupied.

She said the Fire and Rescue Department and the Civil Defence Force personnel moved in to install a 400m pipe to pump the water out from the house manually.

“The water is channelled to a nearby river and it may take a few hours if the weather is good,” she said, adding that the district office will evaluate the losses.

Late last month, seven houses in the estate were affected by soil erosion. A consultant engineer Datuk Lim Kok Khong had said the soil erosion was due to water seeping under the ground.

Penang Gerakan secretary H’ng Chee Wey urged the state government, with the aid of the experts, to look into the cause of the problems.

“The state government needs to ensure that the existing infrastructure, including the drainage system, can cope with the demand before it approve new development projects.

“We hope the local authorities can be proactive in the matter,” he added.

Rising waters also flooded the Bukit Jambul area, reducing traffic to a crawl.

Bayan Baru MP Sim Tze Tzin said a RM400,000 flood mitigation project started last month.

“The project will create a shortcut for the floodwater to be discharged directly to Sungai Nibong river instead of passing through Jalan Tun Dr Awang,” he said, adding that the project was expected to be completed at the end of next month.

Source: The Star by chong Kah Yuan

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