Could this be the cause of flood in Singapore?

[rusty]

Land reclamations along the coast of Singapore may have risen the water level. As a counter measure, Marina Barrage was built to prevent flood during high tide ( as claimed by LKY & PUB) but this has failed because of other immeasurable factors. The grounds along the reclaimed sites were heavily compacted to prevent erosions underneath and water under the ground cannot flow thru into the sea during a heavy downfall even for a short period. As a result, Stamford Canal has became the main water carrier which PUB rightly claimed that it is undersize. Logical?

http://climatetechwiki.org/content/land-claim

http://info.ngwa.org/gwol/pdf/012972266.pdf

 

[cocobobo]

Land reclamations along the coast of Singapore may have risen the water level. As a counter measure, Marina Barrage was built to prevent flood during high tide ( as claimed by LKY & PUB) but this has failed because of other immeasurable factors. The grounds along the reclaimed sites have to be heavily compacted to prevent erosions underneath and water under the ground cannot flow thru into the sea during a heavy downfall even for a short period. As a result, Stamford Canal has became the main water carrier which PUB rightly claimed that it is undersize. Logical?

http://climatetechwiki.org/content/land-claim

http://info.ngwa.org/gwol/pdf/012972266.pdf

i'm not sure about the cause but i notice the water in the canals leading to sea seem at unusually high levels when high tide. I don't recall seeing them at these levels when i was younger.

 

[laksaboy]

Land reclamations along the coast of Singapore may have risen the water level. As a counter measure, Marina Barrage was built to prevent flood during high tide ( as claimed by LKY & PUB) but this has failed because of other immeasurable factors. The grounds along the reclaimed sites have to be heavily compacted to prevent erosions underneath and water under the ground cannot flow thru into the sea during a heavy downfall even for a short period. As a result, Stamford Canal has became the main water carrier which PUB rightly claimed that it is undersize. Logical?

http://climatetechwiki.org/content/land-claim

http://info.ngwa.org/gwol/pdf/012972266.pdf

Land reclamation? Sounds plausible.

However, the Marina Barrage was not built as a countermeasure to prevent flooding. The main reason it was built was to create an artificial reservoir to meet the water consumption of a rising population.

 

[Char_Azn]

Assuming the barrage is the cause, then simply lowering the water level will solve the problem, no need to solve money on more drainage in the first place.

If the barrage was not the cause, the floods would actually be worse since the sea water level would be higher then the level at the behind the barrage level

 

[freedalas]

It's not the Marina Barrage itself that is the cause of the recent bad floods. It's in the manner in which the Barrage is being operated that's the cause. The people manning the Barrage is still inexperienced and when the rain becomes exceptionally heavy and furious, they did not know how many gates to open or how soon they are to be opened. They are still doing it by trial and error. This is the reason why observers of the Orchard Rd flood had mentioned many times that once the water started to subside, it receded very quickly. If the Stamford Canal was full, how could the water subsided in so short a time. It's because by then the people at Barrage knew how many gates to open and how quickly to raise them.

 

[zhihau]

Land reclamations along the coast of Singapore may have risen the water level... Logical?

if the land used for reclamation came from our own soil, that would translate to the land going under the sea level, thus any heavy downpour would have made it easier to start flooding. that would then make your argument logical. however, the last time i heard about reclamation from our own soil was the kaki bukit hill being leveled to fill up areas around the Marine Parade region. couple with the improved drainage system in the early 80s through mid 80s that alleviated the sporadic flooding conditions of Changi Road, Jalan Eunos, Mountbatten and Kallang areas. i couldn't find it acceptable. then you're saying that the reclamation works reclamation works had the soil compacted really well thus resulting in rain water being unable to run off easily, that wouldn't explain well too. for one, why we don't see flooding in Marine Parade area, do we?

 

[rusty]

if the land used for reclamation came from our own soil, that would translate to the land going under the sea level, thus any heavy downpour would have made it easier to start flooding. that would then make your argument logical. however, the last time i heard about reclamation from our own soil was the kaki bukit hill being leveled to fill up areas around the Marine Parade region. couple with the improved drainage system in the early 80s through mid 80s that alleviated the sporadic flooding conditions of Changi Road, Jalan Eunos, Mountbatten and Kallang areas. i couldn't find it acceptable. then you're saying that the reclamation works reclamation works had the soil compacted really well thus resulting in rain water being unable to run off easily, that wouldn't explain well too. for one, why we don't see flooding in Marine Parade area, do we?

Marine Parade is sitting on reclaimed land itself......very hard ground in fact. Ground level also has a part. Orchard Boulevard is about 2 storey higher than the road at Tanglin Mall.

 

[Cestbon]

It's not the Marina Barrage itself that is the cause of the recent bad floods. It's in the manner in which the Barrage is being operated that's the cause. The people manning the Barrage is still inexperienced and when the rain becomes exceptionally heavy and furious, they did not know how many gates to open or how soon they are to be opened. They are still doing it by trial and error. This is the reason why observers of the Orchard Rd flood had mentioned many times that once the water started to subside, it receded very quickly. If the Stamford Canal was full, how could the water subsided in so short a time. It's because by then the people at Barrage knew how many gates to open and how quickly to raise them.

Agree. The person who manage the gate/reservoir are idiot. Most water receded less than 30min ,sea level tide doesn't change much in 30~60 minute.
Before rain start they should have release the water/pump water out. All engineer and manager just sleeping on JOB.

 

[zhihau]

Marine Parade is sitting on reclaimed land itself......very hard ground in fact. Ground level also has a part. Orchard Boulevard is about 2 storey higher than the road at Tanglin Mall.

oh... thought you mentioned earlier that "The grounds along the reclaimed sites have to be heavily compacted to prevent erosions underneath and water under the ground cannot flow thru into the sea during a heavy downfall even for a short period", maybe i misread your sentence.

and yes, the level in which the reclaimed land does play a part, on higher grounds meant less chances of getting caught in a flood. i'm caught in your notion of water being unable to run off easily... underground tunnels need water proofing or not?

 

[rusty]

oh... thought you mentioned earlier that "The grounds along the reclaimed sites have to be heavily compacted to prevent erosions underneath and water under the ground cannot flow thru into the sea during a heavy downfall even for a short period", maybe i misread your sentence.

and yes, the level in which the reclaimed land does play a part, on higher grounds meant less chances of getting caught in a flood. i'm caught in your notion of water being unable to run off easily... underground tunnels need water proofing or not?

There is a highway tunnel (6 lanes I think, under construction) running underneath across the river mouth and this could also contributed to the water flow resistance. The tunnel is coated with high performance water proofing materials to prevent water ponding within the tunnel enclosure.

 

[zhihau]

The tunnel is coated with high performance water proofing materials to prevent water ponding within the tunnel enclosure.

bro,

any idea if the Circle Lines got this same material for the tunnels?

 

[rusty]

bro,

any idea if the Circle Lines got this same material for the tunnels?

The material used in Circle Line is different from the tunnel...a grade lower I think. The super high performance material is used at Changi Sewage Plant..that area is highy corrosive and the material has to double up as concrete protection.

 

[zhihau]

The material used in Circle Line is different from the tunnel.

bro,
me still old school, still believes in "sedikit sedikit lama lama jadi bukit" :o:o:o

 

[rusty]

Singapore has reclaimed land from Marina Bay to Changi.
http://library.thinkquest.org/C006891/reclamation.html

The whole stretch of East Coast are reclaimed land and the ground are heavily compacted to withstand erosions.
Whether this has contributed to the frequent flood....watch the video and judge yourself.

[video=youtube;vmo0FRAVgkM]http://www.youtube.com/watch?v=vmo0FRAVgkM&feature=related[/video]

Another culprit impeding the flow of underground water into the sea could be the tunnel under construction. The size of the tunnel is very huge and still under construction. It runs across the river mouth heading East and in some way also blocking the water from flowing into the sea because of the water tightness of the massive concrete structure...3-4 storey high with 6 lane carriage way I was told.
The idea of widening and re-constructing of canals would be a flop. Why?
This is because the water level has risen due to displacement by reclamation. It happens everyday during high tide, water from the sea flows back into the canals at Laguna and Kallang filling almost to the brim.
Meanwhile let's watch how PUB's experts tackle the flood problems and prove me wrong.

 

[zhihau]

Another culprit impeding the flow of underground water into the sea could be the tunnel under construction.

the next logical question to ask is this: when did the construction of the said underground tunnel start?

 

[bushtucker]

i think all existing major drains should be widened and deepened to efficiently channel away the flash flood water.

 

[vamjok]

a lot of civil engineers in this forum LOL

 

[Bigfuck]

a lot of civil engineers in this forum LOL

They make more sense and provide more credible hypothesis for empirical testing than the 1-liner statements by the official clowns.

 

[vamjok]

They make more sense and provide more credible hypothesis for empirical testing than the 1-liner statements by the official clowns.

i am not doubting their expertises here trust me

this forum is known to drawn people from all walks of life to kpkb and be crazy

 

[Fook Seng]

Singapore has reclaimed land from Marina Bay to Changi.
http://library.thinkquest.org/C006891/reclamation.html

The whole stretch of East Coast are reclaimed land and the ground are heavily compacted to withstand erosions.
Whether this has contributed to the frequent flood....watch the video and judge yourself.

YouTube Link: http://www.youtube.com/watch?v=vmo0FRAVgkM&feature=related

Another culprit impeding the flow of underground water into the sea could be the tunnel under construction. The size of the tunnel is very huge and still under construction. It runs across the river mouth heading East and in some way also blocking the water from flowing into the sea because of the water tightness of the massive concrete structure...3-4 storey high with 6 lane carriage way I was told.
The idea of widening and re-constructing of canals would be a flop. Why?
This is because the water level has risen due to displacement by reclamation. It happens everyday during high tide, water from the sea flows back into the canals at Laguna and Kallang filling almost to the brim.
Meanwhile let's watch how PUB's experts tackle the flood problems and prove me wrong.

Whatever the soil condition, whether compacted or made impervious by waterproofing compounds, a properly designed piece of engineering work would have all these taken into consideration and a once in 50-year event will only happen once in 50 years and not 3 to 4 times a year.