Why does Pattaya get flooded so easily?

[juiso]

Just a little bit of rain and many streets are under water again and again?

 

 

[2baht]

Nobody knows, total mystery, they've been looking for a solution for the last 100 years!

[KhunBENQ]

1 minute ago, 2baht said:

Nobody knows, total mystery, they've been looking for a solution for the last 100 years!

Before the 60s I bet the fishermen didn't care at all. No problem, no solution.

No concrete mountains, no paved roads, no one stupid to build housing in the lowest lying terrain.

If it rained it rained. People living in houses on stilts waiting for the water to run off.

[KhunLA]

Same reason most places developed, covered in concrete, asphalt & buildings all draining to the same areas.

 

The rains have nowhere to go (naturally into the earth/ground) but simply follows the poorly managed channeling to clogged storm drains.

Edited September 22, 2022 by KhunLA

[scubascuba3]

Buakhao is a classic example, when they put drainage in a few years ago the pipes were obviously too narrow, diameter of 12 inches, they are either very thick or just don't want to fix the problem 

[Baron Samedi]

shîtty infrastructure.

Edited September 22, 2022 by Baron Samedi

[Lemsta69]

so the tourists can have fun splashing about amongst the live wires. sanuk mak!

[thaibeachlovers]

11 hours ago, scubascuba3 said:

Buakhao is a classic example, when they put drainage in a few years ago the pipes were obviously too narrow, diameter of 12 inches, they are either very thick or just don't want to fix the problem 

The soi that I lived next to off Buakhao was lower than Buakhao, so every time it rained there was a flood up to m'bike axles. It was quite entertaining watching the guys on m'bikes that thought they could get through by going really fast into the flood ( they couldn't ).

I doubt they fixed that yet.

[scubascuba3]

43 minutes ago, thaibeachlovers said:

The soi that I lived next to off Buakhao was lower than Buakhao, so every time it rained there was a flood up to m'bike axles. It was quite entertaining watching the guys on m'bikes that thought they could get through by going really fast into the flood ( they couldn't ).

I doubt they fixed that yet.

those side sois may still flood but they worked on the worst sois, soi 21 fitted big drains all the way down, dug up whole soi, seems ok now

[jacko45k]

Because most of it is built on low lying land that was once swamp.... and now, being fully built up, the water has no where to go to and no path to get to the sea. Buakhao mean white lotus, and a lotus is often called a water lily.

[flynn]

If all the building had gutters and downpipes connected to the storm water drains it would keep a lot off the streets, 

[thailand49]

Maybe I got too much time on my hands. Near twenty years here riding all over Pattaya on my mountain bike I seen digging as far as Chon Buri to Sattahip. Every large project including the tunnel I've stopped and watched the digging etc.. and that includes the Darkside but I'll stick to the topic.

 

I'm not a civil engineer but you don't need to be. Fixing the draining problem inside of Pattaya is impossible it is a <deleted> hole when they dig they have no clue as to what they might find. I don't see this City as having Master plan on file for development?

 

You take the Major roads leading to the Ocean, Theppasit, Pattaya Tai, Pattaya Klang and Pattaya Nua there are major pipes all leading to the ocean which is majority Beach Road.  These so call larger drains are capturing water and being taken to some storage like a reservoir, Levee, please let me know!  When it rains everything drains and leads to the Beach Road, the center island ditches on Sukhumvit is like a large drain pipe but no matter how large that water in the ditch much flow into a drain hole no bigger than a meter or two. Go to the intersection of Pattaya Tai and Sukhumvit walk to the center and look down into the ditch you will see that small cement pipe. When it rains downpour those ditches fill up fast the reason as I stated.

 

All the water capture from Sukhumvit runs down right into Beach road and go to the ocean reason those location there are pumps forcing the water into the ocean especially when it is high tide. This is like trying to fill up a bucket when it is already full, what happens it starts to back up. Every drain old or new leads to one place OCEAN!  Proof all the garbage the next morning on the beach!

 

In the Baukhao area third road, second road, and on certain Soi on Baukhao like mention Soi 21, what seem to be putting in larger drains large enough you can drive a mini cooper is just to store the water below in these larger drains so people don't see it on the surface making many think the problem will be solved but it is basically the theory out of sight out of mind. I saw this done a few years back on the side Soi outside of the RiCon Hotel. They did this also at Soi 15, and 2nd Road leading to the back of Avenue.

 

In the end, no matter how large drains it has to lead and drain to the smaller original drains that lead to the Beach. The way it rains here like this month the volume of water it backs up and reason why we continue to discuss the topic.  In my lifetime it will never be fixed!  You see the work being done on the Darkside in certain areas like Soi Siam been going on for years, the money spend it is like a black hole for official to get rich.

 

In Pattaya, due to the constant flooding it is like a giant sink hole ready to go down. I remember two years ago they started the work on Walking St.. I made a visit on the first day when the hammer was put to the ground what they found was a river underneath W.S. why the work has taken so long?  Not surprise beginning of the years 2nd road near Marine Hotel a Giant sink hole developed more to come just don't know when.

 

Get use it will never end never " This is Thailand "

 

 

 

 

 

 

Edited September 23, 2022 by thailand49

[Aussieroaming]

I was wondering if the new drainage piping needs some or more air release valves fitted. All of the water and air get dragged into the pipes and flow will be terrible if the air can't be released during the flow down to the out fall zone. Entrapped air seriously hinders water flow through a closed pipe if the pipe is full.

 

Secondly, is the inlet to outlet of the concrete or steel pipe runs been surveyed to make sure there is a negative gradient all of the way to the out fall zone.

 

Thirdly, instal trash screens that can trap trash and be cleaned, so that trash doesn't build up in the piping or concrete channels.

[jimn]

2 reasons. 

 

First when it rains the water from outside Patraya should flow harmlessly into the drains and the areas designated to drain the water. Many flood overflow land has been illegally built on and hense there is nowhere for the water to go.

Second. With all the street food traders pouring all their oil and fat down the the nearest drain at the end of the night creates massive fat balls in the drains and blocks them.

[island coconut]

Due to ZERO planning, and the pouring of millions of tons of concrete, Pattaya is really just an enormous swimming pool (or toilet) with a tiny drain pipe. 

[Cake Monster]

Too many Years of poor infrastructure, with little or non attention being paid to one of the fundamentals about building.

Of course, all kinds of " Boys Games " have also been played out, and the end result is what we have today.

And nothing has been learned, so the problem going forward is going to get worse.

[hotchilli]

On 9/22/2022 at 3:54 PM, juiso said:

Just a little bit of rain and many streets are under water again and again?

Water runs to the lowest point.. you can't get any lower than Pattaya.

[2baht]

On 9/22/2022 at 5:41 PM, scubascuba3 said:

Buakhao is a classic example, when they put drainage in a few years ago the pipes were obviously too narrow, diameter of 12 inches, they are either very thick or smart and just don't want to fix the problem 

The plan is working, next 15 inch followed by 18, 20 etc. An ongoing money generator, win win!

[2baht]

14 hours ago, Aussieroaming said:

I was wondering if the new drainage piping needs some or more air release valves fitted. All of the water and air get dragged into the pipes and flow will be terrible if the air can't be released during the flow down to the out fall zone. Entrapped air seriously hinders water flow through a closed pipe if the pipe is full.

 

Secondly, is the inlet to outlet of the concrete or steel pipe runs been surveyed to make sure there is a negative gradient all of the way to the out fall zone.

 

Thirdly, instal trash screens that can trap trash and be cleaned, so that trash doesn't build up in the piping or concrete channels.

Please, stop making sense! TIT!

[aussiexpat]

On 9/22/2022 at 7:41 PM, scubascuba3 said:

Buakhao is a classic example, when they put drainage in a few years ago the pipes were obviously too narrow, diameter of 12 inches, they are either very thick or just don't want to fix the problem 

At least they are learning then as the pipes they just fitted on soi 15 between Bukhao and 2nd road were at least 1.5m in diameter

[thaibeachlovers]

18 hours ago, Aussieroaming said:

Secondly, is the inlet to outlet of the concrete or steel pipe runs been surveyed to make sure there is a negative gradient all of the way to the out fall zone.

Dreaming much?

[thaibeachlovers]

2 hours ago, aussiexpat said:

At least they are learning then as the pipes they just fitted on soi 15 between Bukhao and 2nd road were at least 1.5m in diameter

Rather than solve the problem first time they just keep digging up the road to put in larger pipes. I saw that on Beach Rd in the 90s.

Nice little earner for someone.

[Foghorn]

Job vacancies, no experience needed highest bid wins

[sandyf]

2 hours ago, aussiexpat said:

At least they are learning then as the pipes they just fitted on soi 15 between Bukhao and 2nd road were at least 1.5m in diameter

Many years ago Chonburi city was much the same as Pattaya, until they put in these drains. 

I see them now being put on the main road between Chonburi and Bang Saen.

[SAFETY FIRST]

3 hours ago, sandyf said:

Many years ago Chonburi city was much the same as Pattaya, until they put in these drains. 

I see them now being put on the main road between Chonburi and Bang Saen.

They used these huge pipes in the Avenue. 

 

[scubascuba3]

24 minutes ago, SAFETY FIRST said:

They used these huge pipes in the Avenue. 

 

They laid similar on beach road, at least half blocked by the time work was finished

[SAFETY FIRST]

22 minutes ago, scubascuba3 said:

They laid similar on beach road, at least half blocked by the time work was finished

I reckon the biggest issue is the poorly repaired sections of road. 

 

These temporary road repairs just break up and make their way into the drains.

 

The road gang with their hot ashfalt, bitumen repairs, shovels this ashfalt into the pot holes in the road and a week or two later it's disappeared, down the drains. 

 

 

[sandyf]

2 hours ago, SAFETY FIRST said:

They used these huge pipes in the Avenue. 

 

They would fit quite comfortably inside the square ones.

[SAFETY FIRST]

12 minutes ago, sandyf said:

They would fit quite comfortably inside the square ones.

Mmmmm, ????

That's debatable. 

 

I could stand up in the round pipe, not sure if I could stand up in the square. 

 

Maybe our knowledgeable members can make comment. 

 

Would it be possible to put a square drain (peg) in a round drain (hole)?

[JensenZ]

On 9/23/2022 at 7:00 AM, jacko45k said:

Because most of it is built on low lying land that was once swamp.... and now, being fully built up, the water has no where to go to and no path to get to the sea. Buakhao mean white lotus, and a lotus is often called a water lily.

Finally a sensible answer. There are no pipes big enough to drain that much water quickly enough to prevent flooding. Some years the streets hardly flood at all. This month it happened more often than usual. It's better than having empty damns, like in 2020. If not for covid and no tourists, there would have been very serious water shortages. Better we have water and suffer a few flash floods from time to time.