The Weather in Chennai

palerider · Jun 21st, 2009, 05:56

Like all sub- tropical and tropical regions, Chennai has two seasons, the wet and the dry.
The wet is more humid, and hot, and the dry...is more hot, and humid.
In the dry it doesn't rain, duh, but the last few years, even that is up for grabs.

Nick-H · Jun 22nd, 2009, 06:16

It's up fro grabs whether it rains in the wet as well, except that, for the last handful of years, we've had floods.

thejag · Jun 30th, 2009, 03:10

floods for a few days every year for water supply all year round is better than coping with the flood of water tankers on the roads....

palerider · Jun 30th, 2009, 13:45

I would like to see a bit more rain water harvesting, instead of just sinking more bores.

thejag · Jul 1st, 2009, 02:22

rain water harvesting is mandatory for all buildings... there was a mad rush for existing buildings to make the necessary provisions a few years back and all new buildings are to be equipped with it. havent paid a lot of attention to news of this kind but i do remember an article quiet a while back attributing the easing of chennais water problem in part to the rwh systems...

But as long as the public reservoirs have water and people receive metro water supply there will be no reason to use the borewells.

Nick-H · Jul 1st, 2009, 03:03

Quote:

rain water harvesting is mandatory for all buildings

I'd like to know if it is still done for all new developments?

palerider · Jul 1st, 2009, 04:52

What I noticed in smaller places outside the cities, was that people tend to have more humble dwellings, and obviously can't afford a rain water tank or anything. I wonder if the government would be able to make these tanks available to low income people, it would save the local authorities in the long run, people wouldn't have to buy water, so would have more disposable income.
And the health benefits are obvious. Rain water is relatively clean, as lond as you keep the critters out.

Nick-H · Jul 1st, 2009, 05:16

As far as I have seen, most rainwater harvesting here is aimed at soaking the stuff back into the earth to maintain the water table, rather than storage for personal use. Both Chennai houses I have lived in have had soak pits.

I'm sure there are exceptions!

palerider · Jul 1st, 2009, 12:25

In Bangalore, with the extremely sudden rise of the middle class, bores are being sunk at a rate of knots. The water table is going down about 3 metres a year apparently, as opposed to half a metre just 10 years ago.
It's not good.
Water tanks are fine, you can have both , especially with the amount of water that falls.
I live in a particularly wet part of Australia, at 34 inches a year.
Chennai has about 3 metres a year.

Nick-H · Jul 1st, 2009, 14:04

But it has it over a period of four to eight weeks.

It could be said that every little counts, but not many people would install rain-water storage that fills once a year and then lasts a few days, remaining dry and dusty for over ten months in a year.

thejag · Jul 2nd, 2009, 14:05

Quote:

Originally Posted by Nick-H

As far as I have seen, most rainwater harvesting here is aimed at soaking the stuff back into the earth to maintain the water table, rather than storage for personal use. Both Chennai houses I have lived in have had soak pits.

Ours too... im sure a majority of the houses have a soak pit and not a tank for the rain water...

Quote:

Originally Posted by Nick-H

I'd like to know if it is still done for all new developments?

im sure it is.... doesnt add much to the cost of the building. theyd install pipes to drain rain water anyway, routing the pipes to a soak pit does not involve significant expenses. havent noticed any study that looks at this angle though...

Jun 21st, 2009, 05:56	#61
palerider this is Brad. He's cute Join Date: Jul 2006 Location: Armidale, N.S.W., Australia Posts: 2,226	Like all sub- tropical and tropical regions, Chennai has two seasons, the wet and the dry. The wet is more humid, and hot, and the dry...is more hot, and humid. In the dry it doesn't rain, duh, but the last few years, even that is up for grabs. __________________ I always wanted to be someone when I grew up, I realise now that I should have been more specific.

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Jun 22nd, 2009, 06:16	#62
Nick-H This is just a cameo appearance Join Date: Oct 2004 Location: Chennai, India Posts: 36,197	It's up fro grabs whether it rains in the wet as well, except that, for the last handful of years, we've had floods.

Jun 30th, 2009, 03:10	#63
thejag has arrived Join Date: May 2009 Location: Chennai Posts: 842	floods for a few days every year for water supply all year round is better than coping with the flood of water tankers on the roads....

Jun 30th, 2009, 13:45	#64
palerider this is Brad. He's cute Join Date: Jul 2006 Location: Armidale, N.S.W., Australia Posts: 2,226	I would like to see a bit more rain water harvesting, instead of just sinking more bores.

Jul 1st, 2009, 02:22	#65
thejag has arrived Join Date: May 2009 Location: Chennai Posts: 842	rain water harvesting is mandatory for all buildings... there was a mad rush for existing buildings to make the necessary provisions a few years back and all new buildings are to be equipped with it. havent paid a lot of attention to news of this kind but i do remember an article quiet a while back attributing the easing of chennais water problem in part to the rwh systems... But as long as the public reservoirs have water and people receive metro water supply there will be no reason to use the borewells.

Jul 1st, 2009, 04:52	#67
palerider this is Brad. He's cute Join Date: Jul 2006 Location: Armidale, N.S.W., Australia Posts: 2,226	What I noticed in smaller places outside the cities, was that people tend to have more humble dwellings, and obviously can't afford a rain water tank or anything. I wonder if the government would be able to make these tanks available to low income people, it would save the local authorities in the long run, people wouldn't have to buy water, so would have more disposable income. And the health benefits are obvious. Rain water is relatively clean, as lond as you keep the critters out.

Jul 1st, 2009, 05:16	#68
Nick-H This is just a cameo appearance Join Date: Oct 2004 Location: Chennai, India Posts: 36,197	As far as I have seen, most rainwater harvesting here is aimed at soaking the stuff back into the earth to maintain the water table, rather than storage for personal use. Both Chennai houses I have lived in have had soak pits. I'm sure there are exceptions!

Jul 1st, 2009, 12:25	#69
palerider this is Brad. He's cute Join Date: Jul 2006 Location: Armidale, N.S.W., Australia Posts: 2,226	In Bangalore, with the extremely sudden rise of the middle class, bores are being sunk at a rate of knots. The water table is going down about 3 metres a year apparently, as opposed to half a metre just 10 years ago. It's not good. Water tanks are fine, you can have both , especially with the amount of water that falls. I live in a particularly wet part of Australia, at 34 inches a year. Chennai has about 3 metres a year.

Jul 1st, 2009, 14:04	#70
Nick-H This is just a cameo appearance Join Date: Oct 2004 Location: Chennai, India Posts: 36,197	But it has it over a period of four to eight weeks. It could be said that every little counts, but not many people would install rain-water storage that fills once a year and then lasts a few days, remaining dry and dusty for over ten months in a year.