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It is now widely accepted that Mumbai and Maharashtra, key regions of Bharat-India, are subject to erratic weather Iincluding uncertain 'monsoon' during June-Sept. each year. The current @MahaBJP CM @Dev_Fadnavis, has accepted this as reported in: The Economic Times, Mumbai, 20151028, p-4, wherein he states "... days of rainfall are becoming fewer with huge dry spells. Agriculture is not sustainable anymore ..." while explaining his new initiative called JalyuktShivar in 6,200 villages of #Maha.
Infact, the 120 million population of Maharashtra are also aware that water resouces via monsoon, are now unpredictable. Then "ground water charging" during monsoon is most CRITICAL.
Mumbai and Suburbs get ~2100mm rain over 450sqKm (1sqKm = 1million sq.Meters), of city land area, other than the traditional Lakes drainage zone. Almost all is run off into the sea via larger and larger StormWaterDrains, since Mumbai is mostly paved with concrete or bitumen. The Lakes are unable to supply city with water for more than 200 days.
If 50% rain is saved by 'ground water charging' and diverting thru canals and city wide pipe grid, Mumbai would save: (0.50×2.1×450 million cubic meters = ) 470 Billion Liters (1cubic meter = 1,000 Liters). This is assured water supply for over 125 days for Mumbai (since currently Mumbai recieves 3.75 billion Liters of precious Lakes water per day), without using Lakes water supply. Navi Mumbai and Thane Dist are not included in these calculations. Bore wells will provide water year round, to those plots where ground water charging is done. Simple ActivatedCharcoalFilteration columns will give decent water for bathing and washing. The MCGM can continue to supply drinking water, but at much higher cost and in highly reduced quantity. This alone will extend the Lakes supply of precious water by many months, totalling probably ~250 days.
Each Institution, Building, Housing Society, Entity using/owning/leasing city real estate must be given target to charge the ground in their plot or divert thru pipes to a city pipe grid, a certain target volume of water. Failure should attract punitive water wastage tax. A time line of two years be given and MCGM must aid, inspect and set up water collection pipe grid across city.
When this is done, the excess Lakes water can be diverted to the drought areas of Maha to provide for Citizens there. Similar works can be commenced in the other Nine Smart Cities of Maharashtra.
I request that my blog, written over TEN YEARS AGO, be studied:
http://www.thinkunderstandacceptadapt.blogspot.in/2008/02/ground-water-charging.html
Infact, the 120 million population of Maharashtra are also aware that water resouces via monsoon, are now unpredictable. Then "ground water charging" during monsoon is most CRITICAL.
Mumbai and Suburbs get ~2100mm rain over 450sqKm (1sqKm = 1million sq.Meters), of city land area, other than the traditional Lakes drainage zone. Almost all is run off into the sea via larger and larger StormWaterDrains, since Mumbai is mostly paved with concrete or bitumen. The Lakes are unable to supply city with water for more than 200 days.
If 50% rain is saved by 'ground water charging' and diverting thru canals and city wide pipe grid, Mumbai would save: (0.50×2.1×450 million cubic meters = ) 470 Billion Liters (1cubic meter = 1,000 Liters). This is assured water supply for over 125 days for Mumbai (since currently Mumbai recieves 3.75 billion Liters of precious Lakes water per day), without using Lakes water supply. Navi Mumbai and Thane Dist are not included in these calculations. Bore wells will provide water year round, to those plots where ground water charging is done. Simple ActivatedCharcoalFilteration columns will give decent water for bathing and washing. The MCGM can continue to supply drinking water, but at much higher cost and in highly reduced quantity. This alone will extend the Lakes supply of precious water by many months, totalling probably ~250 days.
Each Institution, Building, Housing Society, Entity using/owning/leasing city real estate must be given target to charge the ground in their plot or divert thru pipes to a city pipe grid, a certain target volume of water. Failure should attract punitive water wastage tax. A time line of two years be given and MCGM must aid, inspect and set up water collection pipe grid across city.
When this is done, the excess Lakes water can be diverted to the drought areas of Maha to provide for Citizens there. Similar works can be commenced in the other Nine Smart Cities of Maharashtra.
I request that my blog, written over TEN YEARS AGO, be studied:
http://www.thinkunderstandacceptadapt.blogspot.in/2008/02/ground-water-charging.html
This could be the one single project of LOW COST, improving and securing the lives of 12Crore Maharashtrians. Obviously, it beats all infrastructur projects, since humans cannot survive without water. Failure of water security would lead to mass immigarion to the South and Maha would lose its prime position in my #Bharat.
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