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THE THING TO NOTE IS THAT THIS GRANDIOSE SCHEME OF INTERLINKING INDIA'S RIVERS TOM TOMMED BY VAJPAYEE , ABDUL KALAM AND PAST NDA BIGWIGS , IS NOT FEASIBLE AND IS FRAUGHT WITH DANGER.
THE RIVER INTERLINKING WAS THE BRAINWAVE OF A PEA BRAINED AIRPLANE CAPTAIN WITH ZILCH PERCEPTION BY THE NAME OF CAPT DINSHAW DASTUR.
My idea of a holiday used to be as follows. Go with my family to some peaceful part of Kaveri river, where pristine water flows fast among rocks- just lie down an relax.
THE RIVER INTERLINKING WAS THE BRAINWAVE OF A PEA BRAINED AIRPLANE CAPTAIN WITH ZILCH PERCEPTION BY THE NAME OF CAPT DINSHAW DASTUR.
River interlinking is NOT something that a Govt cando HUSH HUSH. Total transparency is required in this internet age, as the people are stakeholders.
At sea we are NOT allowed to pump ballast taken in one sea to discharge into another sea . It is widely recognized that marine organisms can play havoc when transferred to an alien field.
Ballast water discharge typically contains a variety of biological materials, including plants, animals, viruses, and bacteria. These materials often include non-native, nuisance, exotic species that can cause extensive ecological and economic damage to aquatic ecosystems, along with serious human health issues including death.
A form of cholera, Vibrio cholerae, previously reported only in Bangladesh apparently arrived via ballast water in Peru in 1991, killing more than 10,000 people over the following three years.
[YOUTUBE]http://www.youtube.com/watch?v=A5jCBnMnqlc[/YOUTUBE]
The zebra mussel, native to the Caspian and Black Seas arrived in Lake St. Clair in the ballast water of a transatlantic freighter in 1988 and within 10 years spread to all of the five neighbouring Great Lakes. The economic cost of this introduction has been estimated by the U.S. Fish and Wildlife Service at about $5 billion.
Digging canals to create more tributaries of the main river or extending the tributaries or interconnecting the tributaries of the same river is NOT river interlinking. This has been done in India successfully for a long time.
The problem is when you try to interlink two separate rivers - two separate entities , and make them one or merge them.
This is when sh#t hits the fan.
The idea of interlinking rivers is appealing because it is so grand. But this is a MAD plan which will kill India, I tell this as a desh bhakt .
Rivers are naturally formed water flow systems which has flown for thousands of years and found comfort and peace with itself . Tampering with them will only kill them.
First of all it is so expensive that India has to take a loan from bankers' controlled financial institutions. All this when there are more pressing matters at hand , in nation building.
Upstream dams, have killed rivers, leaving them looking like almost stagnant drainage canals with neither flow of water, nor the availability of new water. The dam reservoir evaporates a lot of water .
The downstream flow is unable to charge underground aquifers . Where the river meets the sea, there is SEVERE salt water intrusion, which kills all underground aquifers .
Saltwater intrusion is the movement of saline water into freshwater aquifers near the coast, which leads to contamination of drinking water sources . Because saltwater has a higher mineral content than freshwater, it is denser and has a higher water pressure. As a result, saltwater can push inland beneath the freshwater.
Unchecked borewell extraction ( with FREE electricity given to farmers ) have increased saltwater intrusion in many coastal areas. Water extraction drops the level of fresh groundwater, reducing its water pressure and allowing saltwater to flow further inland.
Cyclone caused and sea water surges make saltwater intrusion worse. Larger storms produce larger storm surges and this combined with a rise in sea level could result in much higher rates of coastal erosion which would in turn impact on the levels of saline intrusion.
The fresh groundwater flows from inland areas towards the coast where elevation and groundwater levels are lower. Because saltwater has a higher content of dissolved salts and minerals, it is denser than freshwater, causing it to have higher hydraulic head than freshwater.
Hydraulic head refers to the liquid pressure exerted by a water column- a water column with higher hydraulic head will move into a water column with lower hydraulic head, if the columns are connected.
The saltwater and freshwater meet in a transition zone where mixing occurs through dispersion and diffusion. Ordinarily the inland extent of the saltwater wedge is limited because fresh groundwater levels, or the height of the freshwater column, increases as land elevation gets higher.
Drainage networks constructed to drain flat coastal areas can lead to intrusion by lowering the freshwater table, reducing the water pressure exerted by the freshwater column.
Drainage networks constructed to drain flat coastal areas can lead to intrusion by lowering the freshwater table, reducing the water pressure exerted by the freshwater column.
The change of hydraulic properties by the saltwater intrusion. A mixture of saltwater and freshwater is often undersaturated with respect to calcium, triggering dissolution of calcium in the mixing zone and changing hydraulic properties.
The process known as cation exchange, which slows the advance of a saltwater intrusion and also slows the retreat of a saltwater intrusion. When groundwater levels in aquifers are depleted faster than they can recharge. This is directly related to the position of the interface and determines the amount of saltwater that can intrude into the freshwater aquifer system.
Since saltwater intrusion is directly related to the recharge rate of the groundwater, this allows for other factors that may contribute to the encroachment of seawater into the freshwater aquifers.
It is important to stop pumping from a saline bore well , until the natural recharge rate of the aquifer can force the saltwater freshwater interface back to its normal position. This process can take a long time and it reduces the freshwater availability of this region.
Water quality has suffered immensely due to poor implementation of waste management laws, leading to large-scale pouring of effluents and sewage into rivers and water bodies.
Without interlinking rivers , indiscriminate construction of canals and drainage networks can lead to saltwater intrusion at the coastal areas. People at the Indian coast have NO problems understanding what I write here.
Water must never be used to score political brownie points. Ministers lay the foundation stone , and they want their names to be remembered for posterity . So they arm twist all and sundry to get the project completed"all for selfish reasons.
Some amount of river water MUST flow to the sea. The brackish water at the river mouth sustains a large quantity of marine organisms and fish.
Reducing the flow of river downstream of a dam , or by diversion via canals will increase the concentration of pollutants in the river. Many marine species has become extinct.
In 1972 the then Minister for Irrigation K. L. Rao proposed a 2700 kilometer long canal link between the Ganges and Kaveri rivers.
My idea of a holiday used to be as follows. Go with my family to some peaceful part of Kaveri river, where pristine water flows fast among rocks- just lie down an relax.
Mind you the Kaveri water looks like plain soda water. When I in Karnataka I prefer to drink Kaveri water , rather than Aquafina or Kinley or whatever mineral water , the taste is different.
Now imagine you put some muddy Ganges water into it by river interlinking . There goes my glass of water and my nice holiday" who wants to lie down in muddy water!
What India needs is NOT interlinking Indian rivers. We must develop skills in recharging ground water aquifers . We have to develop skills in rainwater harvesting and divert this water into underground aquifers .
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