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This story is from April 10, 2006
JNU taps the GIS format
The denizens of JNU have decided to tackle the water crisis on their own. They have decided to tap groundwater as well as harvest rainwater.
They have decided to tap groundwater as well as harvest rainwater - and in a style customary of JNU.
"We decided to map the entire campus geologically in order to identify sources of groundwater. A committee comprising experts from IIT, Delhi Jal Board and JNU was formed to work on it," said JNU vice chancellor B B Bhattacharya.
The idea is basically to determine the depth of water at the sub-surface as well as the quality.
Professor Saumitra Mukherjee of the School of Environmental Sciences said: "We needed to conduct geological as well as geophysical surveys in the process. Geological was to study the rock types (quadrite, granite and pegmatic or their withered products) since all rocks have specific characteristics of holding water and transmitting it."
"And geophysical gauges whether they can hold the water from inside or not," he added.
For instance, in the process of the survey, they found out that the lake in JNU campus, which could serve as an excellent reservoir, was unable to retain water and was leaking from the bottom. Other suitable locations for reservoirs and new plantations have also been discovered in the process.
The team began by collecting high-resolution satellite data to identify areas where water was available. Next, this data was processed through software mapped in the GIS format.
"Ground truthing" came next, which delineated areas conducive for rainwater harvesting. And after this, comes implementation. "This process looks to arrest the lowering water levels and rejuvenate sub-surface water levels.
Soil moisture will improve and help vegetation grow. The entire eco-system will benefit," said Professor Mukherjee.
And this is something the city should look to emulate. "Once we collectively carry out the process of rainwater harvesting, we can help the water levels rise. Currently, they are on the descent.
If done scientifically, it can be very effective," added Professor Mukherjee.
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