Holistic management of watersheds stressed STAFF Reporter GUWAHATI, Sept 1 – Denudation of the city hills have led to the increase in the total run-off volume, as high as 54 times in the events of high-intensity and short-duration rains, while it may lead to a 21- times increase in the total sediment yield under a similar situation. This was found while undertaking a study for a pilot project titled ‘Managing the hilly watersheds through ecological management practices’, in an experimental watershed area of IIT Guwahati. With these outcomes of the study in hand, a pilot project is sought to be implemented in an 18.5-hectare watershed area of the city’s Garbhanga Hills, behind the Sarusajai National Games Village. The city has 105 watersheds. The above disclosures, which have significant importance for tackling the flashflood problem of the city, were made by Prof A K Sarma, who is also the Head of the Civil Engineering Department of the IIT Guwahati, at a workshop here yesterday. Prof Sarma is the principal investigator of the above pilot project. He laid stress on holistic management of the city watersheds with ecological management practices, to save the city from the menacing flashflood problem. He asserted that the topography of Guwahati does not permit safe release of excessive water by gravity flow. Moreover, while tackling flashfloods, the pumping system would require high energy and, therefore, not suitable from the climate change point of view. Again, reliability of power supply is questionable, as, failure may lead to serious crisis, he said. The above study was undertaken to tackle the city’s flashflood problem and the water-related hazards in hilly areas with a socio-economic and ecologically sustainable approach by the Civil Engineering Department of IIT, Guwahati. The Union Urban Development Ministry has extended support to the study. At the workshop, a lively interaction took place with the participation of several scientists engaged in the field and leading social activists. Additional Chief Secretary, Revenue and Disaster Management, Subhash Chandra Das and leading popular science movement activist Prof Anil Kumar Goswami, who is also a former principal of the centurion Cotton College, also addressed the function, among others. (The Assam Tribune ,02.09.2013)
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