Guest Blog by Manu Bhatnagar
Even as the water crisis gathers pace time is playing out a requiem for lakes and wetlands. Poor understanding of hydrology, greed driven capture of wetlands by real estate, the adoption of the shortest straight line path by infrastructure development agencies, the effort by engineers to make everything straight and neat by concretization, the plummeting of groundwater tables and the interception of free flowing surface runoff by alteration of basin characteristics are the major drivers of the rapid extinction of our waterbodies.
Continue reading “Revival Of Hauz Khas Lake, Delhi: A Pioneering Adventure of INTACH”
Guest Article by Dr. Sreeja KG and Dr. Madhusoodhanan CG
January 6, 2021– An unexpected turn of the weather in the afternoon. Rain clouds gathered from the east and a sudden outpour that lasted through the evening. Heady smells of slaked earth and a welcome respite to the day’s heat. The joy of the surprise shower overshadowed by the worry of harvested paddy in gunny sacks stacked on the field bunds. The paddy which had dried to the satisfaction of the procurement agency’s rigorous moisture tests, is now again wet. Drying it will be an added, unforeseen expense.
Continue reading “Paddy farming in times of climate change – field notes”
While one can never be too sure what is the exact meaning of Chinese whispers, a thoughtful response has to take into account the available facts and the context. This report tries to take stock of available facts and context of this latest episode that started at the end of November 2020 and is still going on: China’s proposed massive hydropower project on the Great Bend of Yarlung Tsangpo River just before the river enters India as Siang, a tributary of Brahmaputra river. It also reviews the key media reports published on this issue.
Continue reading “Why is India not demanding TEIA for the Great Bend Hydro proposal of China?”
For the past few years, I walk along the bridges and riverbanks of Pune, taking pictures of the unique happenings here. I have made several silent friends who sit at the riverbanks grazing their cattle, or recline on the bridges, looking at the river. As a photographer, their body language and stories have fascinated me, as has the river.
Continue reading “Photo Story:Worm Collectors of a Polluted River”
Guest Article by S P Ravi
Kerala continues to witness unusual monsoon rainfall patterns for the third straight year in 2020. Kerala had witnessed its worst flood in almost a century in 2018. The 2019 flood was probably second only to the 2018 floods over the last 50 years, with many places experiencing larger floods than that in 2018. While the state did not face huge floods this year, tragedy struck in the form of the Pettimudi landslide near Munnar in Idukki district. It buried alive 70 members of plantation labourer families, making it the worst ever landslide in Kerala in terms of human causality. Kerala has also witnessed its wettest monsoon in September in this millennium with a rainfall of 601 mm, surpassing the previous highest of 526 mm recorded in 2007. The S-W monsoon period is now over and the state received 2227 mm rainfall, which is 9 percent above long term average.
Continue reading “Reservoir Operations Fail People in Chalakudy River Basin in Kerala in 2020”
Guest Article by Shri Manoj Misra
Delhiites in early-mid April 2020 were pleasantly surprised to find a much healthy river Yamuna in their city. Social media was full of pictures and videos. Many had resigned not to find a living Yamuna in the city in their lifetime. But the pleasant fact was that the river in the city had indeed as if by magic come alive and presented a picture that was hard to believe. There was a river side which did not stink and looked cleaner than usual.
Continue reading “Sau sunar ki aur ek lohar ki – How a single decision sealed Yamuna’s fate”
The earthen Khanda dam in Korea district[i] in Chhattisgarh’s Mahanadi basin breached around 6.30 hrs on Wednesday, Sept 23, 2020. Local farmers alleged negligence by the Water Resources Department officials, who were informed about the dilapidated condition of the dam. The engineers even came and inspected, they said, and went away. They alleged that if they had reduced water storage and in stead opened the two canal gates, this situation may not have come.
Continue reading “Khanda Dam Breach in Chhattisgarh in Sept 2020”
Rejoinder Article by: J.Harsha
An article titled “Role of dams on the floods of August 2018 in Periyar River Basin” was published by Sudheer et al. (2019) in Current Science. A rebuttal was prepared and thanks to South Asia Network of Dams, Rivers and People (SANDRP), the same was published by SANDRP on 25th August 2020 (https://sandrp.in/2020/08/25/role-of-dams-in-kerala-floods-distortion-of-science/) for which Sudheer et al. (2019) has now furnished a response (https://sandrp.in/2020/09/19/response-of-sudheer-et-al-to-the-comments-by-mr-j-harsha-on-the-article-role-of-dams-on-the-floods-of-aug-2018-in-periyar-river-basin-kerala/).
In the rebuttal published by SANDRP, I had questioned the very basis of fitting HEC-HMS model for Periyar River Basin (PRB) by Sudheer et al. (2019), and also challenged the assumptions made by them, the methodology followed and the consequent voluminous inferences such as catchment response at Neeleshwaram (L2), virgin simulations, bank full discharges and particularly inferences that indicted nature for the flood calamity but exonerating the role of dams for the floods of Kerala in 2018.
Continue reading “ROLE OF DAMS IN 2018 KERALA FLOODS: Rejoinder of J Harsha to the response by Sudheer et al”
Sudheer, K P1,2,*, S. Murty Bhallamudi1,3, Balaji Narasimhan1,3, Jobin Thomas1, Bindhu, V M1, Vamsikrishna Vema1,4, Cicily Kurian1,
1Department of civil Engineering, Indian Institute of Technology Madras, Chennai – 600036,
2Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN, USA.
3Indo German Centre for Sustainability, Indian Institute of Technology Madras, Chennai – 600036
*Corresponding Author: firstname.lastname@example.org
The authors of Sudheer et al. (2019) – hereinafter referred to as ‘authors’ – appreciate Mr. J. Harsha (hereinafter referred to as ‘commenter’) for his judgmental assessment (in his blog appeared on SANDRP website- “https://sandrp.in” on August 25, 2020, see: https://sandrp.in/2020/08/25/role-of-dams-in-kerala-floods-distortion-of-science/) of the authors’ work “Role of dams on the floods of August 2018 in Periyar River Basin, Kerala” (published in the Current Science in 2019: [DOI: 10.18520/cs/v116/i5/780-794]). As mentioned in Sudheer et al. (2019), the primary objective of the article was to examine whether the early release of the water stored in the reservoirs would have attenuated the flood peaks, and if so, what would have been the extent of the attenuation, in the context of debates and discussions in the social, political, as well as scientific domains based on non-sequitur speculations. Accordingly, the authors designed a scientific exercise using a widely used hydrological model (HEC-HMS) to understand the role of the dams in the Periyar River Basin (PRB) in the 2018 flooding situation.
Continue reading “Response of Sudheer et al to the Comments by Mr. J. Harsha on the article, “Role of dams in the floods of Aug 2018 in Periyar River Basin, Kerala””