A new study has shown how powerful the monsoons and their abnormalities are: It’s these abnormalities that ended reigns of multiple dynasties in medieval India, not wars. But the society does not seem to understand this basic reality today, and we are not only doing everything in our power to make the monsoon abnormal through human induced climate and natural world changes, but not even valuing the rainwater in our water policies, programs and practices. The changes we are bringing in natural world is making even the smaller monsoon abnormalities bring catastrophic impacts as the capacities of the people and societies to cope with the changes is decreasing. These studies are another wake up call, if only we were interested one.
Accepting that reservoirs operation and flood management in India lack scientific supports, Madhavan Nair Rajeevan, Secretary, Ministry of Earth Sciences, in an interview has revealed that dams and water reservoirs need flood management systems that use scientific methods to understand when the time is right to open the gates.
“As per my understanding, no big reservoir has a decision support system. So we don’t know when to open them, how to open them… I am not attributing the Kerala floods to an individual. There is a common perception that in India most of the flood management systems are not supported by science… I am very sure we don’t have the decision support system and we need it.” https://indianexpress.com/article/india/not-just-kerala-no-scientific-dam-water-management-across-india-madhavan-nair-rajeevan-secy-earth-sciences-5322003/ (24 Aug. 2018)
In another interview he says that while Kerala records among the highest amounts of rainfall in the country, the State did not have a flood warning system in place. He added that while there were several sophisticated tools to anticipate extreme weather events, India still lacked a mechanism to effectively deploy them. https://www.thehindu.com/sci-tech/energy-and-environment/reservoirs-not-managed-using-a-scientific-decision-support-system-m-rajeevan/article24785253.ece (26 Aug. 2018)
Further in a detailed interview, he pitches for ‘decision support systems’ at dams, acknowledges the challenge of climate change, warn against repercussions of ‘fast-warming’ Indian Ocean. https://indianexpress.com/article/india/kerala-floods-m-rajeevan-ministry-of-earth-sciences-met-department-5324840/ (26 Aug. 2018)
After review of North India and Maharashtra Rivers, SANDRP presents the development surrounding rivers in rest of West Zone: Gujarat, Goa, Madhya Pradesh and Rajasthan states in 2017.
Dams, industrial pollution killing State Rivers In MoEF report, Gujarat ranks 4th among top 5 states with highly polluted rivers. Sabarmati is among Gujarat’s 20 most polluted rivers including Narmada and Mahi. Over Rs 200 cr has been spent to curb pollution in Sabarmati & Mindola rivers. This fund is the highest amount ever spent outside the Ganga river conservation project on which Uttar Pradesh has spent Rs 917.24 crore, West Bengal Rs 411.26 crore and Bihar Rs 216.46 crore. As per activist, Rohit Prajapati, industrial effluents are being released in big rivers like Sabarmati, Mahi and Narmada without being treated and big dams have been built on big rivers due to which the rivers are drying up and vanishing as a result, the condition of rivers in Gujarat is going from bad to worse. https://timesofindia.indiatimes.com/city/ahmedabad/polluted-rivers-guj-ranks-4th/articleshow/62685910.cms (The Times of India, 29 Jan. 2017)
This week there are exemplary and encouraging wetlands revival stories from three metro cities of Chennai, Hyderabad and Delhi. In the first example from Hyderabad, meticulously chosen plant species such as tulsi, aswagandha, citronella and hibiscus have been used to create an artificial island to clean Neknampur Lake. The treatment islands are composed of four layers of which the bamboo base keeps the entire structure afloat. Based on soil-less hydroponics, these floating treatment wetlands absorb excess nitrates, thereby reducing the chemical content of the lake water. Microorganisms present in the wetland break down organic matter while the root systems filter out pollutants and sediments. https://www.thenewsminute.com/article/3500-saplings-floating-islands-help-rejuvenate-hyd-neknampur-lake-75819 (The News Minute, 3 Feb. 2018)
Similarly, Chennai-based Care Earth Trust along with the public works department (PWD) and the civic body has managed to restore three urban lakes. While many of the smaller wetlands have vanished over time, many mid-sized wetlands seem to have shrunk by almost 65 percent. Thanks to their joint effort, invasive hyacinth was removed from the Narayanapuram Lake in Pallikaranai, while sewer lines, which emptied into the Perungalathur Lake, have now been plugged. A detailed restoration proposal has been forwarded to the PWD regarding the Korattur-Madhavaram-Ambattur lakes. https://timesofindia.indiatimes.com/city/chennai/hyacinth-out-sewer-line-plugged-three-water-bodies-restored/articleshow/62748110.cms (The Times of India, 2 Feb. 2018)
Meanwhile, Delhi Jal Board (DJB) has taken up interesting new project of creating an artificial lake in Dwarka. The project will supply water in sub-city and improve ground water level too. DJB has approved Rs. 56 crore for the project which will be completed in next seven months. This would the first model project wherein a lake will be used to augment water supply. The special lake is being created next to the Dwarka water treatment plant (WTP) will have a sand bed to allow maximum percolation of water into the ground. It will have a capacity of 10 million gallons (MGD). The project is expected to add supply of 5-6 million gallons water to Dwarka every day.