Flood Forecasting (FF) is one of the important activities of Central Water Commission (CWC), which is undergoing expansion and improvement, but there is still a huge scope for improvement. In order to better understand the CWC’s flood monitoring and forecasting work, in this article, we have given an overview of CWC’s flood forecasting and monitoring sites in South India, the last region to be covered for 2019 flood season. It includes state wise list of CWC’s Level Forecast, Inflow Forecast and level monitoring sites in South Indian states of Andhra Pradesh, Telangana, Karnataka, Tamil Nadu, Puducherry (no FF sites) and Kerala. Similar report has been published for North India[i] and North East India[ii], East India[iii] and West India[iv]. Continue reading “South India Overview of CWC Flood Forecasting Sites 2019”
Unprecedented Kerala deluge that swept through the coastal state on the day of Independence day 2018 was most disastrous flood incident in the year. It has also been termed as one the worst flood in the state and reminded the people of July 1924 and July 1962 flood calamities. Many experts, several reports and studies have established the role of dams in worsening the deluge. According to reports, 35 out of the 46 dams within the state were opened for the first time in history. All 5 overflow gates of the Idukki Dam were opened at the same time, for the first time in 26 years.
State Government Accepts Dams Role
Kerala is usually considered a flood-proofed state with its undulating terrain. For a state that receives an annual average rainfall of nearly 3,000 mm, its natural landscape protects it from recurrent floods. Indeed, the Kerala flood has highlighted our poor dam management system.
As per officials the crisis could have been contained had the state “gradually released” water from at least 30 dams, in advance of high rainfall, adding that local authorities failed to foresee the imminent danger with high rain predictions. “Such floods have probably recurred after 100 years, exposing the State’s unprofessionally run reservoirs management system and unpreparedness on disaster mitigation and disaster resilience.
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)
Well-known ecologist Madhav Gadgil, founder of the Centre for Ecological Sciences at the Indian Institute of Science, Bengaluru, has described the devastating floods in Kerala as a man-made disaster and a reaction to the illegal excavations and stone quarrying done over a decade. https://www.hindustantimes.com/pune-news/illegal-forest-land-acquisition-major-reason-for-floods-in-kerala-says-ecologist-madhav-gadgil-calls-it-man-made-disaster/story-vMHPKUH623GEnjyQHI09NP.html (19 Aug. 2018)
Further speaking to various regional media, Madhav Gadgil has said that irresponsible environmental policy is to blame for the recent floods and landslides in Kerala. He also called it a “manmade calamity”. He said that the committee report had recommended to protect the resources with the cooperation of local self-govt and people, but those recommendations were rejected.
He also pointed out that quarrying is a major reason for the mudslides and landslides. Other environmentalists also point fingers at the extensive quarrying, mushrooming of high rises as part of tourism and illegal forest land acquisition by private parties as major reasons for the recent calamity. https://energy.economictimes.indiatimes.com/news/power/kerala-floods-the-ghost-of-past-environment-policy-returns/65436707 (17 Aug. 2018)
Dams should never be filled before the end of the monsoons. Because then one doesn’t have any solution but to release the water in the surrounding areas: Himanshu Thakkar, SANDRP says as one of panellist discussing role of dams in aggravating Kerala floods.
Also see, NDTV discussion on Kerala flood crisis, it included SANDRP coordinator:
Here is NDTV Hindi discussion on Kerala flood crisis, included SANDRP coordinator:
Here is admission about sudden, excessive releases and not foreseeing the coming disaster. The Kerala crisis could have been contained had the state “gradually released” waters from at least 30 dams, officials said, adding that the local authorities failed to foresee the imminent danger with high rain prediction. “Such floods have probably recurred after 100 years, exposing the state’s unprofessionally run reservoir management system and unpreparedness on disaster mitigation and disaster resilience, an official pointed out. https://timesofindia.indiatimes.com/city/kochi/gradual-dam-water-release-could-have-contained-crisis/articleshow/65436339.cms (17 Aug. 2018)
Traditionally, our river management strategies are mainly focused on the water flows, including flood management, and these have resulted in various interventions such as dams, barrages, canals and embankments. Most of these interventions have had very little consideration for sediment transfer and even if they did, they were generally defunct within a few years of their operations either due to improper design or inadequate maintenance.
A long-term sediment management strategy has never been a part of any protocol of river management, not just in India, but in several other parts of the world. It is amply clear that sediment management must form an important component of management strategies for the Himalayan rivers. The Union Water Ministry has recently circulated a draft policy on sediment management.
(Feature Image: IMD Sub-Division wise Weekly Rainfall Map 26 July – 1 Aug. 2018)
Amid news of monsoon being normal, farmers in several parts in the country have started facing irrigation water problems affecting sowing of Kharif crops. Apart from, insufficient rainfall, mismanagement of water resources is turning the situation grim for them.
As per reports, water levels in Bhakra and Pong dams in Himachal has plunged to lowest in decades. As a result dam authority has issued advisory to lakhs of farmers in Haryana, Punjab and Rajasthan to use water judiciously. Some official also said that the beneficiary states lacks efficient water management practices which is making the situation tough for them.
The Sri Ram Sagar Project in Telangana has no irrigation water. As per state water minister, a Rs. 1100 crore work was going on to renovate the dam. Meanwhile farmers of about 24 villages have started protest demanding irrigation water form SRSP for their standing crops. Given the tense situation, the State Govt has deployed heavy police forces to control farmers agitation.
At the same time, farmers in North Gujarat farmers have lost 40% of sown crops particularly in Ahmedabad, Morbi and Surendranagar. Non availability of Narmada waters have added to the problems. It is worth to mention that mismanagement of water during past four months in Narmada dam by the authority, has worsened the plight of farmers. Meanwhile, there are reports of furious Surendranagar farmers themselves opening the dam gates going against authority.
Similarly, lack of rainfall in Beed district which is part of Marathwada in Maharashtra has affected the rural population badly. In fact, the rainfall situation in a fourth of India, including Bihar and Uttar Pradesh, was in stark contrast to the rest of the country. Overall, the southwest monsoon in 2018 was only 2 % below normal by July, 27.
The southwest monsoon in Bihar was almost 40 % below normal till July 27 and the state was set to be formally declared ‘drought-hit’. It is worth to mention that the monsoon scenario seems less than reassuring, based on Skymet latest forecast and reading between the lines of IMD Aug. 3, press release.
– Guest blog by Shri N. Ramdas Iyer
This story from Moovattupuzha Town in Kerala is first in a series of online stories of urban rivers from across India. Please share your feedback and suggestions on the same (Read more in appendix). If you have any urban river stories or images that you might want to share, please send them to email@example.com and firstname.lastname@example.org
The Moovattupuzha river which literally means the “river made of three streams”, these being the Thodupuzha river, the Kothamangalam river and the Kaliyar river, ran just through the backyard of my maternal grandparents’ ancestral home. The river lends its name to the town through which it flows. This shows the importance of the river in the life of the people living in the town of Moovattupuzha. Our house was located just on the banks of the confluence. The famous Puzha Kara Kavil Bhagawathi temple (meaning Bhagawathi on the banks of the river) is visited by a lot of people even now.