Dams · DRP News Bulletin

DRP News Bulletin 1 October 2018: Hungry Water Effect due to Dams & Unsustainable Sand Mining Worsened Kerala Floods

Dams and reservoirs make rivers sediment-starved and menacing manifold downstream. While heavy rainfall is also a key factor behind the floods, hungry water had a more pronounced effect, says D. Padmalal, Scientist and Head, Hydrological process group, National Centre for Earth Science Studies.

– “When the sediment transport is interrupted, the potential energy of the hungry water released from dams will scour the river banks downstream, uprooting trees or riparian vegetation and damaging bridges and other engineering structures,” explains Dr. Padmalal. Overloaded with silt and clay from the eroding river banks, the highly turbid and viscous water clogs drainage channels. Subsequent discharge of water from the dam will lead to inundation and waterlogging of large areas.

– Hungry water can also develop in high gradient river channels devoid of adequate quantity of sand and gravel, especially during periods of high rainfall. “Years of uncontrolled sand mining have left most of the rivers in Kerala depleted or exhausted of sand and gravel. This creates a situation similar to the release of hungry water from dams,” notes Dr. Padmalal. When the river channel has adequate supply of sand and gravel, the potential energy of the water is used to transport the mixture. The water does not scour the banks or turn muddy.

Continue reading “DRP News Bulletin 1 October 2018: Hungry Water Effect due to Dams & Unsustainable Sand Mining Worsened Kerala Floods”

Dams · DRP News Bulletin

DRP News Bulletin 3 Sept 2018: CHINA HAS STARTED DECOMMISSIONING DAMS

In a mountain village in southwest China’s Sichuan province, authorities have demolished seven small dam projects this year along a river to clear illegal developments in a new nature reserve. The demolition is part of a nationwide programme to close hundreds of tiny and often ramshackle dams and turbines and bring order to China’s massive hydropower sector after years of unconstrained construction.

The dams sat on an unnamed tributary of the fierce and flood-prone Dadu river, which feeds into the Yangtze, Asia’s largest and longest river, where the government says the “irregular development” of thousands of small hydropower projects has wrecked the ecology. But green groups say the campaign will not necessarily save the environment because it will not affect big state hydropower stations, which they say have caused the most damage.

On the 48 km Zhougong, authorities have already demolished small projects built in nature reserves or encroaching upon new “ecological red lines” drawn up to shield a quarter of China’s territory from development.

The government says small dams have disrupted the habitats and breeding patterns of many rare species of fish, although green groups argue the damage wrought by bigger dams is more severe, with entire towns and ecosystems submerged in water, which they say increases the risk of earthquakes, landslides and even climate change.

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Assam · brahmaputra · Dam Induced Flood Disaster · Floods

Role of Doyang Dam in bringing unprecedented floods in Golaghat

When Dhansiri river broke the highest flood level mark at Numaligarh site in early hours of Aug 2, 2018 in Golaghat district in Assam, it was not only completely out of the blue, the whole episode was unprecedented.

The earlier Highest Flood Level of Dhansiri River at Numaligarh was 79.87 m. The new HFL, it seems, was 80.18 m, full 31 cm above the previous HFL. This is rather rare, normally the new HFL would be a few cm higher, not almost one third of a meter. Secondly, the water level remained above 79.87 cm, the old HFL, for over 60 hours. This is also unusual, normally the water level rarely remains above HFL for more than a day or so. Thirdly, the earlier HFL was achieved on Sept 24, 1985, so this sudden episode of flood was breaking 33 year old record. Continue reading “Role of Doyang Dam in bringing unprecedented floods in Golaghat”

Dams · DRP News Bulletin

DRP News Bulletin 6 August 2018 (2018 is Deficient Monsoon for Lakhs of Farmers)

(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.

Continue reading “DRP News Bulletin 6 August 2018 (2018 is Deficient Monsoon for Lakhs of Farmers)”

Dams · DRP News Bulletin

DRP News Bulletin 9 July 2018: National Meeting on Inland Fishworkers in Delhi on July 10, 2018

The NATIONAL PLATFORM FOR SMALL SCALE FISH WORKERS (INLAND) is convening a Consultative Meeting on Livelihood Issues of Inland Small Scale Fish Workers 10thJuly 2018, Gandhi Peace Foundation, New Delhi.

The Invitation letter says: “India is gifted with vast and varied inland water bodies bearing rich fish resources.Rivers and canals, reservoirs, ponds and tanks, oxbow lakes, wetlands, backwaters and estuaries yield 7.21 million tonnes of fish which is more than 66% of total fish production of the country. The sector sustains about 4 million fish workers and a total population of around 2 crores.Fish provides good quality animal protein rich in minerals and vitamins. About 800 million Indians eat fish. After milk, fish is the largest source of our animal protein.These huge resources are under severe stress. Rivers are poisoned with heavy pollution. Diversion of water from rivers is harming their ecological flow.

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Dams · DRP News Bulletin

DRP News Bulletin 4 June 2018: WED 2018: Environment Protection and Development is NECESSARY and POSSIBLE, provided there is will

How is development possible along with environment protection?  There are two kinds of answers possible to this question. The standard kind of reply would try to provide a list of options that are available to a given development need. Continue reading “DRP News Bulletin 4 June 2018: WED 2018: Environment Protection and Development is NECESSARY and POSSIBLE, provided there is will”

DRP News Bulletin

DRP News Bulletin 23 October 2017: GOA ACTIVISTS UNITE AGAINST DESTRUCTION OF RIVERS

Goa Activists to launch mass agitation against coal transportation & nationalisation of rivers GREAT! Goa activists unite to oppose rivers nationalisation and coal transportation along rivers. https://www.heraldgoa.in/Goa/Goa/Activists-to-launch-mass-agitation-against-coal-transportation-and-nationalisation-of-rivers/121112.html Continue reading “DRP News Bulletin 23 October 2017: GOA ACTIVISTS UNITE AGAINST DESTRUCTION OF RIVERS”

Indian Meteorological Department

River Wise Rainfall in Monsoon 2017

India’s most important season, the June-Sept South West Monsoon has just ended officially on Sept 30, 2017. India Meteorological Department (IMD) reported that India received 841.3 mm rainfall in these four months of monsoon 2017, compared to normal rainfall of 887.5 mm. So Monsoon 2017 rainfall was 5.2% below normal.

The standard dominating reporting of monsoon rainfall figures in India is either state wise or sub division wise[i]. Accordingly, IMD reported that 25 sub divisions reported normal rainfall, 5 sub divisions[ii] reported excess rainfall and six sub divisions[iii] reported deficit rainfall, as can be seen from accompanying IMD sub division wise map of 2017 monsoon rainfall figures. Continue reading “River Wise Rainfall in Monsoon 2017”

Dams · DRP News Bulletin

DRP News Bulletin 11 September 2017 (Why This Rally Won’t Help The Rivers?)

The news media is filled with this new kid on the block, trying to wake the nation about the need to save our rivers… amazing to see so many film stars, politicians, governments, and public personalities, many of them rather innocently joining the band wagon… some friends were pleading that see, he is able to take the message of rivers to so many people, including lakhs of children… let us try and see if there is something positive here… may be, may be this is just the entry point, but the guy and his team have bigger vision? May be we need to give him longer rope, be more charitable and not jump to negativity?

We have kept all this in mind while writing this.

We see nothing from the people who are leading the rally, or their websites or messages that they understand the real threats faced by and reasons for the state of our rivers, are ready to even list such causes or protest any further move to destroy our rivers. The website claims it is “a nationwide awareness campaign to revive our rivers”. Can missed call save our rivers?

Continue reading “DRP News Bulletin 11 September 2017 (Why This Rally Won’t Help The Rivers?)”

Dams · DRP News Bulletin

DRP News Bulletin 10 July 2017 (Private Companies Exit Unviable Large Hydro Projects)

In a remarkable trend emerging in hydro sector in Himachal Pradesh, many leading private companies have started surrendering hydro power projects allotted to them by State Govt. As per the news report, Tata Group, Reliance, Jindal and Larsen & Toubro have either surrendered or are in process of surrendering numbers of hydro projects given to them over past one and half decade. These companies are now increasingly terming the projects as  non-viable and unprofitable. 

In the last week of June, 2017, Tata group reportedly has written to Directorate Energy, expressing its desire to surrender the 450 MW Duggar power project in Pangi area of Chamba district. The project had been allotted to them in 2007-08 and post feasibility study done by its consultants the group has found the unviable. http://www.tribuneindia.com/news/himachal/tatas-give-up-chamba-power-project/428456.html

Before this the Reliance group had declined to set up  300 Mw Purty and 130 Mw Sumte Kothan hydro projects in Spiti. Following this, the State Cabinet on June 24, 2017 meeting agreed to return Rs 85 crore paid as upfront money by Reliance group. 

Similarly in recent past, the Jindal group, which was allotted the 250 MW Kutehar power project in Chamba, put the project on hold for some time without citing specific reasons. http://www.tribuneindia.com/news/himachal/reliance-power-to-get-back-rs-85-cr-it-paid-to-govt-for-2-projects/427112.html

In the latest incident, anticipating problems in evacuating power, with the market being very grim as far as buyers and power rates are concerned, Larsen and Toubro (L&T) is reported to have urged the state govt to enter into a power-purchase agreement (PPA) with it for two of its hydel projects — Reoli Dugli (Lahaul-Spiti) and Sach Khas (Pangi), located in the arduous Chenab basin.

Continue reading “DRP News Bulletin 10 July 2017 (Private Companies Exit Unviable Large Hydro Projects)”