Dam Disaster · Landslide dam

Rishiganga Ground visit report reveals landslide dam & raises questions

The first ground visit report of the Rishiganga catchment in Uttarakhand’s Chamoli district by Dr Naresh Rana, a geologist after the Chamoli Avalanche disaster of Feb 7, 2021 has been shared by NDTV on Feb 11, 2021[i]. Dr Rana visited the catchment of the Rishiganga to understand the ground situation on Feb 10 ,2021 and this is possibly the first such visit since the disaster.

Continue reading “Rishiganga Ground visit report reveals landslide dam & raises questions”
Dams · DRP News Bulletin

DRP News Bulletin 05 November 2018: More Reports on Spectacular Failure of Namami Gange Program 

(Feature image showing preparation of Kumbh 2019 at Prayagraj by Siddharth Agarwal of Veditum)

EDIT article in SCIENCE magazine by TUSHAR SHAH and others on Ganga: “The quickest, cheapest, and most effective way for Mr. Modi to show a less polluted Ganga by 2019 would be operating dams and barrages in the Ganga basin with the sole objective of augmenting river flows. This would be a start to controlling discharge of untreated sewage and industrial waste, which will take a long time.” http://science.sciencemag.org/content/362/6414/503  (2 Nov. 2018)

DOWN TO EARTH says about Ganga: “the river will continue to run as – and even more – polluted as ever… Till August 31, 2018, only a little more than a quarter of the total number of projects sanctioned under it (Namami Gange) had been completed… according to CPCB’s Water Quality Map, only five out of the 70-odd monitoring stations on the river had water that was fit for drinking; only seven had water that was fit for bathing…”

-“Down To Earth quotes a study report and CPCB data to say that the actual measured discharge of wastewater into the Ganga is 123 per cent higher than what has been estimated…”

-“Numerous hydroelectric projects on the Bhagirathi and Alaknanda have turned the upper stretches of the Ganga into ecological deserts, says the Down To Earth assessment. The baseflow amount of the river has decreased by a huge 56 per cent in 2016, as compared to the 1970s.”

– “about 180 MLD of sludge will be generated in the five Ganga Basin states (Uttarakhand, Uttar Pradesh, Bihar, Jharkhand, West Bengal) when they become ODF. If proper sludge management is not done, this would invariably pollute the Ganga. What should cause further concern is that faecal sludge is a bigger pollutant than sewage – while BOD of sewage is 150-300 mg/litre, that of faecal sludge would be 15,000-30,000 mg/litre.” https://www.cseindia.org/ganga-may-not-flow-clean-in-the-near-future-says-new-analysis-9085  (30 Oct. 2018)

Meanwhile, a new CAG report reveals that almost 26 million litres of untreated sewage still flows into the Ganga every day in Uttarakhand. https://www.downtoearth.org.in/news/water/uttarakhand-has-failed-to-rejuvenate-the-ganga-through-namami-gange-62027  (2 Nov. 2018)

Continue reading “DRP News Bulletin 05 November 2018: More Reports on Spectacular Failure of Namami Gange Program “

Arunachal Pradesh · brahmaputra · China · Landslide dam

Another Landslide Dam on Yarlung Tsangpo raises more questions

On Oct 29, 2018, another landslide dam blocked the path of Yarlung Tsangpo Dam, reportedly at the same location as the Oct 17,2018 landslide dam[i]. It breached on Oct 31, without any reported major calamity, but these repeated occurrences, twice in two weeks and third time in ten months (if we include Dec 2017[ii] landslides) raises a lot of questions. The silence of government of India institutions about the possible causes or other analysis, including by Central Water Commission, Union Ministry of Water Resources, National Disaster Management Authority or even National Remote Sensing Agency has, as expected, raised questions and speculations in Arunachal Pradesh. Continue reading “Another Landslide Dam on Yarlung Tsangpo raises more questions”

Arunachal Pradesh · brahmaputra · Landslide dam

Landslide DAM on Tsangpo creates flood disaster risk for Siang

A massive dam, created by landslide in early hours (around 5 am) of Oct 17,2018 has blocked the main stream of Yarlung Tsangpo in Tibet. The reservoir behind the dam already has humungous 360 Million Cubic Meters (MCM) of water by 7 am on Oct 18, 2018 and as per latest reports (subsequently saw the CWC tweet put out at 955 pm on Oct 18,  saying  that storage had reached 484 MCM by 8 pm on Oct 18), the reservoir is still growing in size. The exact location of the landslide dam is uncertain. According to one source, the latitude longitude could be 94.93754° E, 29.74957° N, but this may not be accurate the likely location may be a few kilometers downstream from here. The Chinese media[i] has reported that the landslide dam is located at near Gyalha village in Milin or Manling county. According to some experts who visited the site, the dam could breach very soon, possibly on Oct 19, bringing massive floods along Siang river in Arunachal Pradesh. Continue reading “Landslide DAM on Tsangpo creates flood disaster risk for Siang”

Uttarakhand

Landslide Dam on Sonam River in Uttarkashi: Threat to people and structures in the downstream area

Above: Landslide Dam over Sonam River in Uttarkashi  Dist in Uttarakhand (Photo from Jagran.com)

A landslide on Sonam river (Bhagirathi basin) in Bhatwari block in Uttarakashi district in Uttarakhand has blocked the flow of the river and created a lake about 90 m long, 80 m wide and 1.5-3 m deep. The landslide dam in Nelong valley in Jadhganga river basin about 145 km from Uttarkashi town, apparently was formed due to landslide during cloud burst on July 27, 2016, but the information about it reached the administration only on Sept 4, 2016, 39 days later. The landslide dam, about 24 km from the India China border has created a threat to the downstream river bank communities, roads and bridges and other structures and also ecology. The reservoir has been formed at the confluence of Angar Nallah, a local stream, with Sonam River. A team of officials sent by the District Collector on Sept 5, 2016 has submitted a report, but the report is not yet in public domain. Continue reading “Landslide Dam on Sonam River in Uttarkashi: Threat to people and structures in the downstream area”

Sikkim · Teesta

TEESTA LANDSLIDE DAM IN DZONGU: RIVER OVERFLOWS OVER DAM BUT RISK CONTINUE

Above: Submerged houses in reservoir behind landslide dam. Photo from Darjeeling Chronicle

The Kanaka River is flowing over the dam that was created on Aug 13, 2016, it is confirmed now, but the risk of the dam failure and disaster downstream continues. In the meanwhile, the upstream villages, cut off due to road damaged and bridge submerged, are facing serious problems.[i] Continue reading “TEESTA LANDSLIDE DAM IN DZONGU: RIVER OVERFLOWS OVER DAM BUT RISK CONTINUE”

Sikkim · Teesta

LANDSLIDE DAM BLOCKS TEESTA TRIBUTARY IN NORTH SIKKIM: MAJOR RISK TO TEESTA RIVER BANK COMMUNITIES

(Above: Lower part of the Dzongu Landslide, Photo from  Save the Hills)

According to a number of reports[i], at around 1230 hours on Aug 13, 2016, a massive landslide completely blocked the flow of Kanaka (Rongyoung) River near Mentam village in Dzongu region in North Sikkim. A hillock called “So Bhir” came crashing down, it is reported. The Landslide dam is about 50 m high, about 45 m wide, the landslide top point is about 900 m above the river. Darjeeling Chronicle reports, the river downstream is totally dry as the water has started collecting behind the landslide dam (that situation seems to have changed on 14th Aug morning around 830 am). Continue reading “LANDSLIDE DAM BLOCKS TEESTA TRIBUTARY IN NORTH SIKKIM: MAJOR RISK TO TEESTA RIVER BANK COMMUNITIES”

Dams · DRP News Bulletin

DRP News Bulletin 18 July 2016 (Remove inefficient Farakka Barrage: Bihar CM)

 

Bihar CM  demands removal of Farakka barrage CM Nitish Kumar on July 16 demanded removal of Farakka barrage on river Ganga, saying “the disadvantages of the barrage appear to be higher than its benefits”. Raising the issue of Bihar’s share in Ganges waters at the 11th Inter State Council meeting in New Delhi, Nitish also sought the Centre’s intervention to ensure uninterrupted flow of water from the states of upper co-basin so that the entire length of Ganga has continuous supply of water even during lean season. The meeting was chaired by PM Narendra Modi and attended by CMs of different states and union ministers. The CM also told the meeting that responsibility to ensure the required water availability at Farakka barrage has been put solely on Bihar. Presenting Bihar’s views Nitish further added that about 16% of the catchment area of river Ganga is in Bihar, but in the lean season 3/4th of the total water flowing in Ganga comes from rivers of Bihar. Estimated 400 cusecs of water flow is received at the Uttar Pradesh border of Bihar in river Ganga. However, at Farakka barrage, 1500 cusecs of water flow is to be ensured, which is achieved mainly through the water contributed by the rivers of Bihar. Indeed, during lean season, not even 400 cusecs of water flow is available at the border of Bihar. In this regard, Centre’s intervention is required to ensure uninterrupted flow of water from the states of upper co-basin, so that the entire length of Ganga river in Bihar has continuous supply of water even during lean season. Nitish also demanded formulation of an effective National Silt Management Policy, saying such a body at the national level is essential for silt management as well as for ensuring uninterrupted flow of water not only in Ganga, but all the other rivers.

Continue reading “DRP News Bulletin 18 July 2016 (Remove inefficient Farakka Barrage: Bihar CM)”

Jammu and Kashmir

Phutkal landslide dam bursts in Zanskar valley, flood creates extensive damage in 2015

NRSC image of blockade 240315
NRSC image of blockade 240315

Marking a significant failure of India’s Disaster Management apparatus, the massive dam created by landslide on the Phutkal River in Zanskar Valley[1] in Kargil district in Jammu and Kashmir burst on May 7, 2015, leading to extensive damage to the bridges, culverts, some buildings and land along the river. Continue reading “Phutkal landslide dam bursts in Zanskar valley, flood creates extensive damage in 2015”