Climate Change · Floods

Krishna-Bhima basin floods in Oct 2020 breaks 56-year-old record

Krishna basin is again facing unprecedented floods, for the second straight year. Unprecedented is a bit of overused word these days, but consider the facts: At no less than ten locations, the Highest Flood Levels (HFL) ever recorded at those locations in the Krishna basin were surpassed (nine locations) or equaled (one location). Some of the HFLs surpassed this year were amazing 56, 51 and 44-year-old records! And imagine most of this happening in second half of Oct 2020, when South West monsoon is traditionally over by end of Sept! There is no doubt the floods were unprecedented.

Continue reading “Krishna-Bhima basin floods in Oct 2020 breaks 56-year-old record”
Floods

Rivers That Reached New Highest Flood Level during Monsoon 2020

Flooding in Madhya Pradesh, late August 2020. Photo: MP Govt., flood list.

In 2020, south west monsoon season when rainfall was 8.74% above normal, rivers reached new Highest Flood Levels (HFLs) at least at 37 locations across the country, as per information available to SANDRP. Maximum 13 such instances come from Central and East India, each. Five instances happened in South India, three in North India and two in North East India. This article provides wise details and hydrographs of all these sites.

SANDRP has been tracking the Highest Flood Level (HFL) breach incidents during monsoon season. The analysis of such HFL breaches in 2018 and 2019 are available on our website. In 2018 we had listed 25 such instances though SW Monsoon rainfall was 9.4% below normal. In 2019 we listed 37 such instances when the SW Monsoon rainfall was 10% above normal.

Continue reading “Rivers That Reached New Highest Flood Level during Monsoon 2020”
Floods · Urban Water Sector

Janta Parliament discussion on the state of water in India

While Indian Parliament has not met since March 2020 (it is now slated to meet from Sept 14, 2020, though without a number of key features including absence of question hour), Civil Society Groups came together and held a Janta (people’s) Parliament from Aug 16 to 21 Aug 2020, where citizens from across the country from all walks of life enthusiastically participated. On Aug 18 there was a three-hour session on Environment issues[i] (such a session is a rarity in Indian Parliament), as part of which, there was a presentation on Water related issues where SANDRP coordinator was invited to speak. Two water related resolutions were passed among others, by the Janta Parliament, one on Flood Management and another on Urban Water Management. See below for details.

Continue reading “Janta Parliament discussion on the state of water in India”
CWC - Central Water Commission · Dam floods · Floods

Central India downpour brings unprecedented flows in Brahmani, Chambal, Godavari, Mahanadi, Narmada, Suvarnarekha

A massive wave of flood is flowing down the rivers originating in Central India states from Odisha in East to Gujarat-Rajasthan in the west. At least fourteen river sites have seen breach of Highest Flood Levels (HFL) in last four days, a record by itself: 7 in Mahanadi, 5 in Godavari, 2 in JNarmada and one each in Suvarnarekha and Chambal. In at least four of these cases, the earlier HFL had survived for 26 years and has now been broken.

The flood wave that is traveling down is above above 35500 cumecs (12.54 lakh cusecs) in Narmada (at Indira Sagar Dam), above 25000 cumecs (8.83 lakh cusecs), in case of Mahanadi (at Hirakud Dam) and Godavari (at Gosikhurd Dam) rivers & over 15000 cumecs (5.3 lakh cusecs) in Chambal (at Gandhi Sagar Dam) River. Continue reading “Central India downpour brings unprecedented flows in Brahmani, Chambal, Godavari, Mahanadi, Narmada, Suvarnarekha”

Dam floods · Dams · Floods · Monsoon

Central India Heavy Downpour brings back nightmare memories of 2019 Chambal Scare

In a rather unusual development, no less than twenty districts in contiguous areas of Madhya Pradesh, Rajasthan and Gujarat had extremely high rainfall in the 48 hours ending at 830 am on Aug 23, 2020. Three of these districts had over 250 mm rainfall in this period, four others had between 200-250 mm, six each between 150-200 and 100-150 and one between 90-100 mm. This contiguous area broadly drains Mahi river to the West, Chambal to the North, Narmada to the South and Betwa to the East. These rivers, thus are now getting heavy flows, and will continue to get for the next few days, some of it from Chambal and Betwa will also end up in Yamuna and Ganga. It reminded one of the nightmarish memories of Sept 2019 when Gandhi Sagar Dam faced existential crisis and the flood peak downstream reached upto Farakka Dam, as CWC Flood forecasting director Sharad Chandra said in a television discussion recently. Continue reading “Central India Heavy Downpour brings back nightmare memories of 2019 Chambal Scare”

Dam Disaster · Floods · USA

Michigan Dam failures-2: FERC is also in the dock

A Sanford couple is taking on the federal government in general and FERC (Federal Electricity Regulatory Commission) in particular after they lost their lakefront home in May when the Sanford Dam was overwhelmed, causing major flooding. This is interesting since at the root of the dam disaster is the failure of FERC. For years, FERC kept humouring the dam owner, and tolerated its violations. Why it did that, when it could have taken much stronger action almost two decades back is a mystery. Hopefully, this case will help get it resolved. Continue reading “Michigan Dam failures-2: FERC is also in the dock”

Dams · Floods

But Why Did Sen Nursing Drain Breach?

On the intervening night of July 18 and 19, Delhi received heavy rainfall spell leaving several areas water logged. In the afternoon of July 19, a video went viral on social media showing collapse of houses along Sen Nursing Nala at ITO, Delhi.

The incident happened due to a breach in right bank of storm water drain at the back of WHO building reportedly damaging about 12 houses of Anna Nagar, a fifty years old slum area located along the left bank of the drain.

Continue reading “But Why Did Sen Nursing Drain Breach?”

Bihar · Floods

Making sense of 2020 Gandak floods

While Bihar is again facing one of the worse floods this monsoon, one basin in Bihar that has possibly faced the maximum floods is Gandak, as a number of reports[i] have described. The floods in Gandak basin were pretty serious, as embankments along Gandak breached at multiple locations, first on western side (Gopalganj district) starting on July 23-24 night and then on Eastern side (Purbi Champaran district).  The flood lead to breaking of three year old HFL (Highest Flood Level) record at Dumariaghat, 19 year old HFL record at Lalganj and most shockingly, 34 year old HFL record at Rewaghat. Continue reading “Making sense of 2020 Gandak floods”

CWC - Central Water Commission · Floods

CWC flood forecasting: Inadequate, non transparent, inconsistent

As over 4 million people in the flood prone areas of North East go through second wave of floods and Ganga basin enters the long flood season, nation’s focus should be on one particular agency, Central Water Commission which is not only the only flood forecasting agency, but is also answerable in multiple other ways for the recurring flood disaster. But the flood forecasting of CWC[i] is grossly inadequate, inconsistent and non transparent.

To illustrate, let us look at the available information about CWC’s flood forecasting and compare it with happened in 2019 flood season. Out of 29 sites[ii] (7 level monitoring sites and 22 Lavel forecasting sites) where rivers crossed the previous Highest Flood Level as per CWC’s own hydrographs of last year, CWC has not updated HFL for at least 8 sites so far this year. In case Salavad in Jhalawar district in Rajasthan, on Kali Sindh river, in stead of updating the new HFL, CWC suddenly discovered this year that that the site had higher HFL achieved 35 years ago in 1985, though till last year, it listed 1996 HFL! Continue reading “CWC flood forecasting: Inadequate, non transparent, inconsistent”

Dams · Floods

Augmentation canal breaches becoming new normal in Haryana

On May 17, 2020 the residents of Ranwar village in Karnal woke up to find their village surrounded by gushing water current which was fast entering their homes. The cause of the flooding was a breach[i] in augmentation canal running close to the village.

The incident was allegedly caused by a small hole at 60.200 point on left bank of the canal around 03.00 am gradually turning into a 40 to 50 feet wide breach by the noon same day. Before the local administration could get into action, around 250 acres of farm lands around the village was flooded.

Continue reading “Augmentation canal breaches becoming new normal in Haryana”