DRP NB 250923: World Rivers vs Indian Rivers on Rivers Day 2023

September 25, 2023September 26, 2023 SANDRPLeave a comment

(Feature Image: Najafgarh drain loaded with polluted water joining River Yamuna downstream Wazirabad barrage in National Capital in June 2023: SANDRP)

Sept 24 is celebrated as the World Rivers day since 2005, the tradition started by river advocate Mark Angelo, who used to celebrate BC (British Columbia in Canada) Rivers day since 1980. There is some good news for rivers across the world in terms of decommissioning of dams, improving environment flows, movements to clean rivers, improve fish migration, protection of flood plains, room for the river, decommissioning of channelisation projects, among others.

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Narmada

18 high flood levels breached in Western India in Sept. 2023

September 22, 2023September 22, 2023 SANDRPLeave a comment

(Feature Image: The water level of the Narmada river near Golden Bridge rises to 35 feet due to heavy rains, in Bharuch on Sept. 17, 2023. ANI/TNIE)

Several of Narmada basin districts in Madhya Pradesh have witnessed heavy to very heavy rainfall spells between September 14 to 16, 2023 resulting in severe flood situation along the river in Madhya Pradesh and Gujarat and resultantly leading to breaching of Highest Flood Level (HFL) at 13 sites in Narmada Basin alone. Similarly, there have been at least 5 more HFL breaches during the same period in western India.

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Dam floods

सरदार सरोवर परियोजना निर्मित बाढ़: रिवर बेड पावर हाउस को 6 सितंबर से क्यों बंद कर दिया गया?

September 20, 2023September 21, 2023 SANDRPLeave a comment

सरदार सरोवर परियोजना (एसएसपी) बांध के अनियोजित संचालन से 16 सितंबर, 2023 की रात से शुरू होकर गुजरात और मध्य प्रदेश में आई बाढ़, कई जिलों के लाखों लोगों के लिए अकल्पनीय आपदा बनकर सामने आई है। इस बांध निर्मित बाढ़ से हुए नुकसान की अभी भी पूरी जानकारी उपलब्ध नहीं है। इस बीच इस टाली जा सकने योग्य आपदा का एक और दिलचस्प पहलू सामने आया है। चौंकाने वाली बात यह है कि 6 सितंबर से 16 सितंबर 2023 तक एसएसपी के 1200 मेगावाट रिवर बेड पावर हाउस (आरबीपीएच) में कोई बिजली उत्पादन नहीं हुई।

इसका मतलब न केवल लगभग 270 मिलियन यूनिट (एमयू जिसकी कीमत यदि 3 रुपये प्रति यूनिट के निचले दर से भी आंकी जाए तो लगभग 80 करोड़ रुपये से अधिक है) के बिजली उत्पादन का नुकसान हुआ। साथ ही इस मात्रा में बिजली उत्पादन हेतु बांध से 1200 क्यूमेक्स या, 42000 क्यूसेक की दर से प्रतिदिन पानी छोड़ा जाता जिसकी मात्रा इन दस दिनों में लगभग 12000 क्यूमेक्स या 4.2 लाख क्यूसेक होती, यदि यह सारा पानी को 24 घंटे की अवधि में छोड़ दिया गया होता। एसएसपी बांध में इतनी मात्रा में कम पानी भंडार करके इस बाढ़ के प्रभाव को बड़े पैमाने पर कम किया जा सकता था।

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Dam floods

Avoidable flood disaster from unaccountable Sardar Sarovar operation: Why was River Bed Power House stopped since Sept 6?

September 20, 2023September 26, 2023 SANDRP2 Comments

The avoidable flood disaster brought in Gujarat and upstream Madhya Pradesh, starting from the night of Sept 16, 2023 by unaccountable operation of the Sardar Sarovar Project (SSP) Dam has created unimaginable impacts for lakhs of people in several districts, the full contours of the damage are still not fully available. But another intriguing aspect of this man-made disaster has come to light. Shockingly, there was no power generation at the 1200 MW River Bed Power House (RBPH) of the SSP from Sept 6 to Sept 16. This not only means loss of power generation of about 270 million units (MU), worth over Rs 80 Crores even at low price of Rs 3 per unit), but also it would have meant release of 1200 cumecs or, 42000 cusecs and over ten days, this would have meant reduction of about 12000 cumecs or 4.2 lakh cusecs from peak discharge for 24 hours, and this itself would have hugely reduced the flood disaster.

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DRP News Bulletin

DRP NB 180923: Floodplain loss, the biggest in Asia, disaster in the making

September 18, 2023September 18, 2023 SANDRPLeave a comment

(Feature Image: Ongoing ghat work along Yamuna at Qudsia ghat, ISBT Dellhi. SANDRP, June 2023)

A floodplain, according to the US Federal Emergency Management Agency, is “any land area susceptible to being inundated by floodwaters from any source”. According to the report “Human alterations of the global floodplains 1992–2019”, over 460,000 sqkms of floodplain area was lost to agriculture, while another 140,000 sqkms was redeveloped to new areas over the existing floodplain. Continent-wise, Asia lost the biggest area of floodplains — a little over 200,000 sqkms — among all the continents. It was followed by South America (92,000 sqkms) and Africa (73,000 sqkms).

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Dam floods

सरदार सरोवर बाँध संचालन की लापरवाही से गुजरात में फिर आई बाढ़

September 17, 2023September 21, 2023 SANDRPLeave a comment

सरदार सरोवर परियोजना (एसएसपी) बांध संचालन अधिकारियों की लेटलतीफी और गैर-जिम्मेदार व्यवहार से गुजरात में बाँध के निचले इलाके एक बार फिर ऐसी बाढ़ की मार झेल रहे हैं जिसे काफी हद तक टाला जा सकता था। भरूच में गोल्डन ब्रिज पर जल स्तर आज 17 सितंबर, 2023 को उच्चतम बाढ़ स्तर (एचएफएल) के करीब पहुंच रहा है, लेकिन अगर एसएसपी अधिकारियों ने समय रहते उपलब्ध जानकारी के आधार पर और बाँध संचालन नियमों जैसे रूल कर्व सिद्धांत का पालन कर कार्रवाई की होती तो इस बाढ़ का एसएसपी बाँध से ऊपरी और निचले दोनों क्षेत्रों में बहुत कम प्रभाव होता।

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Dam floods

Unaccountable Sardar Sarovar operators again bring avoidable floods in downstream Gujarat

September 17, 2023September 21, 2023 SANDRP1 Comment

Late, lethargic and unaccountable actions of Sardar Sarovar Project (SSP) Dam operators have once again contributed to huge and largely avoidable downstream floods in Gujarat. The water level at Golden Bridge in Bharuch is approaching HFL (Highest Flood Level) today on Sept 17, 2023, but these floods could have been significantly lower and much less disastrous both for SSP upstream and downstream areas if SSP authorities had taken action earlier based on actionable information available and based on sound reservoir operation principles of following a rule curve.

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Rainfall

High Rainfall days in India’s districts in August 2023

September 16, 2023 SANDRPLeave a comment

An analysis of the daily district wise rainfall data from India Meteorological Department (IMD) for the month of Aug 2023, shows that there were 500 (667 in Aug 2022[i] and 431 in Aug 2021) instances when district rainfall of a day in a district was above 50 mm. Such high rainfall instances included 424 (553 in Aug 2022 and 371 in Aug 2021) instances when rainfall was 50-100 mm, 67 (98 in Aug 2022 and 48 in Aug 2021) instances when it was 100-150 mm, 5 (13 in Aug 2022 and 11 in Aug 2021) times it was 150-200 mm and 4 (3 in Aug 2022 and 1 in Aug 2021) above 200 mm. Interestingly, in June 2023 [ii] and July 2023 [iii] there were 451 and 855 instances when rainfall was above 50 mm, while in June 2022 [iv] and July 2022 [v] there were 462 and 809 instances when rainfall in a district was above 50 mm. The July 2023 [vi] and June 2023 [vii] rainfall over India was 13.1% above normal and 10.1% below normal respectively, while the July 2022 [viii] and June 2022 [ix] rainfall all over India was 16.8% above normal and 8% below normal respectively.

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Hydro Disaster

More Himachal Pradesh Hydro Projects damaged in flashfloods in July-Aug 2023

September 13, 2023January 3, 2024 SANDRPLeave a comment

(Feature Image: Heavy vehicles stuck in Machchhetar nulla near Kuther HEP Adit 3 tunnel in Bharmour tehsil of Chamba after August 25, 2023 cloud burst induced flash flood. Image Source: Screen shot of Himachali Vlogger Balwant Kapoor You Tube video)

In July and August 2023, two more hydro electric power (HEP) projects have faced cloud burst induced flash flood destruction in Himachal Pradesh. The first one is Kuther HEP in Chamba district and the second one is Pittkari HEP in Mandi district. The details of 2 HEPs (14 MW GreenKo HEP in Sutlej basin, Shimla and 66 MW Dhaulasiddh HEP in Beas basin, Hamirpur) earlier impacted by cloudbursts induced deluge in last week of June 2023 can be seen here.

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AFRICA · Dam Disaster

Floods worsened by Dams collapse lead to deaths of thousands in Libya

September 13, 2023September 18, 2023 SANDRPLeave a comment

Collapse of two dams upstream of the coastal Derna city in NE of Libya, the North African Mediterranean country in the night of Sept 10, 2023, leads to deaths of 5200 and over 10000 missing. This is the worst ever flood disaster of Northern Africa in last 130 years of recorded history. The storm had a climate change footprint, but the city of Darna suffered this fate largely due to dam collapses. This underlines the threat that the dams pose in changing climate. (Feature image above: Remains of a damaged dam upstream of the Derna city in Libya, N Africa in Sept 2023 disaster.)

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