During southwest monsoon season 2024, SANDRP has tracked at least 64 flood forecast and flood monitoring sites where the respective rivers have crossed the highest flood levels (HFL). Here we present detailed analysis of these sites along with some key observations and other relevant information. SANDRP’s previous reports on the subject can be seen here: HFL breach incidents in 2018, 2019, 2020, May-Sept 2021, Oct.-Nov 2021, May-June 2022, July-October 2022, June-October 2023.
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DRP 14×24: Big Dams, Long distance water will not solve Urban Water Crisis
In a pointed article this week, Sachin Tiwale rightly writes that Mumbai does not need more dams, but needs to fix the distribution of more than enough water that it gets currently. Same is the case with highly capital and energy intensive 5th stage of Cauvery Water Supply being inaugurated on Oct 16 by the Karnataka Chief Minister and Deputy CM for Bangalore, advertised through full page advertisements today (Oct 14) in newspapers in Bangalore.
What the India’s cities need is to exhaust the potential of local water resources, including rain water, local water bodies including rivers, groundwater recharge, recycle and reuse of treated sewage and also demand side measures, including fixing the distribution and reducing transmission and distribution losses. All of this needs attention through a National Urban Water Policy that will also fix the Urban Water Governance.
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Yamuna Manthan 031024: Threatened River Wetlands
(Feature Image: Soor Sarovar Bird Sanctuary, along with the river Yamuna, is considered to be green lung of the Agra city. Source: ToI report Six-member committee to probe development of Agra Trade Centre in Soor Sarovar eco-zone. Nov. 01, 2018)
The waterbodies, lakes, wetlands in Yamuna basin continue to face damages and threats from many quarters, including concerned govt departments. In latest examples of this, there are reports of Uttar Pradesh govt’s plan to reduce the eco-sensitive zone (ESZ) of Keetham lake to zero. The wetlands also known as Sur Sarovar is a large ox bow lake formed by Yamuna River in Agra. It is a protected bird sanctuary and has been designated a Ramsar site in August 2020. In Sept. 2022, the Supreme Court had directed the govt to increase lake’s ESZ to 799 ha from 403 ha.
Similarly, the Uttar Pradesh govt departments have also been delaying process to notify Dhanauri wetlands as a Ramsar site in Greater Noida. The case is going on in NGT (National Green Tribunal) for the past many years. In the recent hearing held on Sept. 26, the NGT asked govt department to explain reasons behind delay in notifying the wetlands apart from directing it to remove water hyacinth chocking the wetlands. The next hearing will be held on Jan. 27, 2025.
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Yamuna SW Monsoon 2024: Upper Segment Misses Flood
(Feature Image: Yamuna river at Mawi site in Kairana, UP in Sept. 2024)
After remarkable deluge in 2023, the upper segment of Yamuna river has seen no significant flood spell all through the just concluded southwest monsoon 2024. This is unusual as the river generally witnesses at least a couple of low or medium flood spells in this segment every year.
However, this year the discharges from Hathnikund Barrage (HKB) in Haryana did not cross 1 lakh cusec figure even a single time. The peak discharge from the barrage was 87,017 cusecs at 06:00 hour on 26.09.2024.
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DRP 300924: Focus on River Studies
Rivers are the most important ecosystems (eco here includes ecology and economy) and yet possibly least studied entities. Some news below this week about some river studies brings the focus on need to take up many more river related studies.
Most important aspect of river related studies is the need for credible, independent studies, not influenced by the needs of the governments. Otherwise, the government is likely to not only influence the study, but also decide not to make it public as they did in case of the studies related to Joshimath town and role of Chamoli disaster.
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DRP 160924: Urban Flood lessons from Vadodara, Vijaywada
(Feature Image: Vadodara: A flooded area after heavy monsoon rainfall, in Vadodara, Aug. 27). Photo Credit: PTI/The Hindu)
Like every monsoon, a number of cities have faced catastrophic floods in SW monsoon this year. Vadodara and Vijaywada have got the media attention more than any other city for urban floods this year. In both cases a number of factors are common: role of upstream dams, encroachment on water bodies including rivers, lakes, streams, role of illegal sand mining particularly in Vijaywada, not having learnt any lessons from past flood disasters.
It is interesting to see Andhra Pradesh CM hinting at bringing HYDRAA like enforcement institution to remove encroachments on Budameru and other water bodies. Considering the nature of his politics and track record, it is doubtful if this NDA CM will take such a bold step, but it is certainly worthy of consideration for almost all urban areas in India.
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Lower Yamuna Basin: 11 Rivers Crossed old HFLs in just 2 days in Sept 2024
(Feature Image: Yamuna rivers in severe flood situation at Pachnada in Etawah, UP on Sept. 14, 2024. Image source Udaybhan)
It is interesting to see that at least 11 rivers at as many flood monitoring sites of Central Water Commission (CWC) located in Bundelkhand region (4 sites) and lower Yamuna basin (7 sites) have crossed old Highest Flood Level (HFL) just in 2 days on September 12-13, 2024. These sites are in 3 different states of Madhya Pradesh (7 sites), Uttar Pradesh (3 sites) and Rajasthan (1 site).
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August 2024: Tonga Dam Breach floods Madhya Pradesh villages
(Feature Image: Breach in Tonga dam. Source: ETV Bharat)
A breach in earthen Tonga dam has flooded half a dozen villages in Sabalgarh tehsil of Morena district in Madhya Pradesh. The breach occurred in intervening night of August 12-13, 2024. As per reports, the dam first overflowed following rainfall, leading to the breach.
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DRP 090924: Question marks over Yettinahole should not be buried under money spent
(Feature Image: File photo of Yettinahole Project. Source: Daijiworld)
The Yettinahole project has seen protests and question marks right from the time when the project was proposed, none of them have been convincingly answered. As the Karnataka Chief Minister and his deputy commissioned a small part of it, those question marks remain as relevant today, including its hydrological viability, environmental impact assessments and sustainability, with hugely weakening of the western ghats by such major interventions without any credible impact assessments. (see: https://sandrp.in/2013/09/18/yettinahole-diversion-an-imprudent-rs-100-billion-proposition/)
It is good to see CWC and MoEF have also raised some questions and asked report even at this stage. One however expects CWC to raise such questions much earlier in the project cycle and before the project becomes fait accomplice. Else, it seems more like politicking. MoEF could have raised issues of violations before the violations happened on ground and should have refused to provide piece meal forest clearances as it has alleged.
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Andhra Pradesh: Prakasam Barrage Damaged by ‘Sand Boats’ Again
(Feature Image: Sand boats hit Prakasam Barrage gate no 69 while irrigation officials release 11.24 lakhs cusecs of flood water in Vijayawada on Monday (Sept. 02, 2024). Image Source: Deccan Chronicle)
Amid the unprecedented flood spell in Krishna river passing through the Prakasam barrage located in Vijaywada city of NTR district in Andhra Pradesh, an incident of ‘sand boats’ getting stuck and damaging the barrage in early morning of Sep. 2, 2024, has been reported. The number of boats varied from three to five. The incident became a cause of worry for the structural safety of the barrage.
The New Indian Express report mentioned above reported, quoting irrigation officials that all 70 gates of the barrage were lifted at 2200 hours on Sept. 2, 2024, passing 11.03 lakhs cusecs of water, highest in 70 year history of the barrage. The report stated: “Previously, the Krishna River saw historic floods from October 2 to 13, 2009, when the maximum inflow recorded at Prakasam Barrage was 11,10,404 cusecs at 11 pm on October 5.”
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