In Oct. 2025, we could find at least 06 flood monitoring sites of Central Water Commission (CWC), where rivers have crossed their Highest Flood Levels (HFL) after the end of South West Monsoon season 2025 on Sept 30 2025. Of the 6 sites, 2 each are in Brahmaputra basin in W Bengal and Ganga basin in Bihar. 1 site Anantharam on Musi river in Telangana is part of Krishna basin and 1 site Marella on Gundlakamma river in Andhra Pradesh is part of East Flowing Rivers between Mahandi and Pennar basin.
Continue reading “India’s Rivers in Extreme Floods in Oct 2025”Category: CWC – Central Water Commission
Rivers Crossing the Highest Flood Levels in Aug 2025
In the third month of South West Monsoon season 2025, we have been able to track at least 23 flood monitoring sites of the Central Water Commission (CWC) where the respective rivers have crossed their Highest Flood Level (HFL). These 23 sites are spread over 5 river basins -11 sites in Ganga basin, 9 sites in Indus basin & 1 each in Mahi, Godavari and Krishna basins.
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Rivers Crossing the Highest Flood Levels in July 2025
(Feature Image: Hydrograph of Pin river at Gulling site in Lahul & Spiti on July 04, 2025)
In July 2025 during the South West Monsoon, we have found rivers crossing their respective Highest Flood Levels (HFL) at least at 12 flood monitoring sites of Central Water Commission (CWC). Of the 12 sites, 11 are in Ganga basin and 1 site is in Narmada basin. The details of all these sites are given in table below. The sixth column of the table is the information about rise in meter (m) over the old HFL, duration (hours-hrs) the river has stayed in extreme floods and number of years (yrs) after the HFL is breached. The 12 sites are spread over 5 states: Madhya Pradesh, Uttar Pradesh, Bihar, Uttarakhand and Jharkhand.
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Himachal Pradesh: Why CWC’s Forecasting is Unavailable Amidst Flood Disaster?
(Feature Image: Screenshot of inactive hydrograph for Solang station on Beas river in Mandi district. Source: CWC Flood Forecast website)
Despite disastrous flood events causing significant destruction to human lives and infrastructures for past three years, the state of Himachal Pradesh has not seen much required improvements in flood monitoring and forecast servicesby the Central Water Commission’s (CWC) to help minimize the destruction toll.
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Hydropower-GLOF Nexus in Chenab Headwaters: Absence of credible studies and accountable governance
Increasing incidences of Glacial Lake Outburst Floods (GLOFs) are being experienced in the Indian Himalayas. One of the most notable examples of GLOF was the Chorabari Lake GLOF that occurred on 16th June 2013 in Kedarnath, Uttarakhand[1] which was triggered by heavy rainfall induced mass movements into the lake. The GLOF devastated villages of Kedarnath, Rambara, and Gaurikund. Around 6,000 people were officially killed, and a significant number of the deaths were linked to the GLOF. Countless bridges and roads were washed away, and about thirty hydropower plants were affected or completely devastated. Several Hydropower projects resulted in exponential losses to life and livelihoods. Whole of Uttarakhand was affected in the disaster, and a significant proportion of it was related with GLOF.
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Oct 2023: CWC Flood Forecast FAILS during Teesta Glacial Floods
(Feature Image: NHPC’s Teesta VI hydro project at Sirwani, Sikkim affected by GLOF deluge on Oct. 04, 2023. Image Source: Weatherman Shubham.)
The Teesta River has witnessed unprecedented scale of floods following South Lohnak Glacial Lake Outburst Flood (GLOF) event in the intermittent night of October 03-04, 2023. The details and impact of the deluge can be seen here. The incident has once again underlined shortcomings in Central Water Commission’s (CWC) flood monitoring and forecasts work.
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July-August 2023: Problems in CWC Flood Monitoring & Forecast
(Feature Image: CWC’s Delhi Railway Bridge forecast site showing abrupt changes in Yamuna water level during unusual flood spell in July 2023)
July and August are peak months of South West monsoon. There has already been flood related destruction in several states including Himachal Pradesh, Punjab, Haryana, Delhi and Uttarakhand so far. Amid these flood spells, SANDRP has observed many serious issues plaguing Central Water Commission’s (CWC) flood forecasting and monitoring work and some of these are described below.
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Rivers Breaching Highest Flood Levels in July 2023
( Feature Image: CWC’s water level gauge set up along Yamuna river at Old Railway Bridge, Delhi. 28 June 2023/ SANDRP)
The analysis of hydrographs being published on Center Water Commission’s (CWC) Flood Forecasting website shows that the previous Highest Flood Levels (HFL) have been breached at least at 34 flood monitoring sites across the country in July 2023. The river basin wise details of all these sites are given in tables below.
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Rivers Breaching High Flood Level in June 2023
In the first month of South West (SW) monsoon season June 2023, there have been Highest Flood Level (HFL) breach incidents at two sites. Both of these sites namely Suklai on Suklai river and DRF on Puthimari river are level monitoring sites located in Baksa district of Assam in Brahmaputra basin.
Interestingly, the old HFL at both sites were attained in 2020 and 2022 only and the old HFLs were breached thrice between June 15 and 20, 2023. The details of old and new HFLs for these sites are given in table below.
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India’s Rivers Crossing Highest Flood Level in Oct 2022
(Feature Image: River Rapti flowing in severe flood situation at Balrampur level forecast site in Balrampur district, Uttar Pradesh on Oct. 07, 2022. Image Source: CWC)
The retreating South West monsoon 2022 witnessed unusual rainfall spells in the first ten days of October eventually resulting in breach of Highest Flood Levels (HFL) at least at 26 stations in the country. In 2021, in entire October, there were just nine instances across India when HFL was breached, compared to 26 already this year. Rainfall across India as on Oct 26 morning as per IMD, is 109.2 mm, already 60% above normal rainfall of 68.3 mm.
26 HFL crossing sites in Oct 2022 comprised of 09 Level Forecast (LF) and 17 Level Monitoring (LM) crossing HFLs. 21 are in Ganga basin, 1 in Narmada basin, 3 in Cauvery basin and 1 is part of East Flowing Rivers (EFR) between Pennar to Kanyakumari basin. Of total sites breaching the HFLs in Ganga basin 13 are in Uttar Pradesh, 3 each in Uttarakhand and Madhya Pradesh and 2 in Bihar.
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SANDRP 