Dams · Floods

Overview of CWC Flood Forecasting Sites 2018: WEST INDIA

Central Water Commission is the only agency doing flood forecasting in India. As per CWC’s Flood Forecasting website[i] the Data Flow Map has information about 226 Flood Forecast Sites in the country comprising of 166 Level Forecast Sites and 60 Inflow Forecast Sites. It also monitors 700 other sites, information is made available through List Based Exploration and Hydrograph View, but no flood forecasting is done for these sites.

In order to better understand the CWC’s flood monitoring and forecasting work, in this article, we have given an overview of CWC’s flood forecasting and monitoring sites in West India. It includes state wise list of CWC’s Level Forecasting, Inflow Forecasting and level monitoring sites in 5 States in West India. Similar report has been published for North India[ii] and North East India[iii] and East India[iv] and South India[v]. This is the last part in the series.  Continue reading “Overview of CWC Flood Forecasting Sites 2018: WEST INDIA”

Dam Induced Flood Disaster

TALE OF A DISASTER FORETOLD: Bansagar Dam ready to create another flood disaster along Sone and Ganga

Bansagar Dam in Sone river basin in Madhya Pradesh already full, violating the rule curve, is ready to create yet another flood disaster along Sone river in Madhya Pradesh and along Sone and Ganga in Bihar.

As per Madhya Pradesh Water Resources Department website’s Flood Report[i] on Sept  10, 2018 afternoon (5pm) (see the screenshots of the website below), ten gates of Bansagar dam were opened by 0.5 m at 11 am on Sept 9, 2018, releasing 35315 cusecs water. The gates were further opened to 0.75 m at 4.40 pm on same date to release 54315 cusecs. A bit curiously, the website is completely silent about any gate opening before that, it implies that no gates were opened this year before 11 am on Sept 9, 2018. The website says the water level at Bansagar Dam reached 341.63 m at 12 noon on Sept 9, 2018, level is given only at intervals of 4 hours during the day. The Dam FRL (Full Reservoir Level) is 341.64 m, so it is likely that when they opened the gates at 11 am on Sept 9, the dam may have already reached FRL. The water level at the dam has remained at 341.58 m till 8 am on Sept 10, 2018,  just 4 cm below the FRL, as per the latest available information. Continue reading “TALE OF A DISASTER FORETOLD: Bansagar Dam ready to create another flood disaster along Sone and Ganga”

Dams · DRP News Bulletin

DRP News Bulletin 10 September 2018: NIDM Lecture on Role of Dams in Kerala Floods

National Institute of Disaster Management, Ministry of Home Affairs, Govt of India invited Himanshu Thakkar, Coordinator of SANDRP,  to speak on the topic at IHC on Saturday. At the packed hall with participants that included members from Central Water Commission, National Disaster Management Authority, Embassies, Media and Civil Society,  the speaker explained how unwise and  unaccountable operation of dams, violating all norms, hugely contributed to the proportions of the Kerala flood disaster. Giving the example of Idukki dam, he showed, how if the dam was operated as per rule curve,  its contribution to the floods could have been reduced by over 50%. Similar is the story of other dams in Kerala.

Continue reading “DRP News Bulletin 10 September 2018: NIDM Lecture on Role of Dams in Kerala Floods”

Disasters · Floods

CWC’s Weekly Reservoir Bulletin: Closer look warns of impending disaster

One of the key source of information about India’s water availability that the government provides and media and everyone else quotes is Central Water Commission’s weekly (updated every Thursday) “Reservoir Storage Bulletin”[i]. The Reservoir Storage Bulletin (RSB) currently tells about water storage position of 91 storage dams across India with total live storage capacity of 161.993 BCM (Billion Cubic Meters), spread over 18 states and 12 river basins. CWC uploads it with a disclaimer: “The Data contained in this Bulletin is as received from the State Government/Project Authorities.” Continue reading “CWC’s Weekly Reservoir Bulletin: Closer look warns of impending disaster”