Central Water Commission (CWC) is the only agency doing flood forecasting in India. CWC’s Flood Forecasting (FF) is available on its website[I]. In this article we have given an overview of CWC’s flood forecasting and monitoring sites in East India. It includes state wise list of CWC’s Level Forecast, Inflow Forecast and level monitoring sites in East India. Similar report has been published for North India[II] and North East India[III] and we hope to publish reports covering other regions of India soon. East India includes five states: Bihar, Jharkhand, Chhatisgarh, Odisha and W Bengal.
The first blog on just concluded South West Monsoon 2019, gave the national picture and broad picture of month wise, state wise, sub division wise and river wise rainfall. This blog provides some details of rainfall in districts of each of the 36 states and Union Territories (UTs) of India. Continue reading “Monsoon 2019: State wise rainfall”
As even NITI Aayog report acknowledged in June 2018[i], there is consensus that India is facing dire water crisis, which will only get worse. This was also predicted by the World Bank way back in their 2006 report called “India’s Turbulent Water Future”. But do we have the institutions that are capable of taking us out of this crisis? Remember the current institutes are at the root of our water crisis.
Imagine you have to forecast flood using a mathematical model run on a Pentium processor; or manage your office with typewriters instead of a desktop! How frustrating isn’t it, to manage an office with the near obsolete typewriter or run a flood forecasting model using outdated Pentium processor? Continue reading “Can Outdated Water Institutes steer India out of dire crisis?”
Bihar Unsustainable sand mining causing floods in West Champaran The sand mining in the rivers of West Champaran was causing unmitigated floods in the region, year after year but the govt failed to respond.
– West Champaran district also sees many floods in the non-monsoon months, many of which go unreported, and often, ignored by flood-relief schemes. The natural explanation for the flash floods is that the region is at the foothills and rivers from the hills of bordering Nepal flow through it. But the floods are not entirely a result of natural phenomena. Over the years, excessive sand mining in the river beds has led to ecological imbalances, making rivers and streams flood and even change their course, wreaking havoc in the villages along their banks.
2018 becomes fifth year in a row when India’s south west monsoon has been below normal. In the beginning of monsoon season, Indian Meteorological Department (IMD) has forecasted rains to be normal with rainfall equal to 97 percent of the long term average. However at the end of the season the overall rainfall turned out to be 91 percent, with deficit of 9 percent at national level. However, as we see in this overview, the situation as move from national to local figures, is much different, mostly much worse.
According to IMD’s State Rainfall Map (cumulative) dated 30 Sept. 2018, the country received 804.0 mm rains against 887.5 mm of normal average. Thus the south west monsoon 2018 had 9.4 percent below normal rainfall.
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 Flood sites, information 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, SANDRP has published report of CWC’s Level Forecast, Inflow Forecast and level monitoring sites in 5 zones of North India[ii], North East India[iii], East India[iv], South India[v] and West India[vi]. Through this report, we have presented all the data at one place with links to separate zone wise reports with detailed description.
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”
According to IMD, India is having normal monsoon this year, so far, as per rainfall till date (Sept 1, 2018). Against normal rainfall of 721.1 mm, India has received 676.6 mm rainfall, which is 6.2% below normal, considered within normal rainfall definition as per IMD. So India is having normal monsoon rainfall, says IMD. Let us check this against some ground realities.
However, East and North East India, one of the four regions for which IMD provides rainfall data, has so far had 27% below normal rainfall, while South India had 9% surplus rainfall. Thus, while at all India level, what seems all normal, is average of different, though serious departures from normal rainfall. Let us say this is first level of mirage of normal rainfall. Continue reading “The mirage of normal monsoon”
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 Flood sites, information 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 East India. It includes state wise list of CWC’s Level Forecast, Inflow Forecast and level monitoring sites in East India. Similar report has been published for North India[II] and North East India[III] and we hope to publish reports covering other regions of India too.
A new surge in the developmental interventions in the rivers in India is seen with the implementation of National Inland Waterways Act, 2016. Under this Act, 138 stretches of the rivers, creeks, backwaters, estuaries, etc. in 24 states and 2 union territories will be developed as the ‘national inland waterways’ for the transportation of huge cargo and passenger vessels. Being declared as “national” means that the control and regulation of these waterways will be in the hands of the central government and not state governments. This project of Central Government is being pushed forward with the claims of inland water transport being cost-effect, environmental friendly and safe for the transportation of hazardous goods. However, these so called benefits are neither universal nor automatic as they will be dependent on certain conditions, and will accrue if and when those conditions are met. Development of these waterways will be controlled and regulated by Inland Waterways Authority of India (IWAI). Continue reading “National Inland Waterways in Bihar: Viable or desirable?”