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.
Continue reading “Overview of CWC Flood Forecasting Sites 2018: East India “
On Aug 5, 2018, SANDRP had uploaded blog[i] titled: “Overview of CWC’s Flood Monitoring & Forecasting in North East India”. CWC posted its 3-page reply to it around 7 pm on Aug 7, 2018.
Firstly, we welcome CWC’s reply to SANDRP blog. Here some responses to the content of what CWC has replied. Continue reading “Reply to CWC response on SANDRP’s article on CWC’s flood forecasting in NE India”
When Dhansiri river broke the highest flood level mark at Numaligarh site in early hours of Aug 2, 2018 in Golaghat district in Assam, it was not only completely out of the blue, the whole episode was unprecedented.
The earlier Highest Flood Level of Dhansiri River at Numaligarh was 79.87 m. The new HFL, it seems, was 80.18 m, full 31 cm above the previous HFL. This is rather rare, normally the new HFL would be a few cm higher, not almost one third of a meter. Secondly, the water level remained above 79.87 cm, the old HFL, for over 60 hours. This is also unusual, normally the water level rarely remains above HFL for more than a day or so. Thirdly, the earlier HFL was achieved on Sept 24, 1985, so this sudden episode of flood was breaking 33 year old record. Continue reading “Role of Doyang Dam in bringing unprecedented floods in Golaghat”
Central Water Commission (CWC) measures and monitors water level at 700 hundred Flood Forecasting site in the country. It publishes this information on its Flood Forecast website[I]. The website has three ways to get this information: Data Flow Map, List Based Exploration, and Hydrograph view. The Hydrograph view provides information for past 72 hours, supposed to be updated every hour. This is in addition to the list of current forecasts.
As per the website 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.
In order to better understanding the CWC’s flood monitoring and forecasting work, in this article we have given state wise list of CWC’s Level Forecast, Inflow Forecast and level monitoring sites in North East India. For better understanding, we have also included part of West Bengal that is in Brahmaputra basin here, in addition to the 8 North Eastern states. Similar report has been published for North India[II] and we hope to publish reports covering other regions of India too.
Continue reading “Overview of CWC’s Flood Forecasting Sites 2018: North East India”
It’s a bit intriguing situation. IMD and Skymet experts are downgrading the monsoon rainfall from earlier forecast 100% to 92%. Both agencies are predicting even lower rainfall in remaining part of current South West Monsoon. Bihar has received 413.2 mm rainfall till Aug 2, 2018, 22% below normal. And yet, starting Aug 1, CWC’s flood forecasting sites along the Ganga were showing ominous portents. For the first time this monsoon, the sites started showing steep upwards trend. Continue reading “Will sluggish Farakka again create prolonged floods along Ganga in Bihar?”
Flood forecasting is an important activity during monsoon, considering the huge and increasing flood prone area, flood frequency, extent and flood damages. Accurate and timely flood forecasting can hugely help reduce the damages due to floods. Central Water Commission (CWC) is the only agency responsible for flood forecasting in India. To understand the CWC’s flood forecasting better, we have compiled the list of the various flood, inflow forecasting sites and flood monitoring sites in India.
In this compilation, we have given state wise list of CWC’s flood forecasting, flood monitoring and inflow forecasting sites, along with available details like rivers, sub basin, river basin, Warning level, Danger Level, High Flood Level, Full Reservoir Level, Maximum Water Level. As we see below, there are many gaps in this basic information for the sites that are part of CWC’s list.
Continue reading “Overview of CWC Flood Forecasting Sites 2018: North India”
(The figure above is screen shot of CWC Flood forecasting site showing no warning signs even at 5 pm on 230718)
Almost all the big dams in Cauvery Basin are full on the earlier ever monsoon date this year. This includes Krishnaraj Sagar, Mettur, Kabini, Harangi, Hemavathi and Bhavanisagar. They are almost full and have started releasing large flows to the downstream areas. This is when we are past just about six weeks of South West Monsoon, the North East monsoon would come after that. It means that the basin is facing major risk of floods in next 2-5 months. And yet Central Water Commission, India’s flood forecasting agency, seems to be in deep slumber. It has not even bothered to update the flood readings on its designated sites from the 2017 figures. Continue reading “Cauvery is facing very serious flood risk, but CWC is in slumber”
The second wave of floods (first wave came in around May 20-24) this year inA North East India is affecting Tripura, Mizoram and mainly Barak Valley in Assam. Worryingly, while CWC flood forecast site shows water level reaching unprecedented levels in Manu river at Kailashahar in North Tripura District, CWC seems to have NO flood forecasting site in Mizoram. At Matizuri site in Hailakandi district in Barak Valley in Assam, the Katakhal river also approaching its highest ever flood level. In Bangladesh too sites like Amalshid have crossed the HFL. Continue reading “Floods in Tripura, Mizoram, Barak Valley in June 2018”
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”
DECOMMISSIONING OF DAMS
Map of dams removed since 1916 Dams cause considerable harm to rivers. Dams have depleted fisheries, degraded river ecosystems, and altered recreational opportunities on nearly all of our rivers. Today, many dams that were once at the epicenter of a community’s livelihood are now old, unsafe or no longer serving their intended purposes. Learn how USA is working to remove dams and restore the rivers. (Map above is from Ameerican Rivers website, depicting the location of decommissioned dams in USA.) https://www.americanrivers.org/threats-solutions/restoring-damaged-rivers/dam-removal-map/ Continue reading “US Dams, Rivers and People in 2017: There is so much to learn!”