Dams · Floods

INDIA: Overview of CWC Flood Monitoring Sites

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.

Continue reading “INDIA: Overview of CWC Flood Monitoring Sites”

Dams · Floods

WEST INDIA: Overview of CWC Flood Forecasting Sites

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 “WEST INDIA: Overview of CWC Flood Forecasting Sites”

Dams · Floods

SOUTH INDIA Overview of CWC Flood Forecasting Sites

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 South India. It includes state wise list of CWC’s Level Forecast, Inflow Forecast and level monitoring sites in South India. Similar report has been published for North India[ii] and North East India[iii] and East India[iv]. 

Tamil Nadu There are 3 Level Forecasting, 48 Level Monitoring and 14 Inflow Forecasting sites in Tamil Nadu State. Out of total 65 sites, 19 Level Monitoring and 2 Inflow Forecasting sites are inactive. MWL information is given only for 1 Inflow Forecasting site out of 14. IRRUKKANKUDI, Sathanur and Gomukhi sites are repeated with incomplete information. Out of 48, HFL figure and date is not provided for 25 Level Monitoring sites.

Continue reading “SOUTH INDIA Overview of CWC Flood Forecasting Sites”

Dams · Floods

Overview of CWC Flood Forecasting Sites: East 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 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: East India “

central water commission · CWC - Central Water Commission · Floods

Reply to CWC response on SANDRP’s article on CWC’s flood forecasting in NE 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”

Assam · brahmaputra · Dam Induced Flood Disaster · Floods

Role of Doyang Dam in bringing unprecedented floods in Golaghat

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”

Dams · Floods

Overview of CWC’s Flood Monitoring & Forecasting in North East India

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 Monitoring & Forecasting in North East India”

Bihar · Dams · Floods · Ganga

Will sluggish Farakka again create prolonged floods along Ganga in Bihar?

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?”

Dams · Floods

Overview of CWC Flood Forecasting Sites: North India

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.

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Cauvery · central water commission · Dams · Disasters · Floods · Karnataka · Tamil Nadu

Cauvery is facing very serious flood risk, but CWC is in slumber

(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”