India Meteorological Department (IMD) divides a water year (June 1 to May 31) into four seasons: Monsoon: (June 1 to Sept 30), Post monsoon (Oct 1 to Dec 31), Winter (Jan 1 to Feb 28/9) and Pre Monsoon (March 1 to May 31). For rainfall during all these seasons, IMD’s hydro-meteorological website[i] provides a lot of data on daily basis, including daily district wise rainfall, state-wise, sub division wise and river wise daily rainfall maps among many other weekly, monthly and seasonal products. However, one problem with it is that none of this information is archived. So if you missed seeing or downloading available data on any date, there is no way to look at it even next day. This is even true of the seasonal rainfall maps, unfortunately.
Most observers look at the monsoon rainfall data, which is clearly the most important season, without doubt. However, the rainfall in other seasons is also very important from a number of perspectives.
Here we are giving a detailed account of the pre-monsoon season rainfall that India received in the season just ended on May 31, 2020, including state wise, sub division wise, river wise and also district wise figures. Along with it, we also provide the figures of post monsoon figures for the just concluded water year. For the winter season (Jan-Feb 2020) we have only the figures for Jan 2020 since we missed downloading the Feb 2020 figures. We had already provided the monsoon 2019 figures through two blogs in October 2019[ii].
Continue reading “State wise rainfall Pre Monsoon 2020 & Post monsoon 2019”
The Oct 2019 rainfall all over India was 109.7 mm, 44% above normal expected rainfall of 76 mm, following 53% above normal in Sept 2019. The rainfall this month has been unusual and has had some major impacts. One of the reasons has been that the SW monsoon withdrawal continued well into Oct 2019, when it almost always gets over by the end of Sept. There were also several cyclonic circulations and depressions mostly from Arabian sea. Continue reading “44% above normal rainfall in Oct 2019 creates hopes for Rabi, Disaster for Kharif crops at many places”
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”
The New Indian Express published a most remarkable report on Aug 24, 2019[i]. It said, among other things: “The district administration of Uttara Kannada will seek an inquiry report from the managing director of Karnataka Power Corporation Limited on untimely release of water from Kadra dam to Kali River, which caused flood in Kadra, Mallapur, Kaiga township, Hanakon, Kharge Jooga island, Kinnar, Siddar, Vailawada and many villages in Karwar taluk in the first week of August. 5,000 people from these villages were shifted to rehabilitation centres in Karwar and other villages. Half of the Kaiga township was inundated and employees of Kaiga Atomic Power Station had to use boats to reach the nuclear power plants… The district administration was not informed about the increasing inflow into Kadra dam and outflow into the river. Finally, DC Harish Kumar K, ZP CEO M Roshan and then SP Vinayak Patil camped in Kadra and took over the control of the dam due to the failure of dam officials. They managed the outflow of the dam for a couple of days. Deputy Commissioner Harish Kumar K said the district administration will write to KPCL MD seeking an inquiry on water released from dams to Kali river.” Continue reading “Unprecedented Dam flood situation in Uttara Kannada in Aug 2019”
Belagavi district (earlier known as Belgaum) in Northern Karnataka is the worst affected among the Krishna Basin Flood affected districts in August 2019. As the state Chief Minister and Union Home Minister visit the area to take stock of the situation, it would help to understand the reasons for these unprecedented floods. Continue reading “Aug 2019 Krishna Basin floods in Karnataka & the Role of Dams”
Krishna River Basin is in for worst floods than the previous big flood of August 2005. Already at eight sites, the water level has already crossed the previous HFL – Highest Flood Level recorded by CWC (Central Water Commission), at four sites each in Maharashtra and Karnataka, almost all on different tributaries. Continue reading “Aug 2019 Krishna Basin Floods in Maharashtra – Karnataka: How dams harming rather than helping”
Karnataka is one of the leading states to witness the devastating effects of rampant sand mining. Between 2015 and 2018, the state has officially registered 20,779 cases of illegal sand mining, and 9,599 FIRs.
The state govt is receiving approximately Rs 150 crore per year as royalty from legitimate sand mining. As per estimates, the state govt is losing around Rs 200 crore per year due to illegal sand mining.
According to cement manufacturing companies’ data, around 18 million tonnes (MT) of cement is sold in the state every year. The cement-sand mix ratio is either 1:4 or 1:6 (four or six bags of sand per cement bag). Even if 1:4 ratio is taken, 72 MT of sand is approximately used in the state every year.
The official data from the Department of Mines and Geology shows that from the blocks permitted by it, a total quantity of 30 MT of sand (from all types of blocks – river sand, patta land, blocks allocated to govt departments, and manufactured sand) is produced in the state. Thus, there is a difference of at least 42 MT sand compared to the cement sold in the state.
Continue reading “Karnataka Sand Mining 2018: Hopeless, But Action Packed!”
The tendency of filling up reservoirs in the beginning and middle of monsoon season have been leading to avoidable flood disasters in the country. Apart from Kerala flood 2018, which was aggravated by mismanagement of reservoirs, various reports show that reservoirs in river basin of Cauvery, Krishna, Godavari and Ganga were also filled up well before the end of South West monsoon season. Resultantly there were many man made flood spells in downstream areas affecting lives and livelihoods of people.
After highlighting role of dams in floods in Kerala and how improper dam operation affected people in Assam and Himachal Pradesh, this third and concluding part throws light on other dam induced flood (and canal breach) incidents in 2018. Continue reading “Dams Floods 2018: Filling up Dams well before Monsoon end, Invitation to Disaster”
Even as the rainfall during South West Monsoon of India during June Sept 2018 was 9.4% below normal, a number of HFL (Highest Flood Level) crossing flood events were recorded on CWC’s (Central Water Commission) Flood Forecasting (FF) website[i]. Since CWC’s FF site does not provide archived information or comprehensive list of such events, we are here putting together a list of such events that we had noted during the SW monsoon, for future records and also understanding trends of high floods. Continue reading “HFL crossing flood events during India SW Monsoon 2018”
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.
Continue reading “Monsoon 2018 Overview: Serious Anomalies Hidden by Macro Figures”