Disasters · Landslide

Landslides in Kodagu & Western Ghats: A critique of GSI report

Guest Article by Prof Mysooru R. Yadupathi Putty 

Introduction This write-up is with regard to the news-paper reports on the “The Geological Survey of India (GSI) Report on the landslides in Kodagu”. This is based on the information furnished by the news-papers and by the scanned copies of the original report of the GSI. The report attributes the landslides to excessive rainfall and extensive slope modifications due to anthropogenic activities, and puts blame on the people who have been using the land to their benefit. This brief article is written in order to bring it to the notice of the authorities concerned, and the people in general, that some of the observations of the GSI are highly ill-conceived, mutually contradictory and technically unsound. They unnecessarily go to rake up untoward feelings and create an impression that the people of Kodagu (Karnataka’s ‘Male-naadu’, in general) responsible for pulling the wrath of the Nature on to themselves.  The author of this critique is a Hydrologist, who has been working in the region on Runoff processes, Land-use and Soils for nearly three decades. The following is a review of the available material of the report, point by point. Continue reading “Landslides in Kodagu & Western Ghats: A critique of GSI report”

Monsoon · Rainfall

District wise Rainfall in India in June July 2020

During the just concluded first half of the South West Monsoon 2020, India received 453.3 mm rainfall, just 1.1 mm above the normal rainfall of 452.2 mm during the period. The Surplus of  18% rainfall that India received in June 2020 has thus been wiped out by the 9.9% deficit in July rainfall. Normal rainfall in July 2020 is 285.3 mm, while actual rainfall was 257.1 mm. IMD does not provide monthly figures of rainfall for different states, sub divisions and river basins, which it should along with comparison with respect to normal rainfall and rainfall last year.

To get July 2020 rainfall, we will need to use the figures given in this article along with the figures of June 2020 rainfall (see: https://sandrp.in/2020/06/30/district-wise-rainfall-in-india-in-june-2020/). The district wise figures of June-July 2020 rainfall can be seen in this PDF file from IMD: IMD DISTRICT WISE RAINFALL FROM JUNE 1 TO JULY 31 2020.

Continue reading “District wise Rainfall in India in June July 2020”

Indian Meteorological Department · Monsoon · Rainfall

District Wise rainfall in India in June 2020

Here we present the rainfall figures from India Meteorological Department in the just concluded month of June 2020, the first month of SW Monsoon 2020. The overall rainfall at all India level in June 2020 was 196.2 mm, 18% above normal rainfall in the month at 166.9 mm. It was 33% deficit last year.

This is India’s wettest June 12 years, The Times of India reported on July 1, 2020. Agriculture Ministry Data shows that sowing is 68% higher at 31.56 m ha. The June rainfall was 202 mm in 2008, the rainfall this year is the highest since then. All four IMD regions (Northwest, Central, South, East & NE) have recorded surplus rainfall, the surplus is the highest in Central (30.5% surplus) and E-NE (15.7%) regions. North West India had the lowest surplus at 3.5%. IMD Head Mrutyunjay Mohapatra said that whole of India was covered by monsoon on June 26, 12 days ahead of the normal date of July 8.

State wise rainfall Three states had large excess rainfall (above 60% surplus rainfall), namely Bihar, Madhya Pradesh and Sikkim. Eight states/UTs (Union Territories) had excess rainfall (20-59% surplus): Assam, Meghalaya, UP, Chhattisgarh, Maharashtra, Telangana, Andhra Pradesh & Andaman and Nicobar. Nine had deficient rainfall (20-59% deficit): Lakshadweep, Mizoram, Manipur, J&K, Ladakh, Himachal Pradesh, Delhi, Dadar & Nagar Haveli. Rest of India had Normal Rainfall. Continue reading “District Wise rainfall in India in June 2020”

Dams · Sand Mining

Karnataka Sand Mining 2020: Active Collector, Destruction of fish sanctuary & calm collection

Feature image: Extraction of sand from the banks of the Tunga near Chibbalagudde in Tirthahalli taluk posing a threat to the fish sanctuary that hosts 27 species of fish. (The Hindu)

2019 Karnataka sand mining overview showed that the incidents of illegal sand mining were on the rise, state was reportedly consuming around 70 MT (Million Tons) sand annually while the govt was able to produce 30 MT. The govt was losing about Rs 200 crore to illegal sand mining, while about 29,000 cases of illegal stone quarrying and sand mining were detected in past 3 years. Towards the end of 2018, the govt was seen working on 4 separate mining policies for sand, granite, building material and stone crushers to stop the revenue losses.

There were discussions in govt circle promoting M-Sand and importing sand from Malaysia. M-Sand was being produced in 18 districts of state. However there was no clarity on its quality and usage. MSIL had imported 8000 T of sand and sold half of it. Despite facing sand dearth, the govt in Sept. 2018 decided to send imported sand to Kerala. About 0.15 MT Malaysian sand was stuck at two ports.

Continue reading “Karnataka Sand Mining 2020: Active Collector, Destruction of fish sanctuary & calm collection”

Rainfall

State wise rainfall Pre Monsoon 2020 & Post monsoon 2019

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 achieved. 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”

Agriculture · Disasters · Rainfall

44% above normal rainfall in Oct 2019 creates hopes for Rabi, Disaster for Kharif crops at many places

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”

Dam floods · Kali River · Karnataka

Unprecedented Dam flood situation in Uttara Kannada in Aug 2019

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”

Dam floods

Aug 2019 Krishna Basin floods in Karnataka & the Role of Dams

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”

Dam floods

Aug 2019 Krishna Basin Floods in Maharashtra – Karnataka: How dams harming rather than helping

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”