Guest Article by Shri Manoj Misra
Delhiites in early-mid April 2020 were pleasantly surprised to find a much healthy river Yamuna in their city. Social media was full of pictures and videos. Many had resigned not to find a living Yamuna in the city in their lifetime. But the pleasant fact was that the river in the city had indeed as if by magic come alive and presented a picture that was hard to believe. There was a river side which did not stink and looked cleaner than usual.
Continue reading “Sau sunar ki aur ek lohar ki – How a single decision sealed Yamuna’s fate”
India received 957.6 mm rainfall in Just concluded South West Monsoon 2020, during the scheduled 4 month monsoon from June 1 to Sept 30, 2020. This is 8.74% above normal monsoon rainfall of 880.6 as per India Meteorological Department (IMD). This is considered ABOVE NORMAL rainfall, since rainfall is in the range 4-10% above Normal rainfall. This sounds good at national level, but the situation on ground could be very different, if we see the rainfall across the country.
It is noteworthy as per even IMD, monsoon has not yet withdrawn from most parts of the country. But IMD closes its monsoon rainfall account at 0830 hours on Sept 30, so all rainfall after that hour has to be counted in “Post Monsoon” rainfall book, even though the rainfall is very much part of monsoon as per IMD.
Continue reading “Monsoon 2020: District Wise Rainfall”
Flood forecasting is an important activity during monsoon, considering the huge and increasing flood prone area, flood frequency, intensity 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 level forecasting, flood monitoring and inflow forecasting sites in North India, comprising of Union Territories Jammu & Kashmir, Ladakh, Chandigarh, Delhi and states of Himachal Pradesh, Uttarakhand, Punjab, Haryana and Uttar Pradesh. It includes available details like name of river, sub basin, Warning level (WL), Danger Level (DL), High Flood Level (HFL), Full Reservoir Level (FRL), Maximum Water Level (MWL), as applicable. As we see below, there are many gaps in this basic information for the sites that are part of CWC’s list. A similar zonewise overview of CWC’s sites was compiled in 2018 and 2019, which can be seen here: Overview of CWC Flood Forecasting Sites 2018: North India; Overview of CWC Flood Forecasting Sites 2019: North India. We have brought this updated compilation for 2020 as there are large number of changes.
Continue reading “North India; CWC Flood Forecasting Sites 2020; New Website Old Problems”
In the ongoing South West Monsoon, India received 44 year old high surplus rainfall of 327 mm in just concluded Aug 2020, 26.6% above normal rainfall of 258.2 mm. This helped the total June-Aug 2020 rainfall to achieve 10% surplus, with actual rainfall 780.3 mm, 69.9 mm higher than normal rainfall of 710.4 mm. In June the country received 18% above normal rainfall and in July it received 9.9% below normal rainfall, the rainfall at the end of June was just 1.1 mm above normal. Thus almost the entire surplus rainfall is thanks to the rainfall during Aug 2020. The rainfall distribution has however, been far from normal that these figures suggest, as we can see from the state wise and district wise figures below.
Continue reading “District wise rainfall in June-Aug 2020 in India”
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”
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”
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”
In April May 2020, local people and media reports have highlighted riverbed mining practices going on in the Yamuna river impacting river eco-system and riparian communities in gross violation of lock down norms during the Covid 19 crisis.
The first case is reported from Yamuna Nagar district, Haryana on April 30, 2020 by Times of India, where miners had created a bund across the river in the Gumthala-Jathlana area impending the natural flow of the river.
Continue reading “Yamuna facing illegal, in-stream mining during lockdown”
Guest Blog by Mohit M Rao
The impetuous flow of River Betwa is the lodestar for Astha Choudhary and Mohit M. Rao, who for the first 14 days of December 2019, walk from the historic city of Orccha to the confluence of Betwa and Bina rivers. The walk, as part of Veditum’s Moving Upstream fellowship, traverses through forests, endless fields of florescent-green wheat fields, overflowing streams and the rocky banks of the river. Fueling the 270-km journey is the kindness of villagers along the way.
The map below depicts the walking route, stretching to some 270-km, from Orccha to Padoccha in the South where the Betwa and Bina rivers converge. The 14 day journey saw us halt in the friendly homes of villagers or in temples or religious institutions for the night. Three major dams and two barrages were seen along the way. The photo story aims to encapsulate the landscape, its forests and the joys and concerns of the riparian communities for whom River Betwa is a lifeline. Continue reading “Photo blog: Walking Upstream the River-The Betwa and its people”
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”