Posts Tagged ‘water’
In just under six weeks from today, the water available per head in India from our major reservoirs will drop under the 100 litres per day mark. This will happen on or around 06 June 2013, give or take a day.
For India’s 59 cities with populations of over a million (this will be so in mid-2013, see ‘India in 2015 – 63 million-plus cities’) this will mean an ever more frantic and dangerous race to secure water stocks by urban water mafia, who plunder public water storage and groundwater aquifers alike.
In the largest of these cities, their water boards claim to supply between 160 and 200 litres per capita per day (lpcd). This amount is roughly in line with what residents in comparably large East and South-East Asian cities are supplied, and is well above the lower end (100 lpcd) offered by the World Health Organisation as the minimum ‘optimal’ daily water stock required by an individual to maintain health and hygiene (100-200 lpcd is the band).
That’s the WHO view, but even in the Tenth Five Year Plan (2002-07) it was recommended that in India’s largest metropolitan cities the minimum must be 150 lpcd and in large non-metro cities the minimum must be 135 lpcd.
But six weeks from now, judging by the rate at which water has been used in 2013 from the 84 major reservoirs, we are not going to have, per head per day, even 100 litres of water. (Also see ‘Big dams, scarce water, thirsty India, uncertain monsoon’.)
How did we get here, so quickly and so dry? On 14 February 2013, the total water stored in the 84 major reservoirs was 68.718 billion cubic metres (bcm). Over the next ten weeks, until 25 April 2013, that total has dropped steeply to 42.304 bcm.
The Central Water Commission monitors the levels of and volumes in these 84 reservoirs, which if they all were full would store 154.421 bcm. These 84 reservoirs, says the CWC, represent 61% of the country’s water stored in reservoirs, which is altogether 253.388 bcm.
Judging by the same rate of water drawal from these 84 reservoirs, we have used over 43 bcm from all reservoirs in ten weeks, depleting our reservoir stock from 112.6 bcm to 69.3 bcm. This also means that in early February 2013, each of us were (notionally) holding a water stock of about 247 litres per day, a stock that was shrinking at a rate of about 1.3 litres per day to reach 152 litres per day in late April. And remember this is notional water stock per head from reservoirs, water that is used for agriculture and industry too.
What will happen between now and 06 June, when that individual stock drops under 100 lpcd? The Indian Meteorological Department has claimed (the usual bland and bored claim, as if monsoon was just another filing cabinet) that we will have a normal monsoon. As usual, the IMD has made no effort to link water with our alarming depletion of litres per head per day (it does link monsoon with GDP though, typically correct politically, typically unconcerned about human, animal and ecosystem need).
And what if the monsoon is late, scanty or erratic, as has happened with every monsoon since 2009? The IMD doesn’t know, your city’s PWD and municipality don’t know. But the water mafia do, and they’re getting very busy.
Why did India’s Ministry of Water Resources not start rationing water use at the beginning of 2013? Data on the water levels of the 84 major reservoirs in the country (kept by the Central Water Commission) show an alarming rate of withdrawal over the period January to March 2013.
Over seven weeks, these reservoirs disgorged 20.525 billion cubic metres (BCM) of water – for industrial, commercial, residential and irrigation purposes. By 14 March 2013, the combined water stock in these 84 major reservoirs was 57.355 BCM – on 24 January 2013 that total had been 77.869 BCM. At this rate of water use, by 09 May 2013 – seven weeks hence – there will be a perilous 36.8 BCM in the major reservoirs, and with the possible first onset of the 2013 south-west monsoon still a month away.
The major reservoirs that have disgorged the most water during this period are: Srisailam (Andhra Pradesh) 2.353 bcm; Hirakud (Orissa) 1.808 bcm; Indira Sagar (Madhya Pradesh) 1.652 bcm; Nagarjuna Sagar (Andhra Pradesh) 1.082 bcm; Ukai (Gujarat) 0.976 bcm; Pong (Himachal Pradesh) 0.913 bcm; Gandhi Sagar (Madhya Pradesh) 0.899 bcm; Rihand (Uttar Pradesh) 0.734 bcm; Bhakra (Himachal Pradesh) 0.668 bcm and Koyna (Maharashtra) 0.598 bcm.
In four parts, 18 chapters, four annexes, illustrated by around 300 figures, the chapters supported by about 100 tables, a separate set of data upon which scenarios rest, the World Energy Outlook 2012 of the International Energy Agency (IEA) is a 690-page behemoth. I can only sketch its merest outline here, and in a fleeting way touch upon the knowledge and information it contains.
Drawing on the latest data and policy developments, the World Energy Outlook 2012 presents projections of energy trends through to 2035 and insights into what they mean for energy security, the environment and economic development. “Over the Outlook period, the interaction of many different factors will drive the evolution of energy markets,” said the WEO-2012. “As outcomes are hard to predict with accuracy, the report presents several different scenarios, which are differentiated primarily by their underlying assumptions about government policies.” We are told that the starting year of the scenarios is 2010, the latest year for which comprehensive historical energy data for all countries were available. What are these four scenarios?
1. The New Policies Scenario – the report’s central scenario – takes into account broad policy commitments and plans that have already been implemented to address energy-related challenges as well as those that have been announced, even where the specific measures to implement these commitments have yet to be introduced.
2. To illustrate the outcome of our current course, if unchanged, the Current Policies Scenario embodies the effects of only those government policies and measures that had been enacted or adopted by mid-2012.
3. The basis of the 450 Scenario is different. Rather than being a projection based on past trends, modified by known policy actions, it deliberately selects a plausible energy pathway. The pathway chosen is consistent with actions having around a 50% chance of meeting the goal of limiting the global increase in average temperature to two degrees Celsius (2°C) in the long term, compared with pre-industrial levels.
4. The Efficient World Scenario has been developed especially for the World Energy Outlook 2012 (WEO-2012). It enables us to quantify the implications for the economy, the environment and energy security of a major step change in energy efficiency.
I have extracted five important messages from the summary which are connected to the subjects you find in this blog – food and agriculture, consumer behaviour and its impacts on our lives, the uses that scarce energy is put to, the uses that scarce water is put to, the ways in which governments and societies (very different, these two) view food, energy and water.
Five key messages:
“Energy efficiency can keep the door to 2°C open for just a bit longer.” Successive editions of the World Energy Outlook have shown that the climate goal of limiting warming to 2°C is becoming more difficult and more costly with each year that passes. The 450 Scenario examines the actions necessary to achieve this goal and finds that almost four-fifths of the CO2 emissions allowable by 2035 are already locked-in by existing power plants, factories, buildings, etc. No more than one-third of proven reserves of fossil fuels can be consumed prior to 2050 if the world is to achieve the 2°C goal.
“Will coal remain a fuel of choice?” Coal has met nearly half of the rise in global energy demand over the last decade, growing faster even than total renewables. Whether coal demand carries on rising strongly or changes course will depend on the strength of policy measures that favour lower-emissions energy sources, the deployment of more efficient coal-burning technologies and, especially important in the longer term, CCS. The policy decisions carrying the most weight for the global coal balance will be taken in Beijing and New Delhi – China and India account for almost three-quarters of projected non-OECD coal demand growth (OECD coal use declines).
“If nuclear falls back, what takes its place?” The anticipated role of nuclear power has been scaled back as countries have reviewed policies in the wake of the 2011 accident at the Fukushima Daiichi nuclear power station. Japan and France have recently joined the countries with intentions to reduce their use of nuclear power, while its competitiveness in the United States and Canada is being challenged by relatively cheap natural gas. The report’s projections for growth in installed nuclear capacity are lower than in last year’s Outlook and, while nuclear output still grows in absolute terms (driven by expanded generation in China, Korea, India and Russia), its share in the global electricity mix falls slightly over time.
“A continuing focus on the goal of universal energy access.” Despite progress in the past year, nearly 1.3 billion people remain without access to electricity and 2.6 billion do not have access to clean cooking facilities. Ten countries – four in developing Asia and six in sub-Saharan Africa – account for two-thirds of those people without electricity and just three countries – India, China and Bangladesh – account for more than half of those without clean cooking facilities. The report presents an Energy Development Index (EDI) for 80 countries, to aid policy makers in tracking progress towards providing modern energy access. The EDI is a composite index that measures a country’s energy development at the household and community level.
“Energy is becoming a thirstier resource.” Water needs for energy production are set to grow at twice the rate of energy demand. The report estimates that water withdrawals for energy production in 2010 were 583 billion cubic metres (bcm). Of that, water consumption – the volume withdrawn but not returned to its source – was 66 bcm. The projected rise in water consumption of 85% over the period to 2035 reflects a move towards more water-intensive power generation and expanding output of biofuels.
Such is the barest glimpse of the WEO-2012. There are a number of aspects of the Outlook which deserve more scrutiny with a view to learning energy use and misuse, and this will be expanded upon in the weeks ahead.
The national drought summary for the USA at the beginning of July 2012 shows how relentless the advance of the great dry has been in the country. Drought conditions are present in 56% of the continental USA, according to the weekly Drought Monitor. That’s the most in the 12 years that the data have been compiled – it was 55% in August 2003.
The Drought Monitor report said arid conditions intensified in large sections of the country, with only southern Texas reporting some improvement. “Light precipitation (0.5 inch or less) fell on most areas of dryness and drought, with only scattered areas reporting more than an inch, primarily in the northern Plains, lower Mississippi Valley, southernmost Great Lakes region, Appalachians, mid-Atlantic region, and southern Texas,” said the summary. “Unfortunately, where rain did fall (outside southern Texas), it was not enough to make up for blistering heat that covered the Nation’s midsection, reaching the central and southern Atlantic Coast by the end of the workweek.”
Both the number of record highs in the past week, (See ‘Climate change truth wallops USA hard’) and the areas with record and near-record dryness over the last one to three months are numerous. The increasing dryness is beginning to take a significant toll on crops, pastures, and rangelands. In the primary growing states for corn and soybeans (18 each), 22% of the crop is in poor or very poor condition, as are 43% of the pastures and rangelands and 24% of the sorghum crop. In addition, the area burnt by wildfires expanded significantly. Over 1.9 million acres have been engulfed since the start of the year, and an increase of 38% in just the past week. [The Drought Monitor pdf map is available here.]
The India Meteorological Department (IMD) has released the long-awaited update of its long range forecast for the 2012 monsoon.
Stripped of its scientific jargon, this is what the update has said. There is a July model and an August model. For both months, there are three forecast categories: below normal in which rainfall in less than 94% of the long period average (LPA), normal in which the rainfall is between 94% and 106% of the LPA, and above normal in which rainfall is more than 106% of the LPA. Under the three categories, the forecast probabilities for July are (in the same order) 36%, 41% and 23% and for August they are 42%, 36% and 22%. Under any combination of probability therefore, this means that both July and August are going to be drier than usual, and coming on top of an unusually dry June, the scenarios for water availability and for agriculture come early September are all looking tough.
The volatility of the 2012 monsoon over north-eastern India can be seen in the images of the district weekly rainfall deviations for those states. Please bear in mind that with the late beginning of the 2012 monsoon, the week of June from 07 to 13 was for all practical purposes the first monsoon week. The colours signify major deviations – red for 50% of the average and below, green for 150% of the average and above. In Arunachal Pradesh, for the first week the average rainfall in districts was around 45%, the second week it was 41% and the third week it shot up to 124% – red is evenly scattered through the districts in the first two weeks and green districts appear in the third week.
In Assam, the first week’s average for all the state’s districts was 65% of the long period average, with red dominating. In the second week the average was 103%, with ‘red’ districts declining and a few greens appearing. In the third week the average zoomed to 184% with most districts being ‘green’. In neighbouring Meghalaya, the average for the districts in the three weeks was 63%, then 51% and then a steep rise to 225% in the third week. In stark contrast Nagaland and Manipur have for the duration of these three weeks seen a combined district rainfall average of 33% and if we remove the ‘green’ districts from both states of the third week, we get a dismal 15% average – it is of course quite likely that there are data anomalies in the numbers that IMD has collected from the north-east region, as automated weather stations that actually work are likely to be fewer in number than in ‘mainland’ India. (There is a spreadsheet for this data. If you want the data till date please write to me here: makanaka at pobox dot com.)
In the update, there is also a separate set of forecasts and probabilities for four major regions of India – North-West India, Central India, South Peninsula and North-East India. There are small variations for each of these in the definitions of below normal, normal and above normal. Here are the forecast probabilities for the regions:
The list of states in each of these four geographical regions is:
Northwest India: Jammu and Kashmir, Himachal Pradesh, Punjab, Rajasthan, Haryana, Chandigarh, Delhi, Uttaranchal and Uttar Pradesh.
Northeast India: Arunachal Pradesh, Meghalaya, Assam, Nagaland, Manipur, Mizoram, Tripura, Sikkim, West Bengal, Bihar and Jharkhand.
Central India: Gujarat, Madhya Pradesh, Chattisgarh, Maharashtra, Goa and Orissa.
South Peninsula: Andhra Pradesh, Karnataka, Tamil Nadu, Kerala, Lakshadweep and Andaman and Nicobar Islands.
The first stage forecast for the nation-wide season rainfall was issued on 2012 April 26 and this update was issued on 2012 June 22. The summary of the first stage forecast is:
“Southwest monsoon seasonal rainfall for the country as a whole is most likely to be Normal (96-104% of Long Period Average (LPA)) with the probability of 47%. The probability (24%) of season rainfall to be below normal (90-96% of LPA) is also higher than its climatological value. However, the probability of season rainfall to be deficient (below 90% of LPA) or excess (above 110% of LPA) is relatively low (less than 10%). Quantitatively, monsoon season rainfall is likely to be 99% of the LPA with a model error of ± 5%. The LPA of the season rainfall over the country as a whole for the period 1951-2000 is 89 cm.”
The IMD has said that it has taken into account the experimental forecasts prepared by the national institutes like Space Applications Centre, Ahmedabad, Centre for Mathematical Modeling and Computer Simulation, Bangalore, Center for Development of Advanced Computing, Pune and Indian Institute of Tropical Meteorology, Pune. Operational/experimental forecasts prepared by international institutes like the National Centers for Environmental Prediction, USA, International Research Institute for Climate and Society, USA, Meteorological Office, UK, Meteo France, the European Center for Medium Range Weather Forecasts, UK, Japan Meteorological Agency, Japan Agency for Marine-Earth Science and Technology, Asian-Pacific Economic Cooperation (APEC) Climate Centre, Korea and World Meteorological Organization’s Lead Centre for Long Range Forecasting – Multi-Model Ensemble have also been taken into account.
The overview of the ‘Houselisting and Housing Census’ has been released by the Census of India 2011. Here are the main points and highlights, in mostly the language and with the focus given by the Census office:
The Census of India 2011 was conducted in two phases. The first phase, called the “Houselisting and Housing Census”, was undertaken a few months prior to the second phase termed as “Population Enumeration”.
The objective of the Houselisting and Housing Census Operations is to identify each building/census house and also to ascertain the quality of the census house, amenities accessible to it and assets available to the households living in those census houses.
The enumerators collected the information by visiting each and every household and canvassing a written questionnaire called the Houselist and Housing Schedule. In Census 2011, a period of 45 days was allotted for this purpose, between April 2010 to September 2010. Approximately 2.5 million enumerators and 200,000 supervisors were engaged for this operation. What made the exercise even more challenging was the fact that the information was collected on 35 items and 15 million Census Schedules were canvassed in 16 Indian languages.
The Houselisting and Housing Census shows that the census houses increased from 250 million to 330 million. There is an increase of 60 million census houses for residential and partly residential purposes. The data indicates that the housing gap has reduced. There is an improvement in the construction material used for roof, wall and floor. Thus there is a substantial improvement in the quality of housing both in rural and urban areas.
* Amenities available with the households – 87% of households are using tap, tube well, hand pump and covered well as the main source of drinking water while 43.5 percent use tap water. Only 47% of households have source of water within the premises while 36% of households have to fetch water from a source located within 500 m in rural areas/100 m in urban areas and 17% still fetch drinking water from a source located more than 500 m away in rural areas or 100 m in urban area.
* Main source of lighting – 67% households use electricity which shows an increase of 11pt over 2001. The rural-urban gap has reduced by 7 percentage points from 44% in 2001 to 37%.
* 58% of the households have a bathing facility within the premises, showing an increase of 22 pts over 2001.
* Around half the households have drainage connectivity with two-third have the open drainage and one-third have the closed drainage.
* 47% of the households have a latrine within premises, with 36% households having a water closet (WC) and 9% households having a pit latrine. There is an 11 pt decline in households having no latrine from 64% to 53% in 2011.
* 61% households have a kitchen with 55% having the kitchen within the premises and 6% outside. Two-third of the households are using firewood/crop residue, cow dung cake/coal etc. and 3% households use kerosene. There is an increase of 11 pts in use of LPG from 18% in 2001 to 29% in 2011.
* Communication – there is an increase of 16% in television and a corresponding decline of about 15 pt in use of radios/transistors. Less than 1 out of 10 households have a computer/laptop with only 3% having access to internet. The penetration of internet is 8% in urban as compared to less than 1% in rural area. 63% households have a telephone/mobile with 82% in urban and 54% in rural area. The penetration of mobile phone is 59% and landline is 10%.
* Transport – 45% of the household have a bicycle, 21% two wheelers and 5% four wheelers. There is an increase of 9 pt in two wheeler and 2 pt in four wheelers, with bicycle showing increase of 1 pt only. 59% of the households use banking facilities with 68% in urban and 54% in rural areas. The rural urban difference has reduced from 19 to 13 pt.
* 18% of the household do not have any of the specified assets.
An interesting short video from FAO on water management and cultivating responses to indeterminate (or insufficient) water stocks. In southern India, the climate is becoming unpredictable and drought more common , says FAO – and this indeed is the case for peninsular India in general. Indiscriminate pumping from shallow aquifers shared by many farmers has caused abnormal drops in water levels, most notably in northern and north-west India, in the states of Punjab and Haryana which were the Green Revolution model states. When a well goes dry, a farmer loses his crop. In Andhra Pradesh, said FAO, 6,000 farmers have been trained in groundwater management by a project run by Indian NGOs and guided by the UN’s Food and Agriculture Organization. They have learned to monitor how much water is available underground at the start of the growing season. Then they only plant crops that need that much water.
Here is some background on the legacy of irrigation in India, and the administrative functions that large irrigation projects provided the state, whether that state was colonial (as a dominion of Great Britain) or independent (Republic of India). “At the beginning of the eighteenth century, India was the ‘irrigation champion’ of the world. While the colonial government initially neglected the maintenance and upkeep of the numerous but mostly small irrigation structures, it soon spotted the potential for large-scale canal irrigation as an economic enterprise and took to canal building as a business on a massive scale. In those days, there was much dissatisfaction with irrigation management among observers and investors who expected much higher financial return on irrigation investments.”
This is written by By Tushaar Shah in the chapter, ‘Past, Present, and the Future of Canal Irrigation in India’, found in ‘India Infrastructure Report 2011 – Water: Policy and Performance for Sustainable Development’, (Oxford University Press 2011).
“Yet, in retrospect, around 1900, canal irrigation systems in India were arguably in a far better state than today in terms of their operation and maintenance (O&M), productivity impacts, and financial returns. If we look at the situation ten years ago, around 2000, while the new welfare state had kept alive the colonial tradition of big time canal construction, the management of canal irrigation had become pathetic in terms of all the criteria on which it excelled a century ago.”
“The dominant view about the way out is that farmer management through water user associations can restore canal irrigation to its old glory. However, this may not be the correct thinking. Shah has argued that the larger socio-technical fundamentals in which canal irrigation can thrive in a smallholder agrarian setting were all mostly present around 1900 and are all mostly absent today.”
The colonial irrigation management was a high input-high output affair, said Shah. A vast authoritarian bureaucracy reaching down to the village level used forced labour to maintain canal network, managed water distribution, and undertook ruthless water fee recovery on all lands deemed to be irrigated.
In the canal commands, the canal water ‘tax had to be paid regardless of whether or not use was made of the canal in a particular year or whether or not there was a reliable supply from the canal’ (Hardiman 2002: 114). This, according to Hardiman, encouraged, even forced, farmers to grow valuable commercial crops to generate cash. It also resulted in much litigation from dissatisfied zamindars who put pressure on canal managers to ensure water delivery and maintain canals. The amounts provided for O&M were substantial so that deferred maintenance was minimal.
As a commercial venture, the performance of canal irrigation has decidedly declined over the past 100 years. D.R. Gadgil, the pioneer of Indian economic planning, had argued that, in a poor agrarian economy like India, public irrigation investments should be judged on their social and economic returns rather than their financial returns. Soon after Independence, irrigation charges were drastically reduced; and even these declined to a small fraction. Have public irrigation investments in free India delivered the irrigation—and the socio-economic returns they were designed for as Gadgil had hoped? Unfortunately, the answer to the question is ‘No’; and there lies the heart of the problem. The financial rot was the harbinger of a much deeper crisis of stagnation and decline in public irrigation systems whose social and economic returns turned out to be far smaller than imagined.
Xinhua has reported that Southern China is still suffering from severe drought. Residents of Guizhou, Yunnan and Chongqing provinces are trying to find alternative water sources. Over five million people in Yunnan have been suffering from drought since winter. That’s one-eighth of the province’s population. These pictures from China Daily illustrate the severity of the drought.
Kong Chuizhu, Deputy Governor of Yunnan province, said, “The whole province has raised more than two hundred million yuan in funds to fight the drought. We’re putting access to drinking water as the primary focus.” According to Kong Chuizhu, nearly 2 million people now have some access to safe drinking water, however the remaining 3 million are still thirsty.
In Chongqing’s Jiangjin district, there hasn’t been a drop of rain for almost 50 days. It’s the most serious shortage in years as the area’s rainfall is half that during the same time last year – local authorities are distributing drinking water to people.
There are 81 major reservoirs that India’s water bureaucracy monitors, every day and every week. Weekly data is released regularly, but in a roundabout way meant to ensure that there is little chance of the interested observer maintaining a running data set. There are no readily available numbers, and what there is must be extracted laboriously from badly formatted reports. It’s not a pleasant task, but since India’s towns and cities, farm families and rural settlements depend on stored surface water so greatly, these are hugely important for development work.
This chart is a sort of weekly amplitude of the net water movement into and from the 81 reservoirs. The data is from the Central Water Commission, Government of India. Movement below the x axis indicates water being stored, above the axis shows water being released for use, whether for irrigation, hydropower, urban use or industrial. Below is an example of the relative storage capacities of some of these reservoirs (you can see the Java version at Many Eyes).
The water in the Yangtze river, China’s longest, has dropped to its lowest ever recorded level. According to the latest census figures for the People’s Republic, the urban population now represents 49.68% of the country’s total population. Of the more than 600 cities, 400 are haunted by a lack of water and the problem is acute for 200 of them. If seasonal lack of water in the middle and lower reaches of the Yangtze further expands as it has in the past decade and becomes permanent, said the China Daily, “it will be impossible for North China, long plagued by drought, to rely on its southern counterparts to quench its thirst”. More than 1,000 reservoirs in Central China’s Hubei province dropped to such a low level that 500,000 people face a shortage of drinking water.
The newspaper said: “The government can never attach too much strategic importance to the water problem in the middle and lower reaches of the Yangtze River, given its position as one of the most important grain production bases, one of the most densely populated regions and the country’s most developed area. Records show that the seasonal water level in this part of the Yangtze has constantly reached the historical lows of at least 20 years every year in the last decade.”
On May 18, the State Council, China’s cabinet, announced for the first time that “problems that demand prompt solutions exist” in the project’s resettlement of residents, ecological protection, and prevention and control of geological disasters. The project’s follow-up plan says that by 2020, those resettled as a result of the dam should expect to live the average life of residents in Hubei province and Chongqing municipality, which the reservoir spans. About 1.3 million people have been resettled since 1993, fewer than 20% of them outside the reservoir area. The rest had to move to higher ground. The plots there are smaller and, because the slopes are unstable, most are ill suited to farming. With limited access to arable land, compensation, preferential policies, education and transportation, many are still struggling in sheer poverty.
Now, China’s President Hu Jintao has urged local government officials to treat drought relief in rural areas as an “urgent task” as he wraps up a four-day inspection tour in central China’s Hubei Province Friday. According to Xinhua, Hu’s call comes in the midst of the worst drought in 60 years that hit the middle and lower reaches of the Yangtze River.
These areas are China’s important agricultural production bases. Hu asked government officials to provide fiscal and technological support to farmers and work to ensure they have enough drinking water. Efforts should be made to give full play to the role of reservoirs in offsetting the impact of the drought, Hu stressed when visiting the Danjiangkou Reservoir, which is part of China’s massive south-to-north water diversion project.
On Friday 03 June 2011, Vice Minister of Environmental Protection Li Ganjie told the press that the drought has caused the deterioration of water quality in several major lakes. The long-lasting drought has led to the sharp reduction of water levels in major lakes such as Poyang Lake, Dongting Lake and Honghu Lake. Monitoring statistics showed that water quality in these lakes saw a noticeable decline in March and April, compared to the same period last year, according to Li.
Wetlands and migrant birds in these regions have also suffered from the drought, the worst to hit the region in decades, said Li. Over 1,333 hectares of wetlands located east of Dongting Lake have dried up. The drought has left the Yangtze River, China’s longest river, with its lowest levels of rainfall since 1961.
Li denied that the drought was aggravated by the river’s Three Gorges Dam. He stressed that a shortage of rainfall tcaused the drought. The long-lasting drought has affected parts of Hubei, Hunan, Jiangxi, Anhui, Jiangsu and Zhejiang provinces, which are located near the middle and lower reaches of the Yangtze River. These areas have seen 40 to 60 percent less rainfall than usual.