downtoearth-subscribe

Water Resources

  • Water use and misuse

    M. Rajivlochan Towards Water Wisdom: Limits, Justice, Harmony by Ramaswamy R. Iyer. Sage. Pages 270. Rs 350. Towards Water Wisdom: Limits, Justice, HarmonyOUR pot of water woes is brimming over. That does not seem surprising, according to Ramaswamy R. Iyer, since even though India is one of the few countries in the world which is blessed with an adequate quantity of water, there is a tremendous amount of mismanagement of water resources. While the country has over 4,000 billion cubic meters (bcm) of annual rainfall and almost 2000 bcm of river flow, the reality remains that we have had constant lamentations about the shortage of water and the destruction of fertile soil because of the overuse of water. According to experts, we have already poisoned most of our major rivers to the extent that their waters are not fit for drinking any more and very soon would be unfit for irrigation as well. Under such circumstances, Iyer suggests, it is important to remove ourselves from the hurly-burly of water conflicts, mull over our relationship with water a little more than it has been possible till now and then, serendipitously think of a constructive way out. That calls for wisdom which has been lacking till now in our management of water resources. In this thought-provoking book, Iyer quickly takes us through the various conflicts that have marked the use and misuse of water since Independence. He looks at the various demand-driven policies made by the government for the management of water. However, fulfilling the demand does not necessarily result in an efficient use of water. For a long time, the main focus of the government was to increase the amount of water for irrigation to increase food grain production. Today, over 80 per cent of the total water used in India is for agriculture. However, of the water available for irrigation, more than 60 per cent is wasted. India is one of the few countries in the world where the cities provide as much as 200 litres per capita per day of water. It goes without saying that most of it is wasted, used for cleaning toilets, washing cars and maintaining gardens. No wonder our fields and cities constantly starve for water and our states busy fighting over it. Karnataka battles Tamil Nadu, Maharashtra fights with Karnataka, Punjab has its sword drawn against Haryana and Madhya Pradesh is getting ready to battle both Utter Pradesh and Gujarat. The fights have become so intense that today even the Supreme Court is wary of pronouncing firmly on the judicious distribution of water resources lest it be drawn into an irresolvable conflict. While the state governments battle each other for water, they find it increasingly difficult to manage the supply to their own citizens. Hence they are trying to palm off the management of water resources to private parties in the hope that private ownership of water would ensure market rates being charged for the water use and correspondingly less wastage. Whether this would generate even more inequalities is a matter that the states are not willing to consider at the moment. All this suggests that we are completely lacking in water wisdom, insists Iyer. Hitherto we have left the matter of planning for water in the hands of experts. Engineers, planners and economists may be very well in providing suggestions on how best to go about using our water resources, but for every expert there seems to be an equal and opposite expert who under political pressure is willing to provide contrary advice equally strongly backed by scientific evidence. Hence, Iyer suggests, the need of the hour is to get out of the conundrums created by experts and apply some Gandhian thinking. First and foremost this means restraining our greed for more water and bringing about a change in the way that we think about water as a resource. The state needs to play the role of a trustee over this resource and the people have to be involved in preserving it and encouraged to live in harmony with nature and each other.

  • Transforming rural livelihoods in India

    <p>This report presents an overview of the impact of rural livelihood programmes supported by DFID in the context of the Millennium Development Goals, and explores some of the lessons learned under headings of income generation and rural growth, better management of natural resources, targeting the poorest and marginalised, and local institutions and self-governance.

  • Success stories of rain water harvesting and artificial recharge of ground water in NCT, Delhi

    The high rate of population growth and high level of urbanization in NCT, Delhi has resulted in over-development of ground water resources. Thus in about 75% area of NCT, Delhi ground water levels are declining at an alarming rate of 0.20 m per annum.

  • Geochemistry of Renuka Lake and wetland sediments, Lesser Himalaya (India): implications for source-area weathering, provenance

    The geochemical investigation of sediments deposited in the Renuka Lake basin and its adjoining wetland has shown variation in the distribution and concentration of major, trace and REEs.

  • Groundwater prospects evaluation based on hydrogeomorphological mapping using high resolution satellite images

    Water is the most important natural resource which forms the core of the ecological system. The advent of remote sensing has opened up new vistas in groundwater prospect evaluation, exploration and management. The groundwater resources of the study area, Rishikesh region of Garhwal Himalayas, are under threat due to population pressure caused by expanding tourism in this region.

  • Marginal-quality water resources and salt-affected soils

    There are two broad categories of marginal-quality water: wastewater generated by the domestic, commercial, and industrial sectors; and saline water from agricultural drainage systems, surface runoff, or pumped from overexploited aquifers. Millions of small-scale farmers around the world irrigate with marginal-quality water, often because they have no alternative.

  • Economics in sustainable water management

    For better management and improved access, there are several tools and instruments available to the water manager. This training manual focuses on economic and financial instruments. Economic instruments provide incentives for more efficient water use, either in terms of reduction of water quantity or increasing

  • Water fears lead Saudis to end grain output

    Saudi Arabia plans to halt wheat production by 2016 because of concerns about the desert kingdom's scarce water resources, according to a US government agency. The Saudi Arabian government has not publicly given details of the move, which comes as global cereal prices surge, driven by strong demand and lagging supply. Top-quality wheat prices for baking bread hit a high this week of $25 a bushel and have more than doubled since January.

  • Human-induced changes in the hydrology of the western United States

    Observations have shown that the hydrological cycle of the western United States changed significantly over the last half of the 20th century. We present a regional, multivariable climate change detection and attribution study, using a high-resolution hydrologic model forced by global climate models, focusing on the changes that have already affected this primarily arid region with a large and growing population.

  • Stationarity is dead: Whither water management?

    Systems for management of water throughout the developed world have been designed and operated under the assumption of stationarity. Stationarity-the idea that natural systems fluctuate within an unchanging envelope of variability-is a foundational concept that permeates training and practice in water-resource engineering.

  1. 1
  2. ...
  3. 1077
  4. 1078
  5. 1079
  6. 1080
  7. 1081
  8. ...
  9. 1237