India
Status report of saltwater intrusion and groundwater management studies in coastal and deltaic regions – A research report by the National Institute of Hydrology
Posted on 21 Jun, 2010 04:50 PMThe report presents a literature review on the status of research related to saltwater intrusion and groundwater management in coastal and deltaic environments in the east coast of South India. The area is typically characterized by highly productive and alluvial aquifers and high use of both surface as well as groundwater. Seawater intrusion into the freshwater aquifers is extensive due to increased pumpages.
A quantitative understanding of the patterns of movement and mixing between freshwater and saline water and the factors that influence these processes is stressed in the report. It presents the mechanics of saltwater intrusion through studies by Ghyben and Herzberg and later on by Hubbert. A comprehensive review of studies by Reilly and Goodman relating to saltwater intrusion is discussed. Later advances in understanding saltwater-freshwater relationship through numerical models like sharp interface model and miscible flow model are described.
Development of regional flood formulae using L-moments for middle Ganga plains – A research report by National Institute of Hydrology
Posted on 21 Jun, 2010 04:45 PMThe study develops regional flood frequency relationship and flood formulae based on recently developed efficient techniques of flood frequency analysis to estimate floods of desired return periods for small to moderate size gauged and ungauged catchments of the middle Ganga plains (sub-zone 1F) encompassing parts of Uttar Pradesh, Bihar and West Bengal. A regional flood formula has been developed by coupling the L-moment based regional flood frequency relationship with the regional relationship between mean annual peak flood and the catchment area.
Statistical analysis of water quality data of river Yamuna: A research report by National Institute of Hydrology
Posted on 21 Jun, 2010 01:58 AMThe study models the variations in water quality parameters of Yamuna river by means of stochastic approach using Central Water Commission’s monthly data for the period 1990-95 and makes projections for the year 1996. The results obtained for different water quality variables have been compared with the observed values and were found to be satisfactory.
Effective groundwater management in urban areas
Posted on 20 Jun, 2010 06:32 PMOften groundwater pumping is undertaken assuming the resource to be infinite. This myth has been shattered in the last few decades with increasing scarcity and deterioration in terms of quality as a consequence of over-exploitation and mismanagement of this resource to meet competing demands for drinking water and other needs in urban cities. However, managing groundwater is not an easy task.
Tairne wala samaj doob raha hai: An essay by Anupam Mishra on the Bihar Floods
Posted on 18 Jun, 2010 09:55 PMSmall and big dams and big embankments were constructed in this region, without understanding the nature of the rivers which have always changed course or overshot their banks. Assuming however, that the river will not change course, the Government adopted a skewed development program - that of building embankments to contain the river.
Need to bring focus of water & agriculture policies onto rainfed farming : SANDRP May '10
Posted on 18 Jun, 2010 11:03 AMThe Dams, Rivers and People issue for Apr-May 2010 is out. The state government policies, programmes and practices in water resources and highlights the need to bring focus of water & agriculture policies onto rainfed Farming. It is likely to yeild better economic, hydrologic, sustainable, equitable and climate friendly results and foodgrains production as per our future demands.
Ek Phirangi Raja - Chutki Bhar Namak Paseri Bhar Anyay: The story of Frederick Wilson and the Great Indian Hedge
Posted on 18 Jun, 2010 12:33 AMEk Phirangi Raja
In this essay, Romesh Bedi recounts the true story of Frederick E Wilson, a British army officer, who deserted the army after the Sepoy Mutiny of 1957, escaped to the Himalayas, and settled in Harsil, a remote village in Uttarakhand on the banks of the Bhagirathi.
Wilson makes a flourishing business from the export of skins, fur, musk from the region, and rips the local deodar forest, to cash in the growing demand for wooden sleepers during the expansion of the Indian railways by the British, which were sent down to the plains through the rivers. Wilson soon acquires a lease from the Raja of Tehri-Garhwal, for his timber business and keeps the Raja happy by giving him a share of the profits, and even begins to mint his own local currency, because of which locals start calling him Raja.
Neel Ka Dhabba - Sansthayen Narayan Parayan Bane: Essays in Hindi by Mahatma Gandhi and Vinobha Bhave
Posted on 17 Jun, 2010 01:05 AMNeel Ka Dhabba recounts how Gandhiji washed away the stain of cruel oppression of Champaran's Indigo farmers forcibly made to grow Indigo by processors-traders, using caution, non-violence, courage and humility. The essay is narrated by Gandhiji himself.
In Sansthayen Narayan Parayan Bane, Acharya Vinoba takes a critical look at the work of voluntary development organisations, and details what and how their goals, functioning and funds management should be.
Climate policy watch
Posted on 16 Jun, 2010 11:57 PMClimate change has been denied, labelled as a myth and a political manoeuvre or synergised with individual weather events.
Historical maps of Indian towns and cities (1893, 1909, 1924)
Posted on 15 Jun, 2010 11:11 PMThis set of maps of Indian towns and cities, dated between 1893 and 1924, give an idea of historical water bodies in each town/city, and can be compared with present day maps, to discover water bodies, that may have been lost to urban encroachments or other human interventions.