http://nopr.niscair.res.in/handle/123456789/14675 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/14731 Title: Ganga cleaning work : Till today <br/> <br/>Authors: Prasad, Shukdeo <br/> <br/>Abstract: In the present paper, a review of Ganga cleaning work planning started in 1985 or Constitution of Central Ganga Authority including results of work plans has been made. Further, the decisions made by Environment & Forest Ministry, Government of India regarding the shortcomings of the plan has also been discussed. Brief details of the forthcoming goals decided by Govt. of India has also been presented, which is expected to be successful. <br/> <br/>Page(s): 159-162 http://nopr.niscair.res.in/handle/123456789/14730 Title: Hydro-geological studies around Jhamarkotra mines, Udaipur, Rajasthan <br/> <br/>Authors: Mishra, Kumkum; Garg, Pankaj; Kumar, Sudhir; Kumar, Bhishm <br/> <br/>Abstract: Mineral resources are potentially valuable substances for which reasonable prospects exist for eventual economic extraction. Southern part of Rajasthan state is very rich from mining point of view, as a number of valuable minerals like marble, copper, rock phosphate, sandstone, lead and zinc etc. are present in the area. Jhamarkotra rock phosphate mine, located about 26 Km from Udaipur city in the Udaipur District of Rajasthan, is the largest open cast mine in India and practically the only commercially exploitable deposit of rock phosphate in India. The mine, covering a total area of about 18.44 km2 and is divided into 11 blocks. It is located between latitudes 24^o27' - 24^o29' N and longitudes 73^o49' - 73^o52' E. The top surface level in the mine area was about 780 m above mean sea level (MSL). The availability of rock phosphate is between 380 to 600 meters. The average annual rainfall of the area is about 577 mm. The major problem that mining activity is facing from time to time is the ingress of groundwater in the mining pit mainly in the 'D' and 'E' block. This problem is due to presence of groundwater in phosphate bearing dolomitic limestone rock. A detailed investigation has been carried out to find out the source and possible flow path of groundwater in the mine using multidisciplinary approach including hydro-geological investigations, remote sensing techniques, isotopic studies, and resistivity survey. Samples of pumped water from the mines, precipitation, surface water bodies and groundwater were analyzed for isotopic characteristics which indicate that the water in mine pit is basically groundwater and has no connection with any surface water body. To control ingress of groundwater and to lower the water level in mining area, sites for new tubewells are suggested. <br/> <br/>Page(s): 155-158 http://nopr.niscair.res.in/handle/123456789/14729 Title: Variation of stable isotopes in groundwater of Tezpur (Assam) <br/> <br/>Authors: Kumar, Sashiranjan; Kumar, Bhishm; Ray, Shiv Prakash; Gupta, Vishal; Ahamad, Jameel <br/> <br/>Abstract: Isotope techniques are effective tools for satisfying critical hydrologic information needs like the origin of groundwater, recharge, residence time, impact of climate change on water resources, interconnections between water bodies, among others. Isotopes provide information that sometimes could not be obtained by other techniques. Stable and radioactive environmental isotopes have now been used for more than four decades to study various aspects of hydrological systems. Stable isotopes are very useful tools which are used extensively in scientific research. Within the field of nutritional studies stable isotopes are used for studying the flow of nutrients through the human body. Since they are safe and non-radioactive they can even be used in infants and pregnant women. In the present study a comprehensive set of measurements of hydrogen and oxygen isotopic composition (2H‰ and 18O‰) taken from a variety of locations for the first time to determine the Local Ground Water Line (LGWL) for groundwater of Agartala. This equation will be useful as a reference point for future studies in this area that use stable isotopes of hydrogen and oxygen to analyze many hydrologic problems. <br/> <br/>Page(s): 149-154 http://nopr.niscair.res.in/handle/123456789/14728 Title: Groundwater status of arid tehsils of Sirohi district of Rajasthan state <br/> <br/>Authors: Goyal, Rajesh Kumar; Sharma, Mukesh <br/> <br/>Abstract: <span style="font-size:9.0pt;font-family:" times="" new="" roman";="" mso-fareast-font-family:"times="" roman";mso-ansi-language:en-in;mso-fareast-language:="" en-in;mso-bidi-language:ar-sa"="">Western part of Rajasthan state known as Thar Desert is very poor in terms of natural resources. Low and erratic rainfall, high wind velocity and intense solar regimes are some major climatic constraints of this region. Groundwater is generally deep and saline in most parts and is not suitable for drinking and irrigation purposes. Soils in the region are mostly sandy with low water holding capacity. Shifting of sand dunes due to high wind velocity is very common. Due to absence of other water resources like canal and rivers, agricultural and other allied activities are totally dependent on rain. Due to adverse climate conditions, drought occurs frequently in this region. Therefore, sustainability in production system can only be achieved through proper management and conversation of available natural resources like soil and water. For sound planning of soil and water resources, its assessment and quantification is the first step. Central Arid Zone Research Institute – Jodhpur has conducted a detailed survey of Sirohi district (Rajasthan) to assess the quantity and quality of groundwater. The paper present the details of the information collected during the survey.</span> <br/> <br/>Page(s): 146-148