http://117.252.14.250:8080/jspui/handle/123456789/4816 2026-02-16T06:35:42Z 2026-02-16T06:35:42Z Krishan, Gopal Das Gupta, Purnaba Mackenzie, Andrew Kumar, C.P. Pal, Saikat http://117.252.14.250:8080/jspui/handle/123456789/7971 2026-01-07T13:11:11Z 2019-01-01T00:00:00Z

Title: Improving our understanding of the aquifer systems in Sunderbans: Report of Pump Priming Project Authors: Krishan, Gopal; Das Gupta, Purnaba; Mackenzie, Andrew; Kumar, C.P.; Pal, Saikat Abstract: The Indian Sundarbans, a UNESCO World Heritage site is home to 2.79 million people distributed over approximately 1100 villages, with 62 situated on the fringes of the forest. Majority of the population live in acute poverty with marginal living conditions. Majority of the population depends on agriculture for its livelihood which offers limited livelihood potential for communities due to higher sodic salinity levels which is accentuated by sea level rise and sea water intrusion and contamination of unconfined aquifers and agricultural lands. In recent times with increased crop demand, ground water demand has also risen as the limited rainfall fails to meet year round fresh water demand in the region. As a result, ground water abstraction has become a regular practice, over abstraction often leads to severe water crisis during summer in the region. In this context this pump priming project was conceptualized jointly with National Institute of Hydrology (NIH), British Geological Survey (BGS) and Rajarhat PRASARI to understand the aquifer system in the Sundarbans, by identifying the practicality of artificial aquifer recharge, and its potential contribution to aquifer sustainability and possible role in regional water security. The key aims of the pilot project were – i) To generate a conceptualized model of artificial recharge with the community, ii)Understanding communities fresh water demand/need for agriculture and iii)Current problems with ground water abstraction from the fresh water aquifers.

2019-01-01T00:00:00Z Mani, Pankaj Chakravorty, Biswajit http://117.252.14.250:8080/jspui/handle/123456789/7963 2026-01-07T06:43:03Z 2005-01-01T00:00:00Z

Title: Report on DAM BREAK Flood Simulation and Reservoir Sedimentation in Maithon Reservoir : Part I – Reservoir Sedimentation Authors: Mani, Pankaj; Chakravorty, Biswajit Abstract: The capacity of reservoir gradually reduces due to silting and hence sedimentation of reservoir is of great concern to all the water resources development projects. Storage loss not only occurs in the dead storage but also encroaches into live storage capacity, which has long and short term impact on the functioning of the project and economics. Correct assessment of the present capacity of reservoir is essential for assessing useful life of the reservoir as well as optimum reservoir operation schedule. The conventional silt and sedimentation surveys are laborious, time consuming and also costly. Remote sensing data plays a significant role in providing information about water-spread areas on different dates. Remote sensing data by virtue of its synoptic viewing of vast terrain features at regular intervals is of immense help and use in capacity surveys. It provides timely, reliable and comprehensive data on various natural resources. Its ability to map inaccessible areas helps in getting information about the reservoir. Reservoir sedimentation surveys are essentially based on mapping of water spread areas at the time of satellite over pass. It uses the fact that water-spread area of the reservoir reduces with the sedimentation at different levels. The water-spread area and the elevation information are used to calculate the volume of water stored between different levels. These capacity values are then compared with the previously calculated capacity values to find out the change in capacity between different levels. In this study, sedimentation in Maithon reservoir has been estimated using IRS 1C satellite data for 6 dates from December 2002 to May 2003. All digital image processing work has been done using ERDAS Imagine software. The total capacity loss has been estimated since last conventional survey of reservoir during 1993-94. Annual rate of siltation has also been computed. The sedimentation below minimum draw down level has been estimated using historical data of hydrographic survey of the reservoir since 1955. The uncertainty and various source of error associated with remote sensing technique have been evaluated.

2005-01-01T00:00:00Z Nema, M. K. Jain, Sharad K. http://117.252.14.250:8080/jspui/handle/123456789/6260 2023-04-18T14:34:32Z 2016-01-01T00:00:00Z

Title: Variability of the Hydro-Climatic variables in Punjab plains of lower Sutlej Authors: Nema, M. K.; Jain, Sharad K. Abstract: The variability and trends in hydro-meteorological variables has received a wide spread attention among meteorologists and hydrologists across the globe during past several years because of its relevance to climate change. Capturing typical properties of time series, like trends, is highly relevant for the discussion of potential impacts of global warming or flood / drought occurrences. Although, the assessment of trends in climatology and hydrology is a matter of debate due to changing variability and non- stationariness of the variables. These variability in conjunction with climatic change causing significant impacts to agriculture, ecology and infrastructure. The Indian Summer Monsoon (Southwest Monsoon) occurs from June to September and contributes approximately 80% to the total annual precipitation in India. The majority of the Indian agriculture is dependent on it, which is critical for the availability of freshwater for drinking and irrigation. Changes in climatic variable over the Indian region, particularly the SW monsoon, would have a significant impact on agricultural production, water resources management and overall economy of the country. The regions with the rainfed agrarian economy are likely to be worse effected by the changes. Punjab is one of the most critical and important agriculture rich state of India, it holds place of pride among the Indian States for its outstanding achievements in agricultural development. The state has witnessed tremendous increase in the agricultural production during the Green Revolution period, mainly due to healthy mix of institutional and technological factors. On the other hand the extensive use of groundwater through tube wells for irrigation have led to lowering of the groundwater table in most parts of state, and about 98% of the block are under critical to over-exploited (Dark) ground water zones. Agriculture is the largest industry in Punjab; it is the largest single producer of wheat in India. The Punjab state comprising only 1.54 percent of the total geographical area of country now contributes 13-14 percent towards the total food grain production of the country. State has earned a name of granary of India through contributing 35 to 40 percent of rice and 40 to 75 percent of wheat to the central pool in the past two decades. Agriculture and allied sectors are the major contributors (31%) to the state’s GDP. For a successful rainfed agrarian economy Monsoon play an important role and a pre-information regarding the changes in the hydro-climatic variable can be ascertained by the analyzing the trends of these hydro-meteorological variables. Keeping this view in mind the present study was undertook to analyze the variability and trend of hydro-climatic variables of Punjab plains of lower Sutlej.

2016-01-01T00:00:00Z Singh, Rajesh Singh, Yatveer Garg, P. K. Gupta, Rajeev Kumar, Sumant Satyaprakash Singh, Digamber Nema, R. K. Agarwal, P. K. Goel, Rakesh Thakural, L. N. Omprakash Agarwal, V. K. Sharma, Mukesh Nema, M. K. Sapra, T. R. Mishra, P. K. Singh, Hukum Srivastav, S. L. Khokhar, Rocky Ahmad, Tanvear Sharma, Yogendra Patra, J. P. Mittal, Sanjay http://117.252.14.250:8080/jspui/handle/123456789/6259 2023-04-17T20:40:01Z 2015-01-01T00:00:00Z

Title: Survey report river front sites & Ganga Nalas in Uttarakhand Authors: Singh, Rajesh; Singh, Yatveer; Garg, P. K.; Gupta, Rajeev; Kumar, Sumant; Satyaprakash; Singh, Digamber; Nema, R. K.; Agarwal, P. K.; Goel, Rakesh; Thakural, L. N.; Omprakash; Agarwal, V. K.; Sharma, Mukesh; Nema, M. K.; Sapra, T. R.; Mishra, P. K.; Singh, Hukum; Srivastav, S. L.; Khokhar, Rocky; Ahmad, Tanvear; Sharma, Yogendra; Patra, J. P.; Mittal, Sanjay Abstract: The Ministry of Water Resources, River Development and Ganga Rejuvenation, GOI is taking up investigation works towards the objective of clean Ganga. In this regard, the ministry has directed to National Institute of Hydrology, Roorkee for collection and compilation of detailed information regarding rivers and drains discharging in River Ganga within the state of Uttarakhand vide e-mail (Subject: NMCG 118 River Front Points identified) dated 03.12.2014. The purpose of this information is to identify and prepare plan for river front development plan. 15 river front towns have been identified in Uttarakhand. In this regard, Director NIH vide letter no. 15/18/2011-NIH/Dir dated Dec. 04, 2104 constituted 12 groups (Annexure 1) to visit the respective cities and collect the requisite information in the prescribed format.

2015-01-01T00:00:00Z