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Groundwater
Review of methods analyzing pump test data - A research report by National Institute of Hydrology
Posted on 29 Jun, 2010 10:34 PMThe methods of pump test analysis reviewed in this report has been classified as traditional, computer based and new graphical. Quantitative data on hydraulic characteristics of aquifers including transmissivity and storativity are essential to the understanding and solution of aquifer problems and the proper evaluation and utilization of groundwater resources.
Soil moisture movement and recharge to groundwater using Tritium tagging techniques in Hardwar - A research report by National Institute of Hydrology
Posted on 29 Jun, 2010 08:27 PMThe study looks at soil moisture movement and recharge to groundwater using nuclear methods like tritium tagging. It estimates the recharge to groundwater due to monsoon rain and irrigation through the unsaturated porous media in case of cultivated and uncultivated fields.
Hydrological investigations and instrumentation in a small watershed in Garhwal Himalayas - A research report by the National Institute of Hydrology
Posted on 29 Jun, 2010 07:47 PMThe report presents the preliminary results of a hydrological study in Danda watershed, a small hilly watershed located in Tehri-Garhwal, representative of the mountainous sub-humid agro-ecological region in the western Himalayas.
Groundwater quality monitoring and evaluation in and around Greater Guwahati - A research report by National Institute of Hydrology
Posted on 29 Jun, 2010 11:05 AMIn this study, groundwater quality monitoring and evaluation of Greater Guwahati is presented based on the physico-chemical characteristics of thirty samples collected on grid pattern. The various parameters analyzed include pH, electrical conductivity, temperature, Dissolved Oxygen (DO), Total Dissolved Solids (TDS), alkalinity, hardness, Na+, K+, CA++, Mg++, NO3-, SO4--, Cl- and F-. The results were compared with water quality standards prescribed by BIS and WHO.
Application of a modified SCS-CN model - A research report by National Institute of Hydrology
Posted on 29 Jun, 2010 10:20 AMIn this study, the modified version of the Soil Conservation Services-Curve Number (SCS-CN) by Mishra and Singh (1998a) was employed to the data of 14 watersheds falling in the arid (Rajasthan) and 2 watersheds in the sub-humid (Madhya Pradesh and Uttar Pradesh) regions of India and the results were compared with those of the existing SCS-CN method. The modified version is found to perform better than the existing SCS-CN method in all applications to the data of 16 watersheds.
Arsenic pollution in groundwater in West Bengal – A research report by National Institute of Hydrology
Posted on 28 Jun, 2010 09:08 PMThe report describes the results of the study of arsenic pollution in groundwater in Nadia as well as the hydro-chemical study of the river Hoogly in West Bengal. The alluvial tract along the river Hoogly covering a stretch of around 470 km encompassing eight districts is affected by arsenic pollution of ground water, the source being geogenic.
Study of recharge to groundwater due to monsoon rains using Tritium tagging in parts of Narsinghpur – A research report by National Institute of Hydrology
Posted on 28 Jun, 2010 04:48 PMThe study attempts to estimate the recharge to groundwater due to rainfall and irrigation using tritium tagging techniques in parts of Narsinghpur district under the Narmada catchment in Madhya Pradesh. The estimation of recharge to groundwater is crucial to better water resources management, particularly in arid and semi-arid regions.
Groundwater quality studies in Jammu and Kathua districts (Jammu and Kashmir) – A research report by the National Institute of Hydrology
Posted on 28 Jun, 2010 11:55 AMThe study presents detailed investigations of the chemical quality of groundwater in Jammu and Kathua districts (J & K), carried out to evaluate the suitability of water for various uses. The quality of groundwater of the area has been studied based on the physico-chemical analysis of thirty seven water samples collected from open wells between June and December, 1996.
Various parameters like pH, conductance, alkalinity, hardness, chloride, sulphate, sodium, potassium, calcium and magnesium have been determined for all the samples and compared with the standards to evaluate its suitability for drinking and irrigation purposes.
Irrigation water quality has been computed on the basis of Doneen’s Permeability Index and residual Sodium Carbonate. The higher values of some parameters at certain locations indicate the contamination in groundwater and make the water unsuitable for specific applications.
Analysis of flow to a multi-aquifer well - A research report by National Institute of Hydrology
Posted on 27 Jun, 2010 08:51 PMIn this study, unsteady flow towards a fully penetrating well screened in both the aquifers of a two-aquifer system separated by an aquitard has been analyzed using numerical approach. Existence of multi-aquifer systems is common in a sedimentary basin.
Parameter characterization for solute transport in groundwater - A research report by National Institute of Hydrology
Posted on 27 Jun, 2010 08:16 AMThe study attempts to develop a mathematical model for transport of a solute in groundwater by taking the mass balance of the dissolved pollutant over a static elementary volume in three cartesian coordinates.
The management of groundwater resources is becoming a complicated task due to the overwhelming pressure on groundwater and the changing scenario of groundwater quality (physical, chemical and biological).
The hydraulics of groundwater is governed by many bounded and un-bounded factors. The mixing of constituents in groundwater is an important factor that shapes the occurrence of constituents in any precise location at any given time.