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News and Articles
Groundwater quality monitoring and evaluation in Sagar district – A research report by National Institute of Hydrology
Posted on 28 Jul, 2010 02:23 PMThe report presents a hydrochemical study of the groundwater of Sagar, Madhya Pradesh carried out during 1996 to examine the suitability of water for drinking and irrigation purposes. Under the study, thirty-five water samples representing the shallow groundwater of the region were collected during pre-monsoon and post-monsoon seasons in the month of June and November 1996 respectively.
Groundwater quality evaluation in Doon valley of Dehradun– A research report by National Institute of Hydrology
Posted on 28 Jul, 2010 02:16 PMIn this report, the suitability of groundwater of the Doon valley, Dehradun has been demonstrated on the basis of standards prescribed by BIS and WHO. The groundwater quality of the valley has been studied during 1996 to examine the suitability of water for irrigation and drinking purposes. Twelve water samples representing the shallow groundwater of the valley were collected during the pre-monsoon and post-monsoon seasons and analyzed for various constituents, viz. pH, conductance, total dissolved solids, alkalinity, hardness, chloride, sulphate, phosphate, sodium, potassium, calcium and magnesium.
Identification of sampling sites for water quality monitoring in Narmada basin – A research report by National Institute of Hydrology
Posted on 27 Jul, 2010 11:52 PMThe report attempts to identify sampling sites for water quality monitoring in Narmada basin. The assessment of water quality conditions over a wide area with respect to time and space requires the monitoring of activities to be carried out in a network. The location of a permanent sampling station is probably the most critical factor in a monitoring network which collects water quality data. If the samples collected are not representative of the water mass, the frequency of sampling as well as the mode of data interpretation and presentation becomes inconsequential.
Waterlogged area mapping and hydrological data analysis of Mokama tal area – A research report by National Institute of Hydrology
Posted on 27 Jul, 2010 11:42 PMThe report presents waterlogged area mapping and hydrological data analysis of Mokama tal area of Bihar. The drainage problems of the agriculture land use are basically associated with the stagnation of runoff and the rise of the water table. Generally, the runoff stagnation is a result of intense rain, which produces excessive runoff for which the existing drainage capacity is not adequate or outlet conditions are not favorable. The rise of water table beyond a critical limit or surface ponding results in waterlogging conditions.
Determination of SCS runoff Curve Number and land use changes for Hamidnagar sub-basin of Punpun basin – A research report by National Institute of Hydrology
Posted on 27 Jul, 2010 11:33 PMThe report deals with determination of SCS runoff Curve Number and land use changes for Hamidnagar sub-basin of Punpun basin. The design of any hydraulic structure calls for the estimation of runoff. The Soil Conservation Services model, developed by USDA, computes direct runoff through an empirical equation that requires the rainfall and watershed coefficient as inputs. The watershed coefficient is called the Curve Number (CN), which represents the runoff potential of the land cover-soil complex.
Arsenic pollution in groundwater – A research report by National Institute of Hydrology
Posted on 27 Jul, 2010 11:24 PMThe report reviews compilation of information about arsenic pollution in groundwater experienced by many countries in the world and in particular the eight districts of West Bengal. The science of arsenic pollution and the state of art of arsenic removal have been discussed and some immediate remedial measures suggested.
Estimation of surface soil properties in Malaprabha command area – A research report by National Institute of Hydrology
Posted on 27 Jul, 2010 08:42 PMThe study deals with estimation of surface soil properties in Malaprabha command area. It can be broadly concluded that generalization of soil properties for an area is difficult since the soil and land use type varies drastically from one point to another in a short distance. It is only possible to have an average value for a particular type of soil. Also, it can be seen from the results that the percentage of silt-clay plays an important role in shaping the hydraulic properties of a soil.
Tank study in Belgaum district of Karnataka– A research report by National Institute of Hydrology
Posted on 27 Jul, 2010 08:30 PMThe report presents a study of the Rakaskop tank, which caters to the drinking and domestic water purposes of the Belgaum city of Karnataka. In recent past, it has been observed that the amount of water stored during the monsoon season is not sufficient for domestic purposes in the city throughout the year. The study estimates the dependable yield of the tank and also the evaporation from the tank.
Soil physio-chemical properties of Basantar catchment in Jammu and Kashmir – A research report by National Institute of Hydrology
Posted on 27 Jul, 2010 08:17 PMThe report presents the study on the physio-chemical properties of soil for Basantar catchment in Jammu and Kashmir. Soil physio-chemical properties are basic inputs for any hydrological modeling and are important for efficient management of irrigated agriculture. The most important soil properties influencing irrigation are its infiltration characteristics and water holding capacity. Other soil properties such as soil texture, soil structure, capillary conductivity, soil profile conditions, and depth of water table are also given consideration in the management of irrigation water.
Modeling of Cochin estuary using two dimensional finite element model – A research report by National Institute of Hydrology
Posted on 27 Jul, 2010 08:07 PMThe report deals with the modeling of the Cochin estuary along Kerala coast using two- dimensional finite element model. The basic equations for modeling of any surface water problems are the three dimensional hydrodynamic equations arising from consideration of mass and momentum conservation. In vertically well mixed shallow water bodies, the horizontal components of flow quantities are normally much more significant than vertical components.