Quality of water in the Black River near Dunn, North Carolina, and ground-water levels adjacent to the river prior to channel excavation in 1978-79

1980 ◽  
Author(s):  
Clyde E. Simmons

2016 ◽  
Vol 5 (2) ◽  
pp. 47
Author(s):  
Siba Prasad Mishra

<p>Agriculture can not exist without water. At present the old practice of arbitrary use of water in irrigation sector has become unethical. Odisha is an agrarian state in east coast of India. For better yield of crops, quality of water is intricately related to the aquifer geometry, ground water flow regime and its quality. Coastal Odisha is having an area of 14700 sqkm and demography of 1.26 million. The land has mostly water logged alluvial crop land, deciduous forests or sandy dunes with an astomosed channels of hexa-deltaic rivers. The edaphic factors demand improvement of quality of ground water which is brackish. The physicochemical properties like pH value, electrical conductivity, inorganic constituents (Na<sup>+</sup>, Mg<sup>++</sup>, Ca<sup>++</sup>, K<sup>+</sup>) of ground water used for lift irrigation have been studied. Data from thousand number of wells from the study area are covered in various seasons during the years 2009-2014 along with the yield of the major crop, i.e., paddy. The indices and parameters like EC, SAR, KI, ESP, SSP, MAR, PI and alkalinity of the ground water are determined to show its fitness for irrigation in the area. The different water management policies and present activities are discussed so that the ground water can be used efficiently for irrigation in coastal Odisha.</p>



2017 ◽  
Vol 28 (3) ◽  
pp. 444-459 ◽  
Author(s):  
A. Krishnakumar ◽  
Revathy Das ◽  
Saranya Puthalath

Purpose The purpose of this paper is to assess the ground water quality and salinity issues in the fast developing coastal urban lands of two river basins of Thiruvananthapuram district, Kerala, South India. Design/methodology/approach In order to address the water quality of the basins, field sampling was conducted and the samples were analysed in the laboratory. A comparison with water quality standards was also made and the interpretations of the results were done using GIS and statistical tools. Findings The values of conductivity, chlorides and salinity show that the coastal areas of Neyyar and Karamana basins are severely affected by salinity intrusion in addition to the pollution problems. More than 90 per cent of the samples are with hardness lower than 100 mg/l. About 70 per cent of the study area is with calcium concentrations lower than 25 mg/l. The content of sulphate and magnesium in Poovar and Poonthura coastal stretches is found to be higher compared to other regions. Originality/value Since not much work has been published from the study area on these aspects, the hydrochemical characterization is a very important in deciphering the quality of ground water for its proper management. The water quality evaluation and salinity intrusion studies are very important for the future planning and development of this area.



Author(s):  
D. Kannan ◽  
Dr. N. Mani

The present study was to assess the quality of ground water from various parts of Thanjavur district, and check its fitness for drinking purpose. The pH was determined by pH metric method, calcium, magnesium, chloride were analyzed by titration method, sulphade, iron, nitrate, nitrite, chromium were estimated by spectrometric method ,total dissolved solids of the water samples were determined by gravimetrically, colour of the water samples were determined by platinum-cobalt method ,taste of the water samples were determined by taste rating method, turbidity of the water samples were determined by Nephelometric method etc., are determined for some parts of Thanjavur district water samples and compared with standard limits recommended by BIS. Comparative study of groundwater for this region can be used for the quality of water is suitable for drinking purpose, but the ground water sample numbers S2, S3, S4, S5, S6, S7 and S9 is not suitable for drinking purpose, because in the presence of excess of hardness (Ca2+, Mg2+), chloride, and TDS.



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