Abstract
The study area, Tumkur amanikere lake watershed, is located 0.5 km away from Tumkur Town on National Highway No.4. The main source of water for this lake is Kallur village tank catchment area. The average rainfall in the area is 965 mm. The submersion area of the lake at MWL is 204 hectares. Groundwater samples were collected from 22 stations covering the area during the year 2008 and were analyzed for physicochemical characters. The type of water that predominated in the study area is Ca-Mg-Cl type, was assessed based on hydrochemical facies. Besides, suitability of groundwater for irrigation was evaluated based on sodium adsorption ratio, percent sodium, and the US salinity diagrams.
Highlights
The physical and chemical parameters of groundwater play a significant role in classifying and assessing water quality
The chemical characteristics (Sawyer and McCarthy Hardness, and % Na) of groundwater in the study areas are listed in Tables 2 & 3
The type of water predominates in the study area is Ca-Mg-Cl type
Summary
The physical and chemical parameters of groundwater play a significant role in classifying and assessing water quality. The hydrochemical study reveals quality of water that is suitable for irrigation, agriculture, drinking and industrial purposes. It was observed that the criteria used in the classification of waters for a particular purpose may not find the suitability standards for other purposes and better results can be obtained only by considering the combined chemistry of all the ions rather than individual or paired ionic characters[4,5,6]. Chemical classification throws light on the concentration of various predominant cations, anions and their interrelationships. Considering the individual or paired ionic concentration, certain indices to find out the alkali hazards were proposed[1,2,3]. A number of techniques and methods have been developed to interpret the chemical data. Zaporozec[7] summarized the various modes of data representation and discussed their possible uses
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