Water Quality Mapping Using GIS in a Tank Irrigated Watershed, Tamilnadu, India

Abstract- -Agriculture activities have maintained greater impacts on Indian economy. To achieve greater and production in agriculture activities, assessment of water quality is very important. For planning agriculture development in a tank command area it is very important to develop the tank irrigation management information system. For this purpose, ground water as well as surface water samples from lower basin part of wellington Reservoir (Northern Block) and command area of Tittagudi district is collected with GPS. For monitoring water quality parameters, the samples taken are analyzed in the laboratory using standard procedures and the resultant values are compared with their respective standard values. From the analysis, it is found that in most of the locations of the study area, water quality found to be within the permissible limit except a few locations. Spatial mapping of water quality of the study area are prepared using GIS and spatial interpolation technique. Geographical Information system, a tool which is used for storing, analyzing and displaying spatial data is also used for investigating water quality information of the study area. An integral water quality information system in a tank irrigated watershed is developed. Resultant database on spatial variations of water quality obtained in this study will be helpful to the farmers for better planning and efficient management of agriculture activities as well as to the hydrologists for proper efficient watershed management.

DOI: /10.61463/ijset.vol.12.issue1.607