Identification of Surface Water Pollution Zones Using Remote Sensing and GIS: A model Study from Parts of Visakhapatnam District, A.P

摘要

The present studies involve to develop a base line data and existing environmental conditions to the GIS database to holistically access and manage environmental and non-environmental resources used by Industrial investors and other land and water users. The implementation of the Geographical Information System (GIS) will bring positive benefits through the generation of information and creation of digital databases with information on Water Quality, Health and Hygiene and streamlines the decision making process. IRS-P6, LISS-Ill geocoded Remote sensing Satellite data and toposheets from Survey of India (SOI) are acquired for primary analysis. The present study has been carried out in nine (9) mandals namely Nakkapalli, Elamanchilli, S. Rayavaram, Achchutapuram, Rambilli, Anakapalle, Munagapaka, Kasimkota, Paravada of Visakhapatnam District, covering an area of 1355 Sq.km. The study area is located between north latitudes 17° 19' and 17° 46' and east longitudes 82°35~1 and 83°10' and is covered in the survey of India topographical map numbers 65 K/10,11,13,14,15, 65 0/1 and 0/2. Using Visual Interpretation technique different thematic maps are prepared like base map, drainage map, watershed map, surface water flow map and these thematic maps were scanned and digitized using AutoCAD and converted into GIS. Topology is created by linking the spatial data file and attribute data file. GIS overlay analysis derived maps like surface water table, surface water use, surface water quality, was carried out to find out the above parameters pollution lodes in the study area. Finally integrating of all the above maps based on this maps Risk area map for surface water pollution activity maps has developed This kind of study is very useful for Pollution Prevention in industrial areas and also useful for the planners, decision makers for management and monitoring of industrial areas.