(4.5) APPILICATION OF GIS AND COLLATERAL DATA |
The Geographic Information System (GIS) is used for spatial and temporal assessment, which helps in identifying and monitoring the impacts, due to point and non-point source(NPS) of pollution. The patial and temporal changes in the surface water bodies are mapped using Survey of India 1:50,000 scale, topographical maps. The technology of remote sensing is used as a monitoring tool for basin management. The SOI 1:50,000 scale, toposheet number 57 G/12 are used for topographical informations, for placing ground truth sites in the field and for the preparation of base maps. Converting topographical information with field data in to digital format creates final maps and various layers of maps are prepared in this regard using Map info software. Integration of thematic layers of water quality and quantity along with socio-economic, land use and population informations are overlaid on the base map to know the Current Status and Socio-economic aspects of the wetlands.