Geographic Information System (GIS) Mapping 2
Geographic Information System (GIS) Mapping 2 : The use of a geographic information system, a computer-based tool, for risk or hazard mapping. GIS technology integrates database operations with the geographic analysis benefits offered by maps. The benefits of the technique are the increase in productivity of hazard-mapping technicians, it can give higher quality results than can be obtained manually and it can facilitate decisionmaking and improve coordination among agencies when efficiency is at a premium. The limitations of the technique include the lack of trained personnel; difficulties in exchanging data between different systems; difficulties in including social, economic and environmental variables; variability in access to computers and the quality and detail of the data required by GIS analysis. (UN HABITAT)
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