This research aims to find out the areas at risk of flooding and landslide chantaburi province and as a foundation for information to the relevant agency applied for planning seek guidance from the application of geographic information system to analyze data that is used to factor in, flood analysis, including rainfall slope distance from water path. The drainage of the soil. Land utilization and factors used in the analysis of the landslide: rainfall slope type rock. The use of land, water, forest condition, the distance from the source, without giving up points, and the weighted value and processed in geographic information system. Study results showed that the risk of flooding is very high in the area, an area with a 5.83 percent of the chanthaburi area of both provinces are in areas of high flood risk chalung district in the provinces chanthaburi province of 12.44 percent in the district Kaeng hang maeo. Moderate risk flood areas in the provinces of chanthaburi is 6.46 per cent of low-risk flood areas in provinces provinces chanthaburi province 0.00% of all areas in the district Kaeng hang maeo. Expressed in the form of a map. Which can be used as a database, with the planning and implementation of prevention guidelines. Study results showed that the risk of landslide areas in the provinces of chanthaburi is the high percentage of high risk landslide area in provincial areas are chanthaburi province percentage of total area, the risk of landslide area in chanthaburi are the moderate per cent of low-risk area, the Prefecture landslide area in chanthaburi province percentage of total is expressed in the form of a map. Which can be used as a database, with the planning and implementation of prevention guidelines.
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