An Application of Remote Sensing Data to Assess Water Shortage Areas in Chanthaburi Province
Abstract
Drought is a natural disaster having complex causes and a spatial problem in Chanthaburi province for a long time. This study aimed to assess water shortage areas by using remote sensing data from Landsat 4-5 (TM), Landsat 7 (ETM+) and Landsat 8 (OLI/TIRS) satellites from 2002 to 2018. We found that in dry season during 2002 to 2018 most of Chanthaburi province (more than 40% of the area) was in slight drought conditions. During the years 2002, 2003, 2006 and 2015, severe drought conditions covered the west side of the province and in 2015, severe drought conditions covered almost the whole province (86% of the study area). In the average wet season, Chanthaburi province has slight to moderate drought conditions (approximately 30-40%), but in 2002, 2004, 2005, and 2006, moderate to severe drought was found in the northern and middle parts of the province, covering more than 40-60% of the total area which is mostly agriculture and forestry area. During the cool dry season, it was found to be in normal conditions and slight drought with more than 80% of total area, but in 2002, 2005 and 2011 vegetation conditions were moderate to severe especially in the eastern part of the study area. The data obtained from this study are consistent with the report on drought-prone situations in Chanthaburi Province in the past ten years. Therefore, the information can be used to integrate with relevant agencies to effectively solve the problem of water shortage in Chanthaburi Province.References
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