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Geographic Information System for Flood Hazard AreaDelineation and Estimation of At-Risk Households at theCommunity Level: A Case Study of Salaya Sub-District,Nakhon Pathom Province |
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| รหัสดีโอไอ | |
| Creator | Teeranong Sakulsri, Supavan Phlainoi, Sura Pattanakiatand Sureeporn Punpuing |
| Title | Geographic Information System for Flood Hazard AreaDelineation and Estimation of At-Risk Households at theCommunity Level: A Case Study of Salaya Sub-District,Nakhon Pathom Province |
| Publisher | The Thai Association of the Population and Social Researchers |
| Publication Year | 2558 |
| Journal Title | Journal of Population and Social Studies |
| Journal Vol. | 23 |
| Journal No. | 2 |
| Page no. | 168-179 |
| Keyword | GIS, PSA, flood hazard area, Thailand |
| ISSN | 0857-717X |
| Abstract | Every year, Thailand faces flooding, the greatest natural disaster threat for the country. It is at thehousehold level where risk outcomes first materialize. This study delineates flood-hazard areas inSalaya sub-district and provides estimates of at-risk households located in this area by usinggeographic information system (GIS) technology with Potential Surface Analysis (PSA) and OverlayAnalysis. The analysis classifies areas into different levels of hazard, hazard zones and at-riskhouseholds. The results show that 41.6% of the sub-district is an area of "moderate" flood hazard,comprising 10.45 square kilometers. "High" flood-hazard areas account for 8.98 square kilometers(35.9%), "low" hazard areas represent 4.28 square kilometers (17%) and "very low" hazard areasaccount for 1.38 square kilometers (5.5%). As or the number of households in the hazard area, it wasestimated that the highest percentage1,160 households or 50%are located in moderate flood-riskareas, followed by low flood-risk areas (560 households or 24%), high flood-risk areas (521 householdsor 23%), and very low flood-risk areas (70 households or 3%). All results are shown on a map of thestudy area with a 1:50,000 scale. |
