Soil data definition for hydrologic response unit analysis in SWAT model of Langkawi Island, Malaysia

Soil and water assessment tool (SWAT) have been assessed to examine environmental conditions watershed scale, particularly for quality natural resource management. In this study, SWAT model has applied the main river basins in Langkawi Island. data, one of spatially distributed data needed interface. Currently, no soil interpretation record (s5id) code available readable format user database The purpose definition is create a input setup hydrologic response unit (HRU) analysis which includes map, type, texture, s5id code. Study by Leman et al. (2007) showed that geological formation consists alluvium, granite, Machincang, Setul, Chuping Singa formation. dominant group was Acrisols (soil name: Orthic Acrisols, Ao) texture classification sandy clay loam. MY4284 MY4464 defined as number (s5id). Percentage coverage (62.21%; 10,865.87 ha [26,850.15 ac]) percentage (37.79%; 6,599.8 [16,308.46 within selected boundary This successfully tested fully functional usersoil analysis.