Spatial Analysis for Potential Water Catchment Areas using GIS: Weighted Overlay Technique

[摘要] The development of applied GIS is growing rapidly and has been widely applied in various fields. Preparation of a model to obtain information is one of the benefits of GIS. Obtaining information for water resources such as water catchment areas is one part of GIS modelling. Water catchment model can be utilized to see the distribution of potential and ability of a region in water absorbing. The use of overlay techniques with the weighting obtained from the literature from previous research is used to build the model. Model builder parameters are obtained through remote sensing interpretation techniques such as land use, landforms, and soil texture. Secondary data such as rock type maps are also used as water catchment model parameters. The location of this research is in the upstream part of the Opak river basin. The purpose of this research is to get information about potential distribution of water catchment area with overlay technique. The results of this study indicate the potential of water catchment areas with excellent category, good, medium, poor and very poor. These results may indicate that the Upper river basin is either good or in bad condition, so it can be used for better water resources management policy determination.

[发布机构] Undergraduate Stud. of Universitas Gadjah Mada, Bulaksumur, Yogyakarta; 55281, Indonesia^1

[效力级别] 计算机科学 [学科分类] 计算机科学（综合）

[关键词] Model builders;Overlay techniques;Potential distributions;Remote sensing interpretation;Secondary datum;Spatial analysis;Water catchment;Water resources management