Identification of recharge area in Bengawan Solo Indonesia catchment areas based on Geographic Information System

Tarumanagara International Conference on the Applications of Technology and Engineering

工业技术（总论）

Kresnanto, Nindyo Cahyo^1 ; Sriyono, Edy^1

Civil Engineering Department, Faculty of Engineering Universitas Janabadra, Indonesia^1

关键词: Catchment area;    Dominant factor;    Geological conditions;    Literature studies;    Local government;    Mountainous area;    Recharge area;    Slope conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/508/1/012040/pdf
DOI  :  10.1088/1757-899X/508/1/012040

学科分类：工业工程学

来源: IOP

【 摘 要 】

To be able to assess or determine the recharge area, several parameters are needed. Until now, the criteria/parameters for determining the recharge area are still not standard and varied to each local government. The results of the literature study obtained 14 variables that can be used to determine the recharge area. These 14 variables, called longlist of variables, are then discussed with experts to determine the dominant variables to be used. The main variables for the determination of the recharge area are geological conditions, surface soil type, rainfall, and slope conditions. Each variable has a different influence weight depending on the condition of the region with the dominant factor is the geological condition. In the case of Bengawan Solo Catchment Areas, the weight of each variable was: geology (40%), surface soil type (30%), rainfall (20%), and slope (10%); The class range of each variable can vary depending on the condition of the study area. All of this data is processed with the Geographic Information System for analysis. It can be concluded the recharge area has the main characteristics of having a general direction of groundwater flow vertically downward, rock outcrops escape water-unsaturated water, hills or mountainous areas, volcanic body areas and cone peaks, and karst areas that have cracks and dissolution holes.