In open mining systems, the most important problem in mining production activities is surface water management, where surface water management is an integrated water management activity with the aim of minimizing the negative influence of surface water which consists of mine drainage methods, mine drainage, sediment separation and control. Geographic Information Systems (GIS) can be used for hydrological analysis using spatial data, especially in calculating runoff discharges from surface water. The method used in calculating runoff discharge is in the form of daily rainfall data. This rainfall data can show the influence of the catchment area which is useful for knowing precisely and accurately the runoff water discharge. Geographic Information Systems (GIS) are used to calculate variables in rational formula equations by overlay analysis. Information about digital-based hydrological conditions is very useful as a means of decision making and policies undertaken in monitoring hydrological conditions in open mines. By using a geographic information system (GIS) with a geodatabase attribute, it can be used to view general conditions in a mining area in monitoring hydrological conditions. So it is very appropriate to be used as hydrological monitoring in the mining area in making decisions that are fast, precise and accurate. Apart from that the geodatabase attribute can see the actual conditions of a mining area.

Mining activities related to excavation or landfill will always face problems with slopes, both in the form of working slope and final slope, in addition the groundwater factor in the rock layer increases the burden by filling pores and reducing friction inter-grain influences the slope stability. The slopes must be analyzed for stability to prevent landslide hazards because they involve work safety, equipment safety, and smooth production. PT. XYZ is a coal mining company located in the Lilin river, South Sumatra, planning to optimize and stabilize the final slope to a depth of 120 m. Geotechnical drilling has been carried out as many as 3 points with a total depth of 270 m and 80 samples of rock and soil testing. The results of optimization and stability of the slope by conducting dewatering at each elevation to obtain optimal slope conditions at PT. XYZ can be done up to elevation of -130 meters above sea level with a depth of 142 meters with an angle of 35° with the condition of the ground water level must be maintained at the halfway point of the slope (GWL Chart No. 3). Under water saturated conditions (GWL Chart No. 5) at the same elevation the permissible angle is only 25° with a final slope height of 136 m.

Regional development is a strategy of utilizing and combining internal factors (strengths and weaknesses) and external (opportunities and challenges) that exist as potentials and opportunities that can be utilized to increase the region’s production of goods and services that are a function of the needs both internally and externally. These internal factors are in the form of natural resources, human resources and technological resources, while external factors can be opportunities and threats that arise along with their interactions with other regions. The comprehensive spatial planning and development of the region certainly needs the support of information on the potential and constraints of the region with its own genetic background as a whole, meaning that all complete information about all aspects relevant to the spatial needs are met. Information for spatial planning includes potential including physical-mechanical properties of various types of rock masses. Leles is one of the sub-districts in Garut regency which has an area of 6.5 million hectares with a large potential of mining excavation. Regional Spatial Planning Arrangement based on the potential of mineral excavation ensures mining plans in the area do not kill other potentials and shows conformity to the plan long-term. Mountain sand eruption excavated as an industrial commodity is the biggest potential in the Leles region. The existing constraints are related to earthquakes and volcanic eruptions.