Figure 2. Location of the study area and a topographic map.
2.2 Study Materials
Table 1 lists information about the study materials. Land use was classified using survey data from the National Land Surveying and Mapping Center. Soil maps from the Soil and Water Conservation Bureau were used to determine the hydrologic soil groups. Furthermore, the spatial distribution of CN values was estimated using land use and the hydrologic soil groups. Rainfall, flow rate, and SY data were acquired from the observational data of the Water Resources Agency, Ministry of Economic Affairs as a reference for long-term analysis and verification. In addition, DEM was used to determine the subdivision delineation of the catchment area.
Table 1. Study materials.