METHOD FOR COMPUTING WATERSHED BOUNDARY BASED ON DIGITAL ELEVATION MODEL, APPARATUS, AND RECORDING MEDIUM THEREOF

摘要

The present invention relates to a method for calculating a watershed boundary, a device therefor, and a recording medium recording the same, the method for calculating a watershed boundary according to the present invention comprises: receiving and storing a standard watershed division map from an external server; Receiving a target location corresponding to an outlet of a watershed to be calculated based on a numerical elevation model through a user interface unit; Calculating a first watershed with the target location as an exit based on the value of the grid cell of the numerical elevation model; And calculating a final watershed boundary by reflecting a part of the boundary of the first watershed based on the boundary of the standard watershed according to the standard watershed division map. Through this, when calculating the watershed boundary based on the numerical elevation model, it is possible to calculate the watershed boundary that meets the standard watershed boundary provided by the relevant organizations, thereby improving the reliability of the results.