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 computing a watershed boundary, an apparatus thereof, and a recording medium storing the same. According to the present invention, the method comprises the following steps: receiving a reference watershed division map from an external server to store the same; receiving, through a user interface unit, a target position corresponding to an outlet of the watershed to be computed based on a digital elevation model; computing a first watershed setting the target position as the outlet based on a value of a grid cell of the digital elevation model; and reflecting a part of the boundary of the first watershed based on the boundary of the reference watershed in accordance with the reference watershed division map to compute the final watershed boundary. Accordingly, when computing the watershed boundary based on the digital elevation model, the watershed boundary corresponding to the reference watershed boundary provided from a related organization can be computed, thereby increasing reliability for a computing product.