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Shin, B.-S. and Kim, K.-H., 2023. Dynamic observation for terrain volume estimation using UAV-based photogrammetry. In: Lee, J.L.; Lee, H.; Min, B.I.; Chang, J.-I.; Cho, G.T.; Yoon, J.-S., and Lee, J. (eds.), Multidisciplinary Approaches to Coastal and Marine Management. Journal of Coastal Research, Special Issue No. 116, pp. 658-662. Charlotte (North Carolina), ISSN 0749-0208. Shoreline changes its shapes and attribution dynamically through natural, and unnatural acts and is the most information for the country. These shorelines can apply to the framework data of MGIS (Marine Geographic Information System), and they are getting important to implement a phase of monitoring around coastal areas. Recently, low-cost, miniaturized hyperspectral imaging technology is becoming available for small Unmanned Aerial Vehicle (UAV) platforms. Shoreline change has been measured with conventional surveying techniques such as Total station, GNSS, EDM, etc. These measurements provide short and long-term variations of nearshore evolution which enables us to estimate the erosional and accretion sediment volume of the beach. This observation of coastal morphology currently has been utilized through the advance of optical imaging systems and related digital image analysis. The purpose of this study is to examine the accuracy according to the number and location of ground reference points prior to shoreline survey using unmanned aerial vehicles. Therefore, in this study, in order to analyze the accuracy of topographical information according to the distribution of ground reference points, the topographical information was analyzed using image data captured using an unmanned aerial vehicle and the topography was analyzed using ground-type LiDAR (Light Detection And Ranging) Information was compared with each other. This study was conducted using more than 2,000 photos and 60 ground points taken in a total area of 900 ha, and it was confirmed that the accuracy of geographic information greatly depends on the number of GCPs used for Bundle Adjustment (BA). [ABSTRACT FROM AUTHOR]