Comparison of UAV Orthophoto and Ground Survey at a Flood Protection Embankment

Abstract

In the study, I compare the elevation data of points obtained from an orthophoto taken from a drone with the heights of points measured from the area by ground survey procedure and measuring station. I examine the usability of the points determined from the orthophoto for flood protection and for assessing flood protection embankments. I present the difficulties of assessing floodplains. The taking of orthophotographs and the data obtained from them may be important in determining the conditions after the floods have subsided and in detecting sediment deposition. My aim is to examine to what extent orthophotographs can be used to determine embankment heights in case of flooding, in order to avoid water overtopping of protective embankments.