This graduation thesis's main goal is to assess surface changes, which is done with computing of volume between two surfaces. It was done on a practical example of a scree on Potoška planina, for which we had two sets of observations made with one year in between. Simultaneously we wanted to determine the difference in computed volume with and without using the process of surface matching, which transforms a point cloud so that the distances between point clouds are minimal. Calculation of volume was done in national D96 coordinate system and in a local coordinate system. After analyzing the results, it is difficult to claim, that surface matching had any influence on computed volume, but graphical representation of results shows a different picture.