This remote Victorian dam lies in the Snowdonia National Park in North Wales. A TerraDat geophysical team were hired to investigate possible leaks within the structure using a technique called Self Potential. In order to model the geophysical results and get an accurate record of the topography, 47 images were acquired using a drone. Using Capturing Reality software, photogrammetric processing yielded an accurate 3D model and orthomosaic image to help present clear results to the client.