Structure from motion photogrametry was used to survey the banks of the Ichilo river, in the city of Puerto Villarroel in Bolivia. The surveyed areas was of aproximately 300 hectares of terrain. A DJI Phantom 4 Pro and a DJI Mavic Pro was used for taking pictures. A total of 44 GCPs were marked along the riverbanks of the Ichilo and their coordinates were measured using a Real-time Kinematic (RTK) GPS unit. After the GCPs...