The following document describes the development of a telemetry system for the measurement of depressions and elevations in a vacant lot, implemented in an unmanned aerial vehicle in order to obtain information to know the height of the ground (elevation or depression) With their respective geographical position. This system consists of five fundamental parts; The first is the Unmanned Aerial Vehicle (UAV), for this case is the Quadcopter SK450 Turnigy model, which brings the flight controller kk2.1.5, in addition this drone works with 4 motors without brushes the Brushless Multistar 2213 with 935kv and a maximum thrust of 850g per engine. As second part are the sensors and necessary elements in the system; The temperature sensor (DS-18B20) and the ultrasonic sensor HC-SR04, the latter will know the depressions and elevations of the place, in addition is the NEO-6M GPS providing the position of the drone, therefore the position of the measurement. You also have the RTC DS-1307 (real time clock) and finally the Micro SD Card in which each of the data of the sensors and devices mentioned are saved. As a third part, the acquired data control implemented in the Freescale FRDM-KL25Z development board is the fourth part. It consists of sending the data obtained through the Xbee pro 2 communication modules. Finally, in the graphical programming environment LabVIEW It designed two user interfaces: the first works with online data sent from the drone, at the time of the flyover and the second interface works with the data stored in the SD CARD in case an analysis is desired after completing the routes.