The digital elevation models (DEMs) are being widely used. Its applications can be related to prevention, planning and monitoring of activities in space, whether urban or rural. One of its main applications is linked to agriculture being a tool for strategic decision making to improve agricultural practices or reducing impacts on the environment. Measuring the accuracy of a DEM is a job that requires going to the field and check sampled points for the best models. This study aims to evaluate and compare the DEM with MDE generated from the contours of the IBGE. We performed trip to the field to collect sample points randomly in the study area. We applied the square root of the mean square error (RMSE) of the elevation of the extent of agreement Kappa. The altimetric variation between MDE made a small difference, and SRTM DEM presented the highest values in both the maximum altitude as the minimum. Regarding spurious depressions observed that the MDE SRTM showed a total of 10 times the value identified in the MDE curves IBGE. The drainage network extracted from DEMs showed a slight difference in their extensions, the MDE curves showed greater extent than the SRTM DEM. The RMSE of the two MDEs were low but still standard in accordance with a scale of 1:50,000.Pages: 4716-472
