This research intends to elaborate a subsoil profile for the region of the North Zone of the city of Rio de Janeiro, Brazil, encompassing the districts of Abolição, Água Santa, Benfica, Bonsucesso, Cachambi, Del Castilho, Engenho de Dentro, Encantado, Engenho Novo, Higienópolis, Inhaúma, Jacaré, Jacarezinho, Lins de Vasconcelos, Manguinhos, Méier, Maria da Graça, Piedade, Pilares, Quintino, Riachuelo, Rocha, Sampaio, Tomás Coelho, Todos os Santos and Vila Isabel, in a total area of 33 km 2 . The methodology aiming this objective involved the recovery and interpretation of borehole logs, several field trips to the selected region, analysis of maps and aerial images, bibliographic reviews and extensive data search in several public archives. A database was constructed using the software ArcView, for geographical information system applications, and a digital cartographic map on scale 1: 2,000. Graphical entities, representing the borehole positions, were also incorporated as well as all other information of interest drawn from the borehole logs, such as depth of the groundwater level, number of recorded SPT blows along the soil profile, a qualitative description of the local stratigraphy, depth of the sound rock, date of test execution, etc. A 3D visualization was also produced, employing the data correspondign to a smaller subregion (3.30 km 2 ), where both the number and distribution of boreholes were considered satisfactory in a preliminary analysis. GIS-based applications, possible associated with geoestatiscal methods, may be of fundamental interest and importance in regional studies involving urban planning, decision-making strategies, elaboration of maps of risk, subsoil and groundwater contamination, among many other applications in the field of geotechnical and geological engineering.