Geological and Hydrological Risk Areas in the city of Nanuque-MG

Abstract

This work aimed to identify and map geological and hydrological risk areas in the city of Nanuque in Minas Gerais. A bibliographic review was carried out on the themes involved, as well as technical survey in some points of the municipality. A total of six points were identified and classified as a risk area, two in Neighborhood Vila Esperança, three in Neighborhood Romilda Ruas and one in the downtown area of the municipality. Situations related to properties located on embankments with erosive signs, properties located in a flood basin and an embankment with signs that show mass movement were observed. The points located in the Vila Esperança neighborhood received the R3 (High Risk) classification, the areas identified in the Romilda Ruas Neighborhood were classified as R3 (High Risk) and R2 (Medium Risk). The point located in the downtown area of the city was classified as R4 (Very High Risk), representing the point with the highest risk among the analyzed locations. For solution or mitigation of observed situations where there is the presence of slopes, gabion walls can be used to stabilize the slopes. The places involving hydrological risks mainly involve actions by the public authorities in relocating families located at critical points and measures to prevent the installation of new residents.