Applied geomorphological map of the portofino municipal territory (Italy)

Abstract

Here we present an applied geomorphological map at a scale of 1:5,000 of the Portofino territory (Italy). The map was compiled by combining available geological and hydrogeological information with a new geomorphological field survey and data derived from geotechnical studies carried out for town planning and building purposes. Portofino is one of the most well known old town centres; its territory is entirely included in the Park of the same name created in 1935. This charming village is located at the mouth of Fondaco Stream. Although the catchment has a limited size - its highest altitude is just over 200 m a.s.l. - the watercourse drainage culverts built in the late 19th century cause hazards caused by gravity, flowing water and wave action. We used the following methods: a) bibliographic and map research of scientific papers; b) a geological field survey, preceded by photo interpretation; c) stratigraphic and geotechnical data collection where building sites are located; and d) laboratory tests to determine rock strength. This paper presents an example of geocartography that could be applied to land planning in areas with high landscape value but threatened by geomorphological hazards.