Revision Of Town Planning In The Pioverna Basin By The Use Of A Multidisciplinary Study To Identify Flood-prone Areas: Valsassina, Lombardy Region, Northern Italy
Price
Free (open access)
Transaction
Volume
134
Pages
13
Page Range
183 - 195
Published
2014
Size
3,110 kb
Paper DOI
10.2495/SAFE130181
Copyright
WIT Press
Author(s)
F. Luino, J. V. De Graff & P. Fassi
Abstract
This case study examines 10 municipal areas of the Pioverna River valley bottom (Valsassina, Northern Italy). Flood-prone areas were identified using historical research and geomorphological analysis. The historical research for different areas utilized records from the State technical office archives, Ministry of Public Works, Hydrographical Offices of the Po River, Civil Engineers, Records Office, public libraries, local and national newspapers archives, and municipal archives. Large amounts of historical data on past floods were collected, reviewed and validated on map flood-damaged locations. A geomorphological analysis was also conducted in which multi-temporal aerial photographs were studied and field surveys conducted to verify the reliability of the historical data and the planform changes of the Pioverna River course. The analysis of historical and geomorphological data produced a flood-prone area map with two different hazard zones identified along the Pioverna River. Aerophotogrammetric and cadastral maps were used to verify and update the urban planning of the 10 municipalities studied. The mosaic map of the urban planning shows four classes of land-use destinations, as defined according to the different levels of building exposure. On a matrix, the four land-use classes were matched to flood hazard sites of the two zones along the Pioverna River. The resulting map defines five classes of different flood risk. The results of the
Keywords
flood-prone areas, multidisciplinary study, damage, Alps