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The frequent inspection of hydraulic structures in mountain catchments is important due to the changing interaction among water-related processes that take place in the context of hydro-meteorological hazards such as debris flow and flash floods. At first level inspections, reports from survey protocols carried out by trained citizen-volunteers are combined to provide an index that represent the status of the structure. The survey protocols aim at identifying needs for cleaning of obstructions or to pre-screen potential problems for a second level inspection or more technical and detailed inspection. Thus, reports are focused on the functional status for the following parameters: condition of the structure at the opening of the streamflow, level of obstruction at the structure and the level of erosion in the streambank. Each parameter is inspected by means of questions to observe while selecting from the available options in the survey protocol. This research presents a web-based tool to support technicians on the use of these reports for setting priorities for the inspection of structures. The decision support methodology is based on the fuzzy logic theory to handle imprecise judgments coming from the visual inspection, analytical hierarchy process (AHP) to weight the different components of each parameter and multi-criteria TOPSIS method to set priorities for the status of the structures according to each parameter. The experiences of actual technicians in using the tool and the feedback on the methodological approach for decision-making are presented from their implementation in a case study in the Fella Basin, Friuli-Venezia-Giulia region, Italy.


Session S10-01, Special Session: Combining Quantitative and Qualitative Data and Methods for Flood Resilience in Urban Areas



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