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Assessing the influence of uncertainty in land cover mapping and digital elevation models on flood risk mapping
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| This paper proposes an approach to assess the influence of the uncertainty present in the parameters dependent on the land cover and elevation data over the peak flow values and the subsequent delineation of flooded areas. The proposed approach was applied to produce vulnerability and risk maps that integrate uncertainty for the urban area of Leiria, Portugal. A SPOT-4 satellite image and DEMs of the region were used. The peak flow was computed using the Soil Conservation Service method and HECHMS, HEC-RAS, Matlab and ArcGIS software programs were used. The analysis of the results obtained for the presented case study enables the identification of the order of magnitude of uncertainty associated to the watershed peak flow value and the identification of the areas which are more susceptible to flood risk to be identified. | 2.39 MB | Adobe PDF |
Advisor(s)
Abstract(s)
This paper proposes an approach to assess the influence of the uncertainty present in the parameters dependent on the land cover and elevation data over the peak flow values and the subsequent delineation of flooded areas. The proposed approach was applied to produce vulnerability and risk maps that integrate uncertainty for the urban area of Leiria, Portugal. A SPOT-4 satellite image and DEMs of the region were used. The peak flow was computed using the Soil Conservation Service method and HECHMS, HEC-RAS, Matlab and ArcGIS software programs were used. The analysis of the results obtained for the presented case study enables the identification of the order of magnitude of uncertainty associated to the watershed peak flow value and the identification of the areas which are more susceptible to flood risk to be identified.
Description
11th International Symposium on Spatial Accuracy Assessment in Natural Resources and Environmental Sciences, Accuracy 2014, East Lansing, 8 July 2014 through 11 July 2014 - Code 123763
https://scholar.google.com/scholar?q=Assessing%20the%20influence%20of%20uncertainty%20in%20land%20cover%20mapping%20and%20digital%20elevation%20models%20on%20flood%20risk%20mapping
https://scholar.google.com/scholar?q=Assessing%20the%20influence%20of%20uncertainty%20in%20land%20cover%20mapping%20and%20digital%20elevation%20models%20on%20flood%20risk%20mapping
Keywords
Uncertainty Watershed Peak flow Digital Elevation Model Multispectral Images Flood Risk Map
Citation
GONÇALVES, L. M., FONTE, C. C., & GOMES, R. Assessing the influence of uncertainty in land cover mapping and digital elevation models on flood risk mapping.
Publisher
International Spatial Accuracy Research Association (ISARA)
CC License
Without CC licence