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Using LIDAR to improve fluvial erosion hazard (FEH) mapping

A major source of flood losses is damage to roads, bridges, and other infrastructure caused by fluvial or river erosion - where flood waters erode stream and river banks or even change course, shifting where they flow across the landscape.  A challenge working with fluvial systems has been predicting where a shift will occur.  We are developing a data fusion approach to access the sensitivity of FEH in different physiographic regions of Indiana through the use of in situ and remote sensor data.  Specifically the 2011-2013 Indiana Orthophotography, LiDAR, and Elevation Dataset (IMAGIS), and alluvial soil layers generated by the Natural Resources Conservation Service (NRCS).  These data provide a tremendous amount of information allowing us to determine where the stream might potentially erode at both the watershed and stream reach scale. 

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