Module 4: Coastal Flooding

 For Module 4, we went over different techniques for analyzing coastal flooding and improving the accuracy for potential flooding from future tropical events. 

The first analysis was done on Pre and Post elevation changes in New Jersey due to Hurricane Sandy. Using what we previously learned, Digital Elevation Models (DEMs) were created and then the raster calculator was used to find the elevation changed from pre Sandy to post Sandy. 

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The next anaylsis was using the given DEM and classifying it to depict the areas flooded and not flooded in Cape May County, New Jersey. After intersecting the flood zone with the county boundary, the percentage impacted by storm surge was calculated. In this case, 90% of the area was affected.  

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Finally, the last analysis was to use LiDAR and USGS flood zone projections and the accuracy they have from 1-meter storm surge impacts on buildings within Collier County. By using the reclassify tools for the two DEMs and selecting by attributes and their intersection with specific flood zones gave the results below. The buildings in each or both flood zone were symbolized to easily depict which building was where. 

Overall, the analysis done showed helpful tactics to determine where future flooding would heavily impact areas over others. There is still many improvements needed and inaccuracies when analyzing for potential risks as various factors affect flooding.