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Trouble with Census Data

Question asked by rsuhs0904 on Jun 19, 2020
Latest reply on Jun 19, 2020 by jborgion

I am doing project calculating displacement due to sea level rise (SLR). I am doing so by using intersecting the SLR polygons with census tracts for each state and then running zonal statistics as table with the intersect shapefile and a Gridded Population raster. However, when I run the zonal stats as table tool, I get higher rates of displacement than is reasonable. For example, one census tract has a total population of ~8,000 but the calculated displacement for that tract is ~12,000. Is there a reason for why I am getting higher rates of displacement than I should be? Or is there a better method I should use? Thanks