Normalized First Street Census-Tract Data V1.3

Normalized 2020 and 2050 First Street flood risk data aggregated at the census-tract level. A lower number indicates less risk (0 is minimum) and a higher number indicates more risk (1 is maximum). The normalization process subtracts the mean from the local value and divides it by the standard deviation: ((tract_value - overall mean) / stand_dev). The overall mean is the national average of all census tracts.

If you are interested in acquiring First Street flood data, you can request to access the data here. More information on First Street's flood risk statistics can be found here and information on First Street's hazards can be found here.