MA EPHT - Vulnerability Mapping Tool Data Sources

Data sources used in the vulnerability mapping tool.

The American Community Survey (ACS) 5-year (2017-2021) estimates were used for the demographic data presented in the vulnerability mapping tool. The estimates are based on collected data and are considered to be the most reliable when compared to the 1-year and 3 year estimates. Specific information on the sources of the data and methods for each ACS-derived indicator are available using American Factfinder (http://factfinder.census.gov/) Data sources for additional calculated variables are included and summarized below.

Climate vulnerability indicator data sources

Percent of Population Younger than 5

• ACS 5-year 2017-2021 Table B1001 AGE and SEX 2017-2021 American Community Survey 5-Year Estimates

Percent of Population Younger than 15

• ACS 5-year 2017-2021 Table B1001 AGE and SEX 2017-2021 American Community Survey 5-Year Estimates

Percent of Population Older than 65

• ACS 5-year 2017-2021 Table B1001 AGE and SEX 2017-2021 American Community Survey 5-Year Estimates

Percent Population Older than 65 Living Alone

• ACS 5-year 2017-2021 Table B1001 HOUSEHOLDS AND FAMILIES 2017-2021 American Community Survey 5-Year Estimates

Percent of Population Living Alone

•  ACS 5-year 2017-2021 Table B1001 HOUSEHOLDS AND FAMILIES 2017-2021 American Community Survey 5-Year Estimates

Percent of Population that Does Not Identify as White

•  ACS 5-year 2017-2021 Table S0601 SELECTED CHARACTERISTICS OF THE TOTAL AND NATIVE POPULATIONS IN THE UNITED STATES 2017-2021 American Community Survey 5-Year Estimates

Percent of Population Living Without High School Education

• ACS 5-year 2017-2021 Table B15003 EDUCATIONAL ATTAINMENT FOR THE POPULATION 25 YEARS AND OVER Universe: Population 25 years and 2017-2021 American Community Survey 5-Year Estimates

Percent of Population Living at or Below Poverty*

• ACS 5-year 2017-2021 Table B17001 POVERTY STATUS IN THE PAST 12 MONTHS 2017-2021 American Community Survey 5-Year Estimates

Percent of Families Living at or Below Poverty*

• ACS 5-year 2017-2021 Table B17023 POVERTY STATUS IN THE PAST 12 MONTHS 2017-2021 American Community Survey 5-Year Estimates

Percent of Households where no one age 14 or older speaks English Only or "well" or "very well"

• ACS 5-year 2017-2021 Table C16002 2017-2021 American Community Survey 5-Year Estimates

Percent of Residential Land in 100-year flood zone

• MassGIS Data: Protected and recreational open space

Percent of community residential zones in 100-year, 500-year, and Coastal High Hazard flood plains

• MassGIS Data: FEMA 2014 National Flood Hazard Layer
• MassGIS: Q3 Flood Zones 2005
•  USGS Land Use 2005
• MassGIS Data: US Census 2010 MA Communities
• UMass Donahue Institute: US Census ACS 2015 Estimated Population for MA Towns

Estimated community population living in 100-year, 500-year, and Coastal High Hazard flood plains

• MassGIS Data: FEMA 2014 National Flood Hazard Layer
• MassGIS: Q3 Flood Zones 2005
• USGS Land Use 2005
• MassGIS Data: US Census 2010 MA Communities
• UMass Donahue Institute: US Census ACS 2015 Estimated Population for MA Towns

Impervious areas

• MassGIS Data: Impervious Surface 2005