Hydrography – Rivers & Streams

Hydrography depicts surface water, including rivers and streams, lakes and ponds, canals, coastlines, and many other water features. The Hydrography layer combines two data sets: the 2014 National Map Hydrographic Geodatabase (1:1,000,000 scale) for small to medium scales, and the 2016 National Hydrography Datataset (NHD) (1:24,000 scale) for large scale mapping. Hydrography is depicted in…

Per Capita Income, 2014

This layer displays per capita personal income by county. This measure of income is calculated as the total personal income of the residents of an area divided by the population of the area. Per capita personal income is often used as an indicator of consumers’ purchasing power and of the economic well-being of the residents…

Households Receiving SNAP Benefits, Disparity Index Score

Layer displays information about racial disparity of poverty using data from the 2010-2014 American Community Survey (ACS). The Index of Disparity (ID) is used to show the magnitude of variation in indicator percentages across population groups. In this case, the index measures the difference in the percentage of the households receiving SNAP benefits across four…

Rural vs. Urban Childhood Poverty

This layer displays information about the difference between rural and urban childhood poverty across the United States. Data are based on census-tract level information from the 2010-14 American Community Survey. Census tracts are defined as urban or rural based on 2010 US Census Bureau definitions; tract level information is then aggregated to and displayed at…