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Pierce County elementary school feeder regions symbolized to show the percentage of impervious surface cover of the elementary school located within each particular region where green is a low percentage and red is a high percentage

Percent Impervious Surface Cover

Impervious Surface Cover for Pierce County Elementary Schools

The purpose of this exercise was to analyze impervious surface cover for Pierce County elementary schools. Starting with data for school locations and impervious surface data (obtained from Pierce County Open GeoSpatial Data Portal and USGS respectively). Thiessen Polygons were then calculated to generate the hypothetical feeder regions within which there is only one elementary school per region. Additionally, it was possible to calculate the percentage of impervious surface comprising each elementary school in Pierce County.

Pierce County elementary school feeder regions symbolized according to the size in acres of the school grounds located within each region where red is smaller acreage and green is larger acreage

Acreage of School Grounds

Pierce County elementary school feeder regions symbolized according to designation ('urban' or 'non-urban') and percentage of impervious surface cover ('high' or 'low' percentage) for each region's respective school.

Impervious Surface Cover by Designation

Interactive Elementary School Surface Cover Data

Locations of each elementary school in Pierce County, WA with hypothetical school feeder regions symbolized based on the impervious surface cover of each feeder's respective elementary school. Data was derived from USGS and Pierce County Open GeoSpatial Data Portal.

Final Product

Determining Elementary School Feeder Regions

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