This data set includes all soil map units that are defined
as Hydric in the SSURGO data base. The SSURGO data set is a digital
soil survey and is the most detailed level of soil geographic data
developed by the National Cooperative Soil Survey. The information
was collected by digitizing maps, by compiling information onto a
planimetric correct base and digitizing, or by revising digitized
maps using remotely sensed and other information.
The SSURGO data set consists of georeferenced digital map data and
computerized attribute data. The map data are in a full county
format and include a detailed, field verified inventory
of soils and nonsoil areas that normally occur in a repeatable
pattern on the landscape and that can be cartographically shown at
the scale mapped. Sometimes a special soil features layer (point
and line features) is included. This layer displays the location of
features too small to delineate at the mapping scale, but they are
large enough and contrasting enough to significantly influence use
and management. The soil map units are linked to attributes in the
Map Unit Interpretations Record relational data base, which gives
the proportionate extent of the component soils and their
properties.
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The data set has been provided to Chester County Departments and
PASDA as an ArcView shapefile by the County of Chester, Department
of Computer and Information Services. The theme has been
reprojected to PA Stateplane (South) NAD83 from its original datum
in accordance with the base map standards of the County of Chester.
The County of Chester serves as the secondary organization in
providing this shapefile, as compared to its originator and primary
organization, the Natural Resources Conservation Service .
United States. Department of Agriculture (1997). Hydric Soils [Pennsylvania--Chester County] {1997}. . https://www.pasda.psu.edu/uci/DataSummary.aspx?dataset=68 (dataset)