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Drainage class (natural)" refers to the frequency and duration of wet periods
under conditions similar to those under which the soil formed. Alterations of
the water regime by human activities, either through drainage or irrigation,
are not a consideration unless they have significantly changed the morphology
of the soil. Seven classes of natural soil drainage are recognized-excessively
drained, somewhat excessively drained, well drained, moderately well drained,
somewhat poorly drained, poorly drained, and very poorly drained. These classes
are defined in the "Soil Survey Manual.
The State of Connecticut defines inland wetlands based on soils.
The Connecticut Inland Wetlands and Watercourses Act defines wetland
soils to include any of the soil types designated as poorly drained,
very poorly drained, alluvial, or floodplain by the National Cooperative Soil Survey,
as may be periodically amended, of the Natural Resources Conservation Service
of the United States Department of Agriculture.
Map units dominated by Connecticut inland wetland soils may have inclusions
of non-wetland soils, and non-wetland map units may have inclusions of
Connecticut inland wetland soils. On site investigation is necessary to
determine the presence or absence of wetland soils in a particular area.
This data set is a digital soil survey and generally is the most
detailed level of soil geographic data developed by the National
Cooperative Soil Survey. The information was prepared by digitizing
maps, by compiling information onto a planimetric correct base
and digitizing, or by revising digitized maps using remotely
sensed and other information.
This data set consists of georeferenced digital map data and
computerized attribute data. The map data are in a soil survey area
extent format and include a detailed, field verified inventory
of soils and miscellaneous areas that normally occur in a repeatable
pattern on the landscape and that can be cartographically shown at
the scale mapped. The soil map units are linked to attributes in the
National Soil Information System relational database, which gives
the proportionate extent of the component soils and their properties.