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Identification, delineation and mitigation |
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Wetland soils |
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Criteria for
hydric soils |
page 2 of 4 |
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Identifying hydric soils is a challenging task.
Indeed, it may seem like a foreign language. The
criteria are listed in case you have a budding
desire to be a soil taxonomist, but for the rest of
us, skip to number 1 below.
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A. All
Histosols except
foists;
B. Soils in Aquic suborders, Aquic subgroups,
Albolls suborder, Salorthids great group, or Pell
great groups of Vertisols that are:
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1. Somewhat poorly drained and have a water table
less than 0.5 feet from the surface for a
significant period (usually a week or more) during
the growing season, or
2. Poorly drained or very poorly drained and have
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a. A water table at less than 1.0 foot from the
surface for a significant period (usually a week or
more) during the growing season if permeability is
equal to or greater than 6.0 inches/hour in all
layers within 20 inches; or
b. A water table at less than 1.5 feet from the
surface for a significant period (usually a week or
more) during the growing season if permeability is
less than 6.0 inches/hour in any layer within 20
inches; or
c. Soils that are ponded for long or very long
duration during the growing season; or
d. Soils that are frequently flooded for long
duration or very long duration during the growing
season.
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