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Level: Intermediate
Identification of redoximorphic concentrations and depletions of iron in soil has been employed as a relatively inexpensive method of determining the depth to a seasonal high water table. This is based upon the USDA-NRCS use of these features to determine aquic moisture regimes. Reducing conditions brought on by saturation of soil with water leads to reduction and migration of iron out of the profile, leaving these features as markers. Unfortunately, there is no mechanism for these features to un-form, so these determinations can be in error. We will explore the latest on this methodology and its strengths and weaknesses, enabling attendees to make better interpretations in the field.
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