Hydric Soil Identification Techniques - Wetland Techniques - page 264

Thien SJ (1979) A flow diagram for teaching texture-by-feel analysis. J Agron Educ 8:54-55
U.S. Army COE (2012) Interim regional supplement to the corps of engineers wetland delineation
manual. http://www.usace.army.mil/Missions/CivilWorks/RegulatoryProgramandPermits/
reg_supp.aspx
USDA, FSA. National Food Security Act (1985) P.L. 99-198, 99 Stat. 1354-1660, 23 Dec 1985.
[16 U.S.C. Section 3801(a) (12)]
USDA, NRCS (2006). Land resource regions and major land resource areas of the United States,
the Caribbean, and the Pacific Basin. USDA Handbook 296. http://soils.usda.gov/survey/
geography/mlra/index.html
USDA, NRCS (2010a) Field indicators of hydric soils in the United States. Ver. 7.0. In: Vasilas
LM, Hurt GW, Noble CV (eds) USDA, NRCS in cooperation with the National Technical
Committee for Hydric Soils. ftp://ftp-fc.sc.egov.usda.gov/NSSC/Hydric_Soils/

FieldIndicators_v7.pdf
USDA, NRCS (2010b). From the surface down. An introduction to soil surveys for agronomic use.
ftp://ftp-fc.sc.egov.usda.gov/NSSC/Educational_Resources/surdown.pdf
Vepraskas MJ (1994) Redoximorphic features for identifying aquic conditions. Tech Bull 301.
North Carolina Agricultural Research Service, North Carolina State University, Raleigh

Student Exercises

Classroom Exercises

Classroom Exercise #1: Sources of Hydric Soil Information

Objective: To familiarize students with sources of hydric soils information.

Procedures:
Take a moment to explore the following sources of hydric soils information
derived from the soil survey for your selected site location.
1. Go to the NTCHS website ( http://soils.usda.gov/use/hydric/ ) and look up the
national Hydric Soil List and find the soil survey area your site is located in.

(a) Note the soil survey area which is located in column B.
(b) Column D contains the map unit symbol as it is mapped in the official soil
survey.
(c) Column E contains the map unit name as it is named in the official soil
survey.
(d) Column F contains the component name(s) that are hydric soil components
of that map unit. Note that some components are major components that are
named in the map unit name and others are minor components (inclusions)
within the map unit.
(e) Column G contains the percentage of that map unit that contains a hydric soil
component.