APPENDIX 

 HYDRIC SOILS CRITERIA 



1. All Histosols except Folists, 



2. Soil in Aquic suborders, Aquic subgroups, Albolls suborder, Salorthids great 

 group, or Pell great groups of Vertisols that are: 



a. Somewhat poorly drained and have a water table less than 0.5 feet froa 

 the surface for a significant period (usually a week or aore) during the 

 growing season, or 



b. Poorly drained or very poorly drained and have either: 



(1) Water table less than 1.0 feet from the surface for a significant 

 period (usually a week or aore) during the growing season if 

 permeability is equal to or greater than 6.0 inches/hour in any layer 

 within 20 inches, or 



(2) 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 . 



3. Soil that are ponded for long (7 days to 1 month) or very long (longer than 

 1 month) duration during the growing season. 



4. Soils that are frequently flooded or long (7 days to 1 month) or very long 

 (longer than 1 month) duration during the growing season. 



WETLAND PLANT INDICATOR GROUPS 



Indicator Croup 



obligate (obi) 

 facultative wet (facw) 

 facultative (fac) 

 facultative upland (facu) 

 upland (upl) 



A prevalence value of 2 3 is not wetland, <3 is wetland. 

 'National List of Plant Species that Occur in Wetlands. 



A-1 



