WETLAND DETERMINATION PROCEDURES AID #1 

 FLOW CHART* 



SOIL SURVEY-Determine Soils - Are 

 there map units on the county 

 (field office) hydric soils list? 



Hydric soils list includes: 

 hydric soil map unit, aap 

 unit with named hydric 

 inclusions and wet miscel- 

 laneous areas. 



Dse ASCS photos received with 1026; 

 may need to review original ASCS 

 photos 



Review 



Soil survey map 



for wet symbols 



Review 



uses quads 



for wet symbols 



Review 



OSFWS NWI maps 

 for wet symbols 



Review 



ASCS/SCS large black and white, or 



infrared photos (eg. 4" = 1 mile scale) 



♦Experience over time will normally reveal that some individual sources are more 

 helpful or accurate than others; in which case this flow chart should evolve at ' 

 each location to facilitate the use of those sources first. 



A-8 



