INVESTIGATION TECHNIQUES 



('" 



Infomation Needed 

 Hydric Soil 



Prevalence of hydrophytes 



Altered or Manipulated? 



Planted prior 12/23/85 



Abandoned? 



Possible Sources 



3 

 4 



»5 



«6 



»7 



8 



1 

 2 

 3 

 4 



•5 



1 

 2 



3 



4 



«5 



•6 



•7 

 «8 



1 



«2 

 3 

 4 

 5 



•1 



2 

 *3 

 *4 



•5 

 6 



County list 



Soil survey - sap unit 



descriptions, wet symbols, 



streams, springs, etc. 



uses quads ~ 



Climatological data 



Landovraer interview 



site investigation 



Take a soil scientist onsite 



flooding maps or inventories 



NVI 



ASCS color slides 



SCS black and white or color photos 



Soil survey vegetative info, map 



unit description tables 



Site investigation - including 



similar non-cropped areas 



NWI 



ASCS color slides - pre & post 85' 

 if possible 

 SCS photos 

 OSGS Quads 

 Case file 



Site investigation including land- 

 owner interview 

 Other employee interview 

 Landowner interview 



ASCS records and slides prior to 



12/23/85 



Case file 



Photo interpret 



Employee knowledge 



Landowner interview 



ASCS records and slides for the 



past 5 years 



SCS photos 



Case file 



Owner interview 



On-site inspection 



OSGS quads 



r 



c 



A- 10 



