Alluvial deposits on one or more terrace levels
Alluvial deposits in major stream channels or in mappable meanders of major streams - Includes alluvial deposits in natural levees in some areas.
Alluvial deposits of local streams or of overbank flow of major streams - In some areas includes deposits in abandoned meanders of major streams
Deposited mostly on terrace deposits of the second level. Younger than some terrace deposits, older than others