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ARS Home » Midwest Area » Columbia, Missouri » Cropping Systems and Water Quality Research » Research » Publications at this Location » Publication #92623
Title: HYDROLOGIC SOIL GROUP ASSIGNMENT

Author
item NIELSEN, ROBERT - NRCS
item Hjelmfelt Jr, Allen

Submitted to: American Society of Civil Engineers Water Resources Conference Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 8/3/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Assignment of soils to hydrologic soil groups has been based on published criteria subjectively interpreted and applied by soil scientists. As a result hydrologic soil group placement for any given soil lacks consistency of method and correlation to the respective soil's physical properties. A method of placing soil into hydrologic soil groups was developed using fuzzy systems techniques. This method consists of a set of fuzzy system rules and evaluations that establish a consistency in the interpretation of hydrologic soil group criteria. The fuzzy system placement of soil into a hydrologic soil group correlates well with previously established placements. This approach also identified those soils that may have been improperly placed in a given hydrologic soil group and those that have insufficient data to make a proper group placement.