FAO Slope Class

The FAO slope class indicates the dominant relief or slope of a soil association. Three classifications (symbols a, b and c) are used.

Code Definition
HILLY Rolling to Hilly: dominant slopes ranging between 8-30 percent; (a)
HILLY-STEEP LEVEL Level to Gently Undulating: dominant slopes ranging between 0-8 percent; (b)
LEVEL-HILLY STEEP Steeply Dissected to Mountainous: dominant slopes over 30 percent. (c)