Moisture Class Codeset


Code Definition
AQUIC Soil saturated moderately long periods
ARID Soil dry, never moist as long as 90 days
HUMID Very slight water deficits (2.5 - 6.4 cm)
PERAQUIC Soil saturated long periods of time
PERHUMID Water deficits 0.0 - 2.5 cm during growing season
SEMIARID Some parts dry during growing season most years
SUBAQUIC Soil saturated for short periods of time
SUBARID Soil dry, periods up to 90 days when soil moist
SUBHUMID Significant moisture deficit during growing season (6.4 - 12.0 cm)
XERIC Soil dry 45 of 120 consecutive days after winter/summer solstice