This pane is on the MODFLOW Features tab of the Object Properties dialog box.
CROP_COEFFICIENT (Kc) is multiplied by the ETref to get Consumptive Use (CU) -- input requires that REFERENCE_ET (ETref) to be specified
CONSUMPTIVE_USE (CF) specifies directly the CU
Potential Consumptive Use CU = CF + Kc*ETref
If CROP_COEFFICIENT is not specified, it is set to zero.
If CU = 0.0, then no consumption is possible and the crop is treated as if it is scraped clean earth, and all precipitation either becomes runoff or deep percolation.
If the ZERO_CONSUMPTIVE_USE_BECOMES_BARE_SOIL option is specified, then groundwater evaporation will occur with a potential rate set to (in order of priority):
1.If POTENTIAL_EVAPORATION_BARE is provided, it is used as the potential evaporation of groundwater underneath the bare soil
2.If REFERENCE_ET is provided, it is used as the potential evaporation of groundwater underneath the bare soil
3.There is no groundwater evaporation
