The Farm ID in FMP: Farm Process pane is on the MODFLOW Features tab of the Object Properties dialog box.
The Farm ID in FMP: Farm Process pane is used to define where farms are located. Farms are identified by a unique Farm ID (an integer) assigned to each farm.The locations of farms can vary with time. The properties of farms are defined in the Water Balance Subregions dialog box. In MODFLOW-OWHM verions 1, in addition to identifying farms, the Farm ID also sets the water rights priority of the farm with farms with lower farm IDs having higher priorities over farms with higher farm IDs.