GET HELP DONWLOAD Default CN2 in MGT. A default CN2 is defined in mgt file as shown in following examples.49.00 | CN2: Initial SCS CN II valueQuestion 1: Where does this default CN2 come from?The default CN2 comes from either crop table or urban table of SWAT2012.mdb. Four columns (CN2A, CN2B, CN2C, CN2D) are defined …