Read readme.txt for any important changes associated with this version
of the software. A user guide can be found in the "documentation" directory

(1) The test data GIS Ascii files are bkckelev.asc, bkcksoil.asc and 
    bkckluse.asc. These are processed when (1) is selected in the MAIN MENU
    to give as set of new data files which are used in the preparation of 
    the AGNPS data files. The data in the Ascii files are never altered.
    In the example, a value of 0.01 needs to be used to convert the 
    elevations in the Ascii file from centimetres to meters.
    
    An AGNPS attribute file is used during (3) in the MAIN NENU. A completely
    new AGNPS attribute file may be produced or an existing one used. 
    The AGNPS attribute file for the example does not usally have to be 
    generated since it should already exist as BKCKCAT.DAT in the directory 
    (folder) GISDAT. AGNPS.DAT can be edited by, for example, NOTEPAD if so 
    desired. 

    AGNPS uses Curve Numbers to model runoff. The impact of crop and crop on 
    runoff has to be considered explicitly with respect to the USLE-M. 
    This is achieved by a Curve Number adjustment (CNadj) factor. 
    This factor adjusts the Curve Number for the soil to that for the crop. 
    For example, if CNadj = 0.9 then the CN for the crop is 0.9 CNsoil. 

(2) A TOPAZ attribute file is required for running TOPAZ. If this file is
    generated after at least one of the GIS Ascii files is processed when
    (1) is selected in the MAIN MENU, then only the geographic ZONE number
    needs to be entered with respect to the GIS data. The ZONE in example
    is 56 but a ZONE number other than zero is optional. If the attribute
    file is not generated after one of the GIS Ascii files, then the corner
    coordinates for the GIS are requested. 

    Other data requested includes the min and max elevations (use 100 and
    1500), the grid cell size (100 metres), the row (21) and column (85)
    of the catchment outlet, the Critical Source Area for channel initiation
    (15 hectares works ok) and the minimum length of a channel (150 m). 
    **** NB: When TOPAZ is run through selecting (2) in the MAIN MENU, a 
    message appears saying that the CSA is too small. This message is
    incorrect and should be ignored by entering 1 in response to it.
    

    
  