Contents of the
                                 SREGIONS.DAT
                                     file
                                  Version 1.0
                                    09/12/96


              The file is sorted on the region code (columns 1-2)
              and within that on the subregion code (columns 3-4).

Columns  Format  Contents

  1-2     I2     Region code - The Water Resources Council region code
                    identifying each of the 21 major hydrologic basins of the
                    U.S.  It is the first two digits of the hydrologic unit
                    code (HUC).
  3-4     I2     Subregion code - The two digit code identifying the subregion
                    within the region.  It is the third and fourth digits of
                    the HUC.  This field is blank for a region.
   5      1X     Blank.
  6-56    A51    Region name if the subregion code is blank or subregion name
                    if the subregion code is not blank.


Note:

   Subregion 2010 is not an official subregion and is included in the file for
convenience.


Format descriptions:

   I2    an integer field 2 columns wide.
   A51   a character field 51 columns wide.
   1X    a single blank column.