

 Version    Date    Description
 -------  --------  ---------------------------------------------------------
   2.3    95/03/30  Correction made in hspf simulation of evapotranspiration.

                    There was a problem in subroutine ETLZON with the check
                    to see if there was enough storage in the lower zone
                    to meet the potential.  If not, LZET had been set to
                    the current lower zone storage (LZS), completely emptying
                    the storage, causing an underflow to occur in subroutine
                    SURFAC.  The code was modified to set LZET to
                    LZS - 0.02, leaving a small amount in storage.
