The relationships among matric potential, soil water content, and hydraulic conductivity are parameterized by a modified Clapp-Hornberger formulation with values given at field capacity. Water is added to groundwater by gravity drainage from the deepest soil layer. A fixed fraction of the groundwater outflow may be deep seepage. This can be compared with measured streamflow if that is available. The standard version is designed to run on any machine that has a Fortran-77 compiler.
Compilation is necessary.
The program may be freely modified. The PC Version runs on a PC with DOS 3.3 or higher. These files do not have measured streamflow. File HB6469W6.DAT contains 6 years of data for Watershed 6 at the Hubbard Brook Experimental Forest in New Hampshire . This file has measured streamflow but does not have vapor pressure or wind speed data.