Jeff,

RMAXINF was coded into the two infiltration methods as a simple means of
modeling areas where the water table is close to the ground surface.
When the total volume infiltrated equals RMXAINF (i.e., when enough
infiltration has occurred to cause the water table to rise to the
surface), the infiltration rate is set to zero. The RMAXINF option can
be used for single event simulation with Horton or Green-Ampt. However,
I believe that RMAXINF can only be used for continuous simulation when
using Horton, since this is the only method for which regeneration of
the parameter has been coded. RMAXINF begins when surface storage on the
pervious plane is depleted and uses the same exponential recovery that
is used to regenerate the maximum Horton infiltration rate.

Greater control of modeling a rising water table can be obtained using
the groundwater routine in Runoff, but the input requirements are much
more extensive.

Brett Cunningham
BCunningham@JEA.NET