arc2006

thanks a lot

I am a novice of feflow! I am making a simulation of the groundwater system of a arid region with irregation. Now,I am encountered some difficulties and I hope someone can do me a favor to answer the questions below.

1.my first question is Can Feflow describe the river and its interaction with the groundwater?

2. In my study region, the irrigation  often runs out of the water in the river at some place. I have the statistics of the flux at the upriver station and downriver station.The question is How can I get rid of the water used in irrigation from my river?
P.S.  my river is described by the discrete element in feflow

3.In the discrete element submenu, What exactly the following parameters stands for?
source/sink,roughness,cross area,transfer rate in/out.
and what do the Q and Qp mean in the fomula editor/user define!

thans for anyone's help!!