I have a simple inflow problem that I cant seem to figure out. I have a reservoir with a branch inflow. The inflow will always flow into the upper most active layer as the reservoir level goes down over the summer. I know how to specify the inflow to go into a specific specific layer or layers, but how can I force the inflow to only go into the upper most active layer, a layer that will be gradually changing over the summer.
branch inflow
Thanks Chris. Tom