Hi ... I am a student in Australia using GMS and I have a problem that I hope
someone can help me with.

I have a 2-layer model (bottom is confined and top is convertible) that is
bounded by a river defined as a specified head drop (as there is no information
on the flow rate or conductance etc.) on 2 sides and no-flow bedrock boundaries
on the other sides. I have created a solid model of the geology and mapped this
to a grid and have successfully created a flow model for the site.

However I am now trying to calibrate the model and determine the HK distribution
in each layer but am having no success. I have been using the GMS tutorials as
my guide and going to HELP as well. My problem at the moment is related to the
fact that I have water levels in both of my layers but I am finding that I can't
get the software to recognise that.

This is what I have done:
I have set up a group of 2D scatter points (the pilot points) across the domain
as described in the tutorial (which has only 1 layer unfortunately). I have a
single Observations coverage that includes the water levels in layers 1 and 2
but when I run it all points are being treated as though in layer 2 even though
some are defined as being in layer 1. I have also tried using 2 Observations
coverages separating the water levels into separate layers but still no success.

I have been trying different things over the last few days and I think the
essence of my problem is simply (and more generally) how to deal with pilot
points in 2 layers.

My only resource is the tutorials and they have only one HK layer, one
observation coverage and one set of pilot points.

Since I have 2 HK layers do I need to create:
(a) 2 separate observation coverages that separate the observation bores into
layer 1 and layer 2?
(b) 2 separate sets of pilot points?

Thanks ... Vivien