Hi, I would like to model the velocity of water flow in an open channel by Kriging method(I asked the possibility of using Kriging for this aim before and it seems that this method can be used for every condition). I collected my data on the cross section of the channel and depicted as a point data. The scattered data picture is attached and as you see two red and blue sorts of data(blue data have zero value while red data have nonzero value) and the coordinate of each point data is shown in x,y plane. I try to run Kriging method in ARC GIS10 with one condition which is: the **blue points** must have no spatial relation with the other **blue points.** How can I apply the mentioned condition in ARC GIS10?(I think this condition influences on empirical semivariogram and the weights related to the blue point data)

So that is a cross section, with the blue dots / line being the channel wall / base.

Why not try other (simpler) interpolation methods like nearest neighbor or idw first.

The blue data is just the bounding extent if I have understood your post correctly.