The process of Making a functioning Model

From GeoMod

To make a functioning model for this project, I first needed to define the drainage basin. I found the highest point in the study area and followed the ridge to the left and right side of that highest point to make the drainage boundaries. The bottom boundary is just a line from the end of the left boundary to the end of the right boundary. This makes a triangular section that I am able to work with. A gray post at the top of the basin represents the highest point.

The next task was to find the Mid-line of the drainage basin. I found the position of the midpoint for each data point in the left and right boundary arrays. A curve was fitted to each of these points that represents the mid-line of the drainage basin. I left the mid-line in an x,y,z plane and did not fit it down to the surface of the basin because I wanted to keep it as the true midpoints between the two boundaries.

The river channel was then found by the same process as the boundaries but instead of following the highest points, the river curve followed the lowest points up the drainage basin.

Certin boundaries had to be specified when finding adjacent highest or lowest points or else it would go in a circle around the starting point. For example, I specified a prefered direction of east and south for the right boundary.

Here are some images of the drainage basin boundaries, river channel, and the mid-line

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