GIS-Based Stream Gradient Model - Middle Fork GIS
This is a AML-based model for determining the gradients of arcs in a stream
(or other line) coverage based upon an underlying elevation grid (DEM).
Moreover, the model will first split long arcs into shorter segments of a
specified length to provide a finer resolution of stream gradients.
Model components include:
- arcsplit.aml - create a new coverage by splitting arcs at a user-specified
distance. This AML makes works by creating an event table where each
event represents an interval along the original arc.
- streamgradients.aml - Determines the elevations of from and to nodes in a line coverage which is coincident with an underlying elevation grid, then uses these elevations and the arc length to calculate a gradient for each arc.
Download the stream gradient model with documentation and a sample data set