This application provides routines to develop stream breaklines from defined cross-sections, alignments, and profiles. The 3Dpolylines are used to define breaklines for the channel surface to create a riffle pool sequence within the design surface. The inputs are based on reference reach parameters and provide user feedback to allow for design review. The most recent design itteration is stored within the alignment so rapid adjustments and design iterations may be performed for design optimization.

The tool also includes a utility to convert 3D polylines to profiles along an alignment to facilitate projecting the thalwag breakline to the profile for plan production.