Is anyone aware of free, public domain ArcView Avenue scripts (or other programs) that compute slopes and width parameters for input to SWMM RUNOFF from detailed elevation data in DEM format?

SWMMTools computes a width based on the dimensions of the watershed boundaries. CDM has developed tools for specific projects that compute length-weighted slopes and flow lengths from which a width can be computed (PlanteTools) though these aren't highly developed or documented and aren't available for public use.

Thanks for the input.

Charles I. Moore, P.E.
MOORECI@CDM.COM