Hi,
I'm trying to decide if I should apply the burn-in process as part of terrain preprocessing per the HEC GeoHMS user manual. I've read that when deciding to apply the burning-in process implies that flowline data are more reiliable than the DEM data.
So my question is, how should I go about determining if my NHD flowline data are 'better' than my USGS elevation data? What would be some key determining factors here?
A second and related question would be: what is an acceptable discrepancy between streams found using elevation data (w/ and w/out burning-in the flowline data) and actual locations?
Thanks in advance for any thoughts on this!
