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I am wondering if there is a way to create a hydro-breakline enforced DEM by means of any open source solution?

I am able to create a DEM from Lidar data using GRASS, but would like to enforce some 3D hydro breaklines into the DEM. I am looking for something similar to creating a DEM from a Terrain available from ESRI.

Any ideas?

-Jeremy

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In GRASS GIS, you can use r.carve, hence take vector stream data, transform to raster data model and subtract the depth from the DEM using this module. See also http://grasswiki.osgeo.org/wiki/Hydrological_Sciences

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