You need the 2008 raster design object enabler for 2008 civil3D: http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=9476871&linkID=9240618
Stream Restoration Engineering using Autodesk Civil 3D & Map 3D
You need the 2008 raster design object enabler for 2008 civil3D: http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=9476871&linkID=9240618