https://communities.bentley.com/products/road___site_design/f/geopak-inroads-mx-openroads-forum/137108/geopak-drainage-referenced-surface-profileI have a drainage profile that spans across 2 surfaces. The nodes are referencing their respective surface as seen in the attached image (see highlighted elevations). The Surface profile is drawn at a total different elevation. I have created a surfaceen-USTelligent Community 12https://communities.bentley.com/thread/415020?ContentTypeID=1Wed, 07 Jun 2017 12:23:03 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:b2f14361-1120-4cad-bcd2-fb95f2ba7487Beebe RayGEOPAK Drainage can draw three surfaces (TIN files) into a Profile. The first two, Existing and Proposed, are specified in the Project Preferences. The third, Reference Surface, is specified in the Profile dialog under the Reference Surface section. Typically the surface or TIN file should cover the entire project area because the program simply drapes a linestring, based on the profile run, onto the surface and plots it in profile.<div style="clear:both;"></div>https://communities.bentley.com/thread/414884?ContentTypeID=1Tue, 06 Jun 2017 17:18:09 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:fc359d9e-b8a3-41f3-99b5-384d451c06c0melissa lusk<p><a href="/cfs-file/__key/communityserver-discussions-components-files/5922/5226.profile.PNG"><img src="/resized-image/__size/940x0/__key/communityserver-discussions-components-files/5922/5226.profile.PNG" alt=" " /></a></p><div style="clear:both;"></div>