https://community.esri.com/t5/arcmap-questions/how-to-create-polyline-of-set-elevation/m-p/1069497#M2635 <P><a href="https://community.esri.com/t5/user/viewprofilepage/user-id/196223">@Tim_McGinnes</a>the contour list tool worked perfectly!&nbsp; Thanks.</P><P>&nbsp;</P> Thu, 17 Jun 2021 17:38:31 GMT BrianTickle 2021-06-17T17:38:31Z https://community.esri.com/t5/arcmap-questions/how-to-create-polyline-of-set-elevation/m-p/1069154#M2633 <P>I'm trying to create a polyline (which i can save as .kml) for a public land boundary.&nbsp; The boundary runs along a river and is defined as the 1,144.3 foot elevation level.&nbsp; Everything above that elevation is private property.&nbsp; Everything at or below is public land.&nbsp; I'm using 70cm lidar DEM that is clipped to the river corridor, only.&nbsp; I'm using ArcMap 10.7.1.&nbsp; Can anyone share a process for generating this polyline?</P> Wed, 16 Jun 2021 22:51:59 GMT https://community.esri.com/t5/arcmap-questions/how-to-create-polyline-of-set-elevation/m-p/1069154#M2633 BrianTickle 2021-06-16T22:51:59Z https://community.esri.com/t5/arcmap-questions/how-to-create-polyline-of-set-elevation/m-p/1069209#M2634 <P>If you have either the 3D Analyst or Spatial Analyst extensions it is pretty easy:</P><P><A href="https://desktop.arcgis.com/en/arcmap/10.7/extensions/3d-analyst/creating-a-single-contour-line.htm" target="_blank" rel="noopener">Creating a single contour</A>&nbsp;- this adds a single contour to the map as graphics</P><P><A href="https://desktop.arcgis.com/en/arcmap/10.7/extensions/3d-analyst/how-to-derive-contour-lines-from-a-surface.htm" target="_blank" rel="noopener">Deriving contour lines from a surface</A>&nbsp;- the tools listed here create feature classes of the contours</P><P>I would recommend the&nbsp;<A href="https://desktop.arcgis.com/en/arcmap/10.7/tools/3d-analyst-toolbox/contour-list.htm" target="_blank" rel="noopener">Contour List</A>&nbsp;tool, which allows you to specify the exact elevation values you want.</P> Thu, 17 Jun 2021 04:13:19 GMT https://community.esri.com/t5/arcmap-questions/how-to-create-polyline-of-set-elevation/m-p/1069209#M2634 Tim_McGinnes 2021-06-17T04:13:19Z https://community.esri.com/t5/arcmap-questions/how-to-create-polyline-of-set-elevation/m-p/1069497#M2635 <P><a href="https://community.esri.com/t5/user/viewprofilepage/user-id/196223">@Tim_McGinnes</a>the contour list tool worked perfectly!&nbsp; Thanks.</P><P>&nbsp;</P> Thu, 17 Jun 2021 17:38:31 GMT https://community.esri.com/t5/arcmap-questions/how-to-create-polyline-of-set-elevation/m-p/1069497#M2635 BrianTickle 2021-06-17T17:38:31Z