Stream Elevation to Existing DEM ground

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02-05-2021 07:09 AM
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SteveSch
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Hello,

 

I am trying to take a stream with elevation and project that elevation out till it hits existing ground (DEM) and generate a polyline or polygon to see the impact of raising or lowering the lake level.  Using ArcMap 10.7, have 3D and Spatial Analyst.  Tried "Intersect 3D Line with Surface" and it created the same line.  Thanks for any help!

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