TIN Contours in a flat spot

[dkinnearBUV5J]

Hi, all.  Here's my problem, and I'm hoping someone has some insight.  I created a basin from a grading group and added/modified points for the emergency spillway.  It all looks fine except at one point.  The program is following a different tin line to draw the contour.  I tried swapping the edge, but it just made it look worse because it cut across the dam perpendicular at the left point (in the attached image) and continued a single line to the bottom point.  My elevations are all correct (the points are spot elevation labels, so I know the surface is at the correct elevation).  I tried making a breakline and adding it, but that didn't help either.  Does anyone know how to fix this or will I just have to use plines for actual printing?  Thanks!

[Mike.M.Carlson · Accepted solution]

Hello @dkinnearBUV5J-

Try to Modify the Surface point at all three locations you labeled in your image.  Meaning, select your surface and edit the surface style to have the triangle (TIN) points turned on.  Then select the surface again, and under the contextual ribbon look for Edit Surface\Modify Point.

  Pick each TIN point that follows the 1796 ft msl contour line.  At the command line it will ask you to specify an elevation, there you will type 1796.  I realize that this may seem over kill, but it usually resolves these contour interpolation issues.

I hope this helps.

[dkinnearBUV5J]

Perfect, thanks!  I was hoping it was something simple like that!