I currently want to create links between 2 features. Ie., I have 2 basins that flow out and I want to use a line/polyline to have a link out of them and both point to a common 3rd feature, indicating that both basins have flows to the 3rd feature (area).

Is there a way I can do that or do I have to create a polyline feature class myself with the two endpoints being the location of the basin and the outflow area? If I do it this way, when I move my basin around, the polyline won't follow. Is there a way I can make a LINK between the two?

Thanks and Regards

1 Answer 1


To make it where you can move a basin and have the polyline follow, you can set up a topology between the point and line layer. The rule most relevant to you is the Endpoint Must Be Covered By rule. This rule enforces that the endpoint of a line must be covered by a point feature in another feature class.

  • Thanks for the info, is there a way where i can enforce "Endpoint must be covered by" rule to be inside a polygon instead of a point, since I want the user to be able to create lines that links the subcatchment, if I use that rule, do i have to link the line to the edge vertices of the polygon?
    – Kev84
    Commented Mar 28, 2011 at 14:32
  • Also, I followed this link forums.esri.com/Thread.asp?c=159&f=1710&t=249834 but its still pretty vague, do you have any resource that I can follow with to get a more clear head start on creating links? Thanks
    – Kev84
    Commented Mar 28, 2011 at 18:21

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