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I have a river dataset, which is dissolved, so between two lakes there will always be one single river line.

Now I want to find all rivers that starts in a lake, and ends in a lake. So if my rivers are stored as line features, and the lakes as polygon features, I need to find all lines whose both start point and end point touches a polygon in the lake data set.

How do I do that in either ArcGIS or QGIS (preferrably without any programming).

  • Do you consider a Spatial SQL Query as programming ? – J. Monticolo 20 hours ago
  • Find as in "select & extract", or find as in "add an attribute"? – Erik 20 hours ago
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Use the select by location features in ESRI ArcGIS. Select by location has an optioin called Contain. With Contain your line must be completely contained by the polygon but they can share geometries at the border.

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