Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
I would like to delineate the polygon of a basin from an already delineated stream work. In the example, I want to extract an approximate polygon from the selected stream network in yellow without using a DEM. Any solution in ArcGIS?
If you insist on not using a DEM, you can use trace upstream from utility network analysis toolbar, and then create an convex hull of the selected network using Minimum Bounding Geometry.
But the resulting convex hull should be only an approximation of the real catchment area polygon.
Required, but never shown