Catchment Tool, an ArcGIS Python toolbox, was developed for delineating stream network catchment areas.
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Catchment Tool

The Catchment Tool is an ArcGIS Python toolbox which currently includes one tool: Delineate Catchments. This tool was developed by South Fork Research, Inc. to automate the process of delineating catchment area polygons for each stream reach or segment within a stream network.

Futher documentation and help files are available at


The Catchment Tool toolbox is under development for South Fork Research, Inc. by Jesse Langdon.


Licensed under the GNU General Public License Version 3.