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Generate Watershed Command
Global Mapper User's Manual
The Generate Watershed command allows the user to perform a watershed analysis on loaded terrain data to
find stream paths as well as delineate the watershed areas that drain into a given stream section. The
watershed calculation uses the eight-direction pour point algorithm (D-8) to calculate the flow direction at
each location, along with a bottom-up approach for determining flow direction through flat areas and a custom
algorithm for automatically filling depressions in the terrain data.
When selected, the command displays the Watershed Generation Options dialog (pictured below) which
allows the user to set up the watershed generation process.
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