Watershed delineation

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12-06-2013 08:39 AM
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ScottBennett
New Contributor
Watershed delineation:   I am having trouble delineating watersheds in certain areas of my basins.  I put a point on the map to create a watershed and the proper watershed is created.  The problem is,  the tool also creates a larger false watershed adjacent to the correct area.  Does anyone have any idea why I am getting this extra false watershed information?  Any help would be greatly appreciated. 

Thanks sbennett@usgs.gov
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michaelcollins1
Occasional Contributor III
Sounds like your point is below a confluence instead of above it
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ChristineDartiguenave
Esri Contributor
You may have some bad IDs in your AdjointCatchment feature class. The delineation tool performs first a local delineation within the catchment associated to your input point and merges the resulting shape with the associated AdjointCatchment feature. Rerun the AdjointCatchment Processing tool to regenerate the AdjointCatchment feature class. This should fix your issue.

Christine Dartiguenave
Esri Water Resources Team
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