[Qgis-user] Watershed - Catchment area upstream of a point

[Brent Wood]

Hi Tony,

Just wondering....

If QGIS is using SAGA to do the work, have you considered installing SAGA & using it directly?

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529
________________________________
From: Qgis-user <qgis-user-bounces at lists.osgeo.org> on behalf of Tony Shepherd (FarmMaps NZ) via Qgis-user <qgis-user at lists.osgeo.org>
Sent: Wednesday, November 9, 2022 11:04
To: 'Qgis Users List' <qgis-user at lists.osgeo.org>
Subject: [Qgis-user] Watershed - Catchment area upstream of a point


Hi All



I’m wanting to use a DEM/DTM to automatically map the watershed/catchment area upstream of a known point.



After a bit of reading, this appears to be a not-so-simple task but suggestions are to use the “Upslope Area” algorithm.



In my case, the program fails to finish running, and the message window shows the following error:

             SAGA Version: 7.8.2 (64 bit)
             Error: tool needs graphical user interface [Upslope Area]

             C:\Users\Tony\Documents>exit



Questions:

  *   Does anybody know what that error means?
  *   Is there another tool/method that is preferable to use?



Cheers

Tony



Tony Shepherd  |  GeoSpatial / Mapping Manager



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Brent Wood
Principal Technician - GIS and Spatial Data Management
Programme Leader - Environmental Information Delivery
+64-4-386-0529

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