WMS:MWBM Delineate Watershed: Difference between revisions

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[[Image:WMS MWBM Define Watershed.jpg|thumb|none|left|500 px|MWBM Modeling Wizard showing the ''Delineate Watershed'' step]]
#REDIRECT [[WMS:MWBM Wizard#Delineate Watershed]]
 
The Delineate Watershed step is used to delineate a watershed.
 
== Help ==
'''Compute flow directions/accumulations using TauDEM or TOPAZ''' – Select this button to compute flow directions and accumulations on the DEM while delineating the watershed.  If the outlet is not in a flow accumulation cell, move the outlet, and run the delineate watershed command again.  If there are flow directions and accumulations already computed, unselect this button before delineating the watersheds to save computation time. Options exists to use either [http://hydrology.usu.edu/taudem/taudem5/index.html TauDEM] (Terrain Analysis Using Digital Elevation Models) or [[WMS:TOPAZ|TOPAZ]] (Topographic Parameterization Program) to calculate flows.
 
'''Stream threshold value''' – This value is used to modify the stream density.  Lower values will cause the streams to be more dense while higher values will create fewer streams in the completed model.
 
'''Apply to Display''' – Select this button to apply the stream threshold value entered to the display.
 
'''Create Tc Coverage''' – If this toggle is selected, a Time Computation coverage containing an arc with the longest flow path is created after delineating the watershed and sub-basins.
 
'''Units''' – This button is used to define the model and computation coordinates and units.  Turn on the option to create a Tc coverage and change which data is computed by selecting the ''Drain Data Compute Opts...'' button in the ''Units'' dialog.
 
 
After delineating a watershed, it is possible to [[WMS:DEM Basins|manually edit the extents of the watershed.]]
 
 
 
{{WMSMWBMModWizard}}
{{WMSMain}}
 
[[Category:MWBM Dialogs]]
[[Category:MWBM]]
[[Category:External Links]]

Latest revision as of 18:53, 22 March 2019