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== Introduction ==
This tool converts junctions on the downstream side of a network to outfall nodes as required by SWMM. ThisAn tooloutfall useslayer with the "Fromconverted node"nodes andwill "Tobe Node"created fieldsalong towith determinea positionmodified injunction thelayer (outfall nodes networkremoved). EnsureThe thatcontents of these fieldslayers areneed populatedto andbe upcopied tointo the appropriate layers in the SWMM dateGeoPackage.<br>
'''Note:''' It is recommended to use the <u>[[QGIS SWMM Conduits Assign Node Fields|Conduits - Assign Node Fields]]</u> tool and the <u>[[QGIS SWMM Integrity Make Node Names Unique|Integrity - Make Node Names Unique]]</u> tool to avoid errors when running the simulation.
'''Note:''' This tool relies on the 'From Node' and 'To Node' fields to determine position in the network. The <u>[[QGIS SWMM Conduits Assign Node Fields|Conduits - Assign node fields]]</u> processing tool will ensure the 'From Node' and 'To Node' fields are correctly assigned.
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== Usage ==
This tool, '''Junctions - MakeDownstream nodejunctions namesto uniqueoutfalls''', can be found in the QGIS processing toolbox panel under 'TUFLOW >> SWMM'. To open the Processing Toolbox Panelpanel, navigate to 'Processing' in the menubar and select 'Toolbox'.<br>
<br>
[[File:open_processing_toolbox.png]]<br>
=== Parameters ===
<ol>
<li>'''Input junctions:''' Use the dropdown menu to select theThe existing junctions layer that will be updated.
<li>'''Selected features only:''' If node(s) in the junctions layer have been selected using the 'Select Features' tool, this option will become available. If checked on, the tool will only check the selected node(s).
<li>'''Input conduits:''' Select the ... button and tick on the conduits layer that the junctions are snapped to.
<li>'''NewInput outfalls layerconduits:''' DeterminesThe theconduits outputlayer file.containing Detailsthe onchannel(s) to which the optionsjunction and outfall node(s) are belowconnected.
<li>'''Modified junctions layer:''' Determines the location and filename of the modified junctions layer (outfall node(s) removed).
<li>'''New outfalls layer:''' Determines the location and filename of the new outfalls layer.
</ol>
<br>
[[File:downstream_junctions_to_outfalls_dialogJunctions_Downstream_Junctions_to_Outfalls_Dialog_c.png]]
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:'''Output Options:'''<br>
:For each of the following options, the tool will output a new outfalls layer and won't override the existing one. <br>
<ol>
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{{Video|name=Animation_Junctions_Downstream_Junctions_to_Outfalls_01b.mp4|width=1236}}
[[File:downstream_junctions_to_outfalls_output_options_2.png]]
<br><br>
:<li>Create Temporary Layer:
:*Creates a temporary scratch layer. This layer will open into the QGIS workspace but it will '''not''' be saved anywhere.
:<li>Save to File...:
:*The user can navigate to a folder and save the updated outfalls layer to a new GeoPackage Database.
:<li>Save to GeoPackage...:
:*The user can navigate to an existing GeoPackage Database. Once selected, a 'Layer Name' dialog will appear. Enter the new layer name, and the updated outfalls layer will be saved as that name in the GPKG.
::[[File:Layer_Name_dialog.png]]
:<li>Save to Database Table...:
:*'''<font color=red>???</font>'''
:<li>Append to Layer...:
:*'''<font color=red>???</font>'''<br>
</ol>
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{{Video|name=.mp4|width=1235}}
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