QGIS SWMM Junctions Downstream Junctions to Outfalls: Difference between revisions
Created page with "== Introduction == This tool converts a GeoPackage into a SWMM inp file for use with SWMM models.<br> '''Note:''' The GeoPackage input file must follow the TUFLOW-SWMM naming..." |
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== Introduction == |
== Introduction == |
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This tool converts junctions on the downstream side of a network to outfall nodes as required by SWMM. An outfall layer with the converted nodes will be created along with a modified junction layer (outfall nodes removed). The contents of these layers need to be copied into the appropriate layers in the SWMM GeoPackage.<br> |
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This tool converts a GeoPackage into a SWMM inp file for use with SWMM models.<br> |
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'''Note:''' The GeoPackage input file must follow the TUFLOW-SWMM naming conventions and fields. Thus, it is reccommended to create GeoPackages for SWMM inputs using the <u>[[QGIS SWMM GeoPackage Create | GeoPackage - Create]]</u> processing tool. |
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'''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 == |
== Usage == |
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This tool can be found in the QGIS processing toolbox panel under |
This tool, '''Junctions - Downstream junctions to outfalls''', can be found in the QGIS processing toolbox panel under TUFLOW >> SWMM. To open the Processing Toolbox panel, navigate to 'Processing' in the menubar and select 'Toolbox'.<br> |
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[[File:open_processing_toolbox.png]]<br> |
[[File:open_processing_toolbox.png]]<br> |
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=== Parameters === |
=== Parameters === |
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<ol> |
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<li>'''Input junctions:''' The existing junctions layer. |
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<li>'''GPKG Input File:''' Select the ... button to bring up a dialogue and then navigate to the location of the GeoPackage to convert. |
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<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). |
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<li>'''SWMM output filename:''' Select the ... button to bring up a dialogue and then navigate to the desired location of the SWMM inp file. |
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<li>'''Input conduits:''' The conduits layer containing the channel(s) to which the junction and outfall node(s) are connected. |
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<li>'''Modified junctions layer:''' Determines the location and filename of the modified junctions layer (outfall node(s) removed). |
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<li>'''New outfalls layer:''' Determines the location and filename of the new outfalls layer. |
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</ol> |
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[[File: |
[[File:Junctions_Downstream_Junctions_to_Outfalls_Dialog_c.png]] |
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== Example == |
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{{Video|name=Animation_write_to_SWMM_inp_001a.mp4|width=1235}} |
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{{Video|name=Animation_Junctions_Downstream_Junctions_to_Outfalls_01b.mp4|width=1236}} |
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{{Tips Navigation |
{{Tips Navigation |
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Latest revision as of 14:58, 3 May 2024
Introduction
This tool converts junctions on the downstream side of a network to outfall nodes as required by SWMM. An outfall layer with the converted nodes will be created along with a modified junction layer (outfall nodes removed). The contents of these layers need to be copied into the appropriate layers in the SWMM GeoPackage.
Note: This tool relies on the 'From Node' and 'To Node' fields to determine position in the network. The Conduits - Assign node fields processing tool will ensure the 'From Node' and 'To Node' fields are correctly assigned.
Usage
This tool, Junctions - Downstream junctions to outfalls, can be found in the QGIS processing toolbox panel under TUFLOW >> SWMM. To open the Processing Toolbox panel, navigate to 'Processing' in the menubar and select 'Toolbox'.

Parameters
- Input junctions: The existing junctions layer.
- 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).
- Input conduits: The conduits layer containing the channel(s) to which the junction and outfall node(s) are connected.
- Modified junctions layer: Determines the location and filename of the modified junctions layer (outfall node(s) removed).
- New outfalls layer: Determines the location and filename of the new outfalls layer.
Example
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