QGIS SWMM Junctions Downstream Junctions to Outfalls

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

1. Input junctions: The existing junctions layer to be converted.
2. Selected features only: If nodes(s) in the junctions layer have been selected using the 'Select Features' tool, this option will become available. If this is checked on, the tool will only convert the node(s) that have been selected.
3. Input conduits: The conduits layer containing the channel(s) to which the junction and outfall node(s) are connected.
4. Modified junctions layer: Determines the location and filename of the modified junctions layer (outfall node(s) removed).
5. New outfalls layer: Determines the location and filename of the new outfalls layer.

Example

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