QGIS SWMM Convert ESTRY Layers To SWMM: Difference between revisions

This tool converts one or more ESTRY layers into a SWMM project (inp) file. It also creates a GeoPackage representation of the SWMM input data with the same name but "with a .gpkg" extension and an inlet usage filename that can be used with TUFLOW-SWMM models. <br>

This tool is intended to make it easier to convert ESTRY models for use with SWMM. Some of the conversions may not be the optimal representation for SWMM. It is the responsibility of the modellermodeler to check the final model and ensure that it is correct. Hydraulic structures, in particular, should be reviewed. Pump operations are not converted and must be setupset up manually. Weirs have a variety of options in both platforms, and the automatic conversion may not be the most appropriate SWMM representation. No effort is made to convert TUFLOW operational structures to SWMM controls, which must be done manually.<br>

Inlets are always specified as using the "Sag" option because this is how inlets are used with ESTRY. It may be appropriate to modify SWMM inlets to use the "Grade" option. This requires the user to provide additional information such as street cross-section and longitudinal slopes.<br>

Some model parameters are defaulted during the process. For example, default street information is created. SWMM pits (inlets) require street information even though this information is not used with the inlets as converted because they are set to use the "Sag" method. Pits (inlets) use the external "inlet usage" approach where inlet usage is written to a separate layer that is included in TUFLOW using the command '<font color="blue"><tt>Read GIS SWMM INLETInlet USAGE"Usage</tt></font>'.<br>

This tool, '''Convert - ESTRY layers to SWMM''', 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>

<li>'''Reference cell size for inlet connections:''' The 1D/2D linking for SWMM is always based uponon a width, while ESTRY can specify (using a negative number) an exact number of cells to use when linking. The reference cell size is used to convert the fixed number of linked cells from ESTRY to SWMM.

<li>'''Create options, and report tables:''' Whether or not the options and report tables should be generated. This should be 'yes' for stand alonestandalone models. 'No' can be used to generate files used for scenarios where these tables are provided in a separate file.

[[File:ESTRY_to_SWMM_dialogConvert_ESTRY_Layers_to_SWMM_Dialog_a.png]]

=== Example ===