SWMMCURVES

The command SWMMCURVES creates and edits SWMM Curves

To use, call SWMMCURVES from the command line, menu, toolbar or Ribbon and choose the style you want to edit:

On this screen you can:

• New - Create a new curve
• Delete - Delete selected curves if not in use
• Edit - Edit the selected curve
• Copy - Copy and edit the selected curve
• Pick - select on the screen an item that has the curve you want to edit

When clicking the button New, you will be asked to choose the type of curve:

There are 9 types of curves in SWMM:

1. Control Curve - describes the range of value/setting values in LID Controls
2. Shape Curve - describes the variation of the values of the Width/(Total Height) ratio as a function of the Depth/(Total Height) ratio in Non-standard sections of SWMM that are regular
3. Diversion Curve - describes the variation of output flow rate values as a function of input flow rate in SWMM Flow Dividers
4. Pump Curve - describes the flow variation as a function of load/depth in SWMM Pumps
5. Discharge Curve - describes the flow variation as a function of elevation in SWMM Outlet
6. Storage Curve - describes the variation of flooded area as a function of depth in Nodes of SWMM
7. Tidal Curve - describes the variation of tidal height as a function of time of day in SWMM Outfalls
8. Spill Curve - describes the variation of the Weir coefficient as a function of load in SWMM Weirs
9. Transects - describes the Irregular cross-section of channels in SWMM

After choosing the type of curve, click the OK button and the following screen is shown:

1. Give a name to the curve in the properties frame on the left side at the top
   Note, SWMM is very sensitive with object naming. Do not use special characters. Spaces will be converted to "_" in the INP file generated by the command SWMMEXPORT and the name must be limited to 31 characters
2. In the table on the left, enter the values to create the curve. Note that you can change the column order, but the graph will be the same.
3. Depending on the type of curve, the graph will behave in one way. It may also be that the data reported in the table generate invalid curves. In this case, the Priority property will appear with the icon

See also:

• SWMMPATTERNS - to edit Time Patterns

Note: To be able to Use this command, a license is required. Otherwise, you will only be able to view the already existing curves.