Pollutant Data Fields (SWMM)
Pollutant data can be edited on either the Pollutant Grid Window of the Subcatchments Grid or the Pollutant Property Sheet.
Most data can be edited on the grid, but some fields cannot be displayed in the grid format.
To view and edit all Pollutant data, use the Property Sheet.
The following table describes all the data fields used to define a pollutant.
Common Data Fields Fields that are common to the majority of objects can be found in the Common Fields topic.
Pollutant Data
Database Table Name: sw_pollutant
|
Field Name |
Help Text |
Database Field |
Size |
Precision |
Default |
Error Lower Limit |
Error Upper Limit |
Warning Lower Limit |
Warning Upper Limit |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Name | The name of the pollutant. | id | Text | 32 | 0 | ||||||
|
Units |
The type of unit used to quantify this pollutant. The options are: mg/l (Milligrams per liter) ug/l (Micrograms per liter) #/l (Count per liter) mg/l or ug/l are normally used for chemical constituents while #/l is used for biological ones. |
units |
Text |
8 |
|
0 |
mg/l |
|
|
|
|
| Rainfall concentration | The concentration of this pollutant in any rainfall entering the network. | rainfall_conc | Double | 3 | 0 | 0 |
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| Groundwater concentration | The concentration of this pollutant in the groundwater. | groundwater_conc | Double | 3 | 0 | 0 |
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| I&I concentration | The concentration of this pollutant in the infiltration and/or inflow (I&I) entering the network. | rdii_conc | Double | 3 | 0 | 0 |
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| DWF concentration | The concentration of this pollutant in the dry weather flow (DWF) entering the network. | dwf_conc | Double | 3 | 0 | 0 |
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| Initial concentration | The initial concentration of this pollutant in the network. | init_conc | Double | 3 | 0 | 0 |
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| Decay coefficient | The first-order decay coefficient which is to apply to this pollutant. | decay_coeff | Double | 3 | 0 | 0 | |||||
| Snow only | A check in the box indicates that this pollutant is only present in snow. Unchecked by default. | snow_build_up | Boolean | False | |||||||
| Co-pollutant |
The name of another pollutant whose concentration is added to the concentration of this pollutant. Any pollutant already defined can be selected from the dropdown list. |
co-pollutant | Text | 254 | |||||||
| Co-fraction | The fraction of the co-pollutant that is added to the concentration of this pollutant. | co-fraction | Double |
