| Terms related to inflow |
| (01) Watershed Inflow |
Inflow from watershed(s) assigned to the device |
| (02) Device Inflow |
Inflow from upstream devices |
| (09) Total Inflow |
Total Inflow = (01) + (02) |
| Terms related to sedimentation, infiltration, and filtration |
| (03) Infiltration |
Outflow passing through bottom/sides of device |
| (05) Filtration Removal |
Pollutant removed through filtration through media |
| (04) Exfiltration |
Exfiltration = (03) - (05) |
| (08) Sedimentation + Decay |
Pollutant removed via sedimentation and/or decay |
| (13) Total Trapped |
Total Trapped = (05) + (08) |
| Terms related to outflow |
| (06) Normal Outflow |
Outflow passing thru the primary outlet |
| (07) Spillway Outflow |
Outflow passing thru the secondary outlet |
| (10) Surface Outflow |
Surface Outflow = (06) + (07) |
| (11) Groundwater Outflow |
Groundwater Outflow = (03) - (05) = (04) |
| (12) Total Outflow |
Total Outflow = (10) + (11) |
| Terms related to mass balance and error |
| (14) Storage Increase |
Increase in storage volume (or mass) from one time step (or event) to the next |
| (15) Mass Balance Check |
Error term in mass-balance equations. Error = (12) - (09) |