Inflows are sources of flows for the Site. Click on the individual Inflow links to the right to see specific input details.

Common Tabs

Runoff/Hydrograph

Details of the specific Inflow are entered.

Pollution

Name

The name of the pollutant, as listed on the Pollutants form

Concentration

Enter the concentration of the pollutant as it washes off the Area or Hydrograph. This is a constant rate of concentration.

Advanced

Applies only to Catchment Area, Green Roof and Roof.

Runoff Reduction (Water Quality Volume) Calculator Method (NYS Design Manual)

Percentage Impervious

The percentage of the area that can be considered impervious. Used by the Runoff Reduction Water Quality Volume Calculator Method (NYS Design Manual).

Caquot Method (Pipe Sizing)

Used in the Pipe Sizing calculations when the Caquot method is selected.

Runoff Path Length

Calculated as the longest diagonal path across the area outline (if available). User can overrule the value if required.

Catchment Slope

Calculated from the difference in level for longest diagonal path across area outline (if available and there is a surface) or defaults to 0.005%. User can overrule the value if required.

Rainwater Tank

The option to include a rainwater tank which takes flow at the source. Follow the link above for specification details.