The Horton Infiltration Max Volume Calculator allows the Maximum Infiltration Volume to be calculated for the Horton Infiltration method for use with the SWMM Runoff method.
Soil Type - The soil types are taken from the SWMM 5.2 Hydrology reference and populate the Porosity and Wilting Point values.
Porosity - The Porosity of the soil type as provided in the SWMM 5.2 Hydrology reference. Note that if a custom value is entered the Soil Type is set to "User Defined ".
Wilting Point - The Wilting Point of the soil type as provided in the SWMM 5.2 Hydrology reference. Note that if a custom value is entered the Soil Type is set to "User Defined ".
Depression Storage Depth - The storage depth of the pervious portion of the Area Inflow.
Max. Infiltration Volume - The Maximum Volume of the Infiltration as defined by (Porosity - Wilting Point) * Depression Storage Depth.