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The infiltration system properties dialogue box contains the parameters that describe the basic physical characteristics of the infiltration system. A description of each of the parameters is given below.

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A conceptual diagram of the infiltration system properties in MUSIC is presented below:

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A reporting window will then be presented showing the water balances for various inflows and outflows at the infiltration systems as shown below.

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It is possible to view or save various flows and water quality as below for the infiltration system:

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The advanced properties section (opened using the Advanced Tab under Infiltration System) displays the parameters that describe the hydraulic characteristics for the overflow weir, and the parameters that describe the treatment process in the infiltration system.

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The overflow weir carries a discharge when the water level in the infiltration system pond exceeds the Extended Detention Depth. The overflow weir is modelled as a sharp broad crested weir whose discharge equation is given by:

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MUSIC models the influence of infiltration through the sides of the system. This is important, since a number of studies have shown that this can represent a very high proportion of the total infiltration of the system. MUSIC has been calibrated for a number of infiltration systems, both in the field and using detailed laboratory studies, to derive a default Horizontal Flow Coefficient of 3.0 (ie. the lateral infiltration rate being effectively three times the rate of vertical infiltration through the base). You should only modify this value where they have appropriate data to calibrate it; these data should preferably be based on published, peer reviewed studies.