2576 - SBSMP-01 (Feb 2026)

3.3.2 MUSIC Meteorological Data

Meteorological data from Nambour Station (040282) was used for the MUSIC analysis. In
accordance with Section 3.2 of the MUSIC Modelling Guidelines, a 10-year climate period and
a 6-minute time step were selected. The model used rainfall and evapotranspiration data from
01/01/1989 to 31/12/1998, as specified in Table A1.1, Appendix A.1 of the guidelines.


Input parameters for the rainfall-runoff, source nodes and treatment devices were also
obtained from the guidelines. The following parameters were selected based on a
commercial/industrial development.

3.3.3 Rainfall-Runoff Parameters

The rainfall-runoff parameters listed in Table 3-3 below were used in the model. These
parameters are as recommended by the MUSIC Modelling Guidelines.


                      Parameter                             Commercial / Industrial
                      Rainfall Threshold (mm/day)                    1
                      Soil Storage Capacity (mm)                    18
                      Initial Storage (% of Capacity)               10
                      Field Capacity (mm)                           80
                      Infiltration Capacity Coefficient – a        243
                      Infiltration Capacity Exponent – b            0.6
                      Initial Depth (mm)                            50
                      Daily Recharge Rate (%)                        0
                      Daily Baseflow Rate (%)                       31
                      Daily Deep Seepage Rate (%)                    0
                                 Table 3-3 Recommended rainfall-runoff parameters




3.3.4 MUSIC Pollutant Export Parameters for Split Catchment Land Use

                                        TSS log10 (mg/L)           TP log10 (mg/L)      TN log10 (mg/L)
    Flow Type        Surface Type
                                        Mean      St. dev.         Mean      St. dev.   Mean     St. dev.
                    Roof                 N/A        N/A             N/A        N/A       N/A       N/A
   Base Flow        Road                 0.78      0.45            -1.11      0.48      0.14       0.20
                    Ground               0.78      0.45            -1.11      0.48      0.14       0.20
                    Roof                 1.30      0.44            -0.89      0.36      0.25       0.32
   Storm Flow       Road                 2.43      0.44            -0.30      0.36      0.25       0.32
                    Ground               1.92      0.44            -0.59      0.36      0.25       0.32
                                       Table 3-4 Pollutant export parameters




2576-SBSMP-01_Version 1.0 (February 2026)                                                        Page 9 of 23
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