Jellyfish Compliance with SQIDEP · MCU15/0122

Australian Journal of Water Research
ISSN: 2203-9482 (Print) ISSN: 2203-9490 (Online)




Figure 4. Comparison of Rainfall Events


4.2 Comparison of Inflow Water Quality Data
Additionally, the stormwater inflow concentrations were evaluated with respect to typical values from
urban areas in SEQ and Florida as shown in Figure 5 and Figure 6. Typical inflow stormwater quality
was considered equivalent to MUSIC concentration parameter values for the Brisbane region. Two
monitoring programs undertaken by QUT in the SEQ region are also included in the comparison.
Inflow concentrations for Florida were obtained from UoF (2011).
MUSIC parameters are typically presented as mean and standard deviation of a long-term data set.
Since the requirement of this comparison was to justify the fact that measured data are within those
statistical limits, mean and 1.96 times the standard deviation is presented as positive and negative error
bars in Figures 5 and 6. It is typically considered that 1.96 times the standard deviation as positive and
negative error bars represent 95% of the data ranges of the assessed population. Means and 95% error
bars are presented for urban residential, industrial, commercial and rural residential areas for
comparison. Similar statistical measures of Florida and Ipswich water quality data are presented for
direct comparison. Original Florida and Ipswich water quality data are also presented as scattered data
sets (x axis is not relevant) in Figure 5 and Figure 6.
As evident from Figure 5 and Figure 6, stormwater quality at the monitored site is well within the
envelope of expected Brisbane water quality characteristics. Particularly, TP concentrations are within
the typical concentrations for Brisbane, though they show significant differences with the Florida data.
It is hypothesised that specific soil characteristics and landscape management practices would have
influenced phosphorus levels reported in UoF (2011) study.




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