Figure 1: Flow duration curves for the Yaldara gauging station data
(left) and the Penrice gauging station (right) showing the low flow
thresholds identified for the two gauging stations (red lines).
The flow rate for Lyndoch Creek was set at 0.22 ML per day as it has
similar area and rainfall as Jacob Creek. The flow rate for Duck Ponds
was set at 0.1 ML per day in line with Upper Flaxman Valley which is of
comparable size. The flow rate for Stone Chimney Creek was set at 0.05
ML per day as the flow rate established by portioning was below the zero
flow threshold established.
In general there was a good distribution of the number of days per low
flow season that the flow exceeded the threshold with a clear
distinction between the modelled no-dams scenario and the modelled
current scenario (Figure 3).