Results
Zero flow threshold
The assessment supported the use of a threshold of 0.04 ML/day as the
zero flow threshold with a Pearson correlation coefficient of 0.64
(Table 2). Thresholds of 0.03, 0.04 and 0.05 ML/day all showed good
overlap with observed flow data so the higher correlation score was used
to identify the best value. A higher correlation was not expected from
this data due to the accuracies associated with Source Modelling and the
issues with limiting the data at 365 days.
Table 2: Pearson correlation coefficient results for the different flow
thresholds used when compared back to the observed flow data for the
number of flowing days.