Mean annual flow
1 Mean annual flow
An environmental flow objective for surface water to which this plan applies is that at each node stated in column 1 of table 1 the performance indicator mentioned in subsection (2) must be at least the percentage, of the pre-development flow, that is stated in column 2 of the table opposite the node.
The performance indicator is the mean annual flow.
In this section—
mean annual flow, at a node, means the total volume of flow of water at the node in the simulation period divided by the number of years in the simulation period.
pre-development flow, for a node, means the mean annual flow at the node, during the simulation period, simulated as if—
there were no dams or other water infrastructure in the plan area; and
no water had been taken under authorisations in the plan area.
| Column 1 | Column 2 |
| Node | Percentage |
| 5 | 80 |
| 9 | 99 |
| 10 | 91 |
| 11 | 87.8 |
| 12 | 91 |
| 23 | 95 |
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