Eurobodalla Integrated Water Cycle Management Strategy

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Eurobodalla Integrated Water Cycle Management Strategy
In subsequent reviews of the water sharing plans the cease to pump level may be
conservation and an 80 th percentile cease to pump level should also be evaluated.
In both the above cases, when flow is above the cease to pump level, maximum
water extracted by all users should not exceed 30% of the total flow.
All local runoff from the catchment of the Deep Creek off-river storage will be
retained in the storage.
Figure 6-17 shows the impact of the proposed 95/30 licence conditions on the secure yield
of the regional scheme.
Consumption ML
9,000
8,000
7,000
6,000
5,000
4,000
3,000
2,000
1,000
0
1980 1990 2000 2010
Year
2020 2030 2040
Historical Annual Demands
New Baseline
With Demand Management
Current Secure Yield
Secure Yield with 95/30
access
Figure 6-17 The Effect of a 95 th Percentile 30% Access Licence Condition on Secure
Yield
Figure 6-17 show that through incorporating the 95/30 supply constraints, the existing
system of source infrastructure is adequate to supply the demand for the next few years,
beyond which an increase in supply transfer rate and storage is required to supply the long
term demands.
Figure 6-18 presents the impact of the 80/30 conditions on the secure yield of the regional
scheme. This graph shows that the implementation of the 80/30 supply constraints would
significantly reduce the secure yield below the current demands necessitating an immediate
expansion to the transfer rate and storage capacity.