Eurobodalla Integrated Water Cycle Management Strategy
Eurobodalla Integrated Water Cycle Management Strategy
Eurobodalla Integrated Water Cycle Management Strategy
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<strong>Eurobodalla</strong> <strong>Integrated</strong> <strong>Water</strong> <strong>Cycle</strong> <strong>Management</strong> <strong>Strategy</strong><br />
Dual reticulation uptake and associated community costs<br />
Sustainability of Environmental Flow<br />
The water quality and dilution requirements for environmental flow substitution have not yet<br />
been established for the Moruya River System. Further the substitution regime has not<br />
been agreed by the Government Authorities and community. The outcome of these<br />
negotiation and studies may or may not support the concept of environmental flow<br />
substitution of reclaimed water. Conflict may also arise between different uses for the<br />
reclaimed water (environmental flow substitution vs agricultural reuse) in periods of low<br />
river flow. If environmental flow substitution of reclaimed water was not supported then<br />
there will be a need to build the Southern dam within the 30 year timeframe. This will make<br />
scenario 7 significantly more expensive than the other integrated scenarios altering the TBL<br />
ranking of the scenarios in Table 10-2 and scenario 5 is the preferred option.<br />
Future <strong>Water</strong> Demands and Dual Reticulation Uptake Levels<br />
Figure 10-2 to Figure 10-8 illustrate how the demands will be met by different elements for<br />
each integrated scenario. The cost implications for scenario 7 not meeting the demands<br />
predicted by each component and the demand reduction program are greater than the<br />
other options. This may arise for example though customer choices uptake of reclaimed<br />
water and rainwater tanks. If there is a gap between what can be supplied from each<br />
component and what the community requires, a dam will need to be built within the 30<br />
years timeframe, making scenario 7 more expensive which will alter the preferred scenario<br />
ranking.<br />
Recommendation<br />
<strong>Integrated</strong> Scenario 7 carries greater risks than the other options. DPWS recommends that<br />
Council consider the adoption of <strong>Integrated</strong> Scenario 5. As recommended elsewhere in this<br />
report, the IWCM strategy should be reviewed in 5 years. The uncertainties associated with<br />
<strong>Integrated</strong> Scenario 7 may have been resolved by this time.<br />
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