Eurobodalla Integrated Water Cycle Management Strategy

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Eurobodalla Integrated Water Cycle Management Strategy
Water quality in Wimbie Creek is poor and odour complaints have been received
from residents living near the intermittently opening lagoon, which is supplied with
flows from Wimbie Creek.
In the absence of stormwater quality data the Short Beach Creek, Surf
Beach/Denhams Beach, North Batemans Bay, Surfside and Central Batemans Bay
sub-catchments have been identified, based on land use activity, as being
predominant contributors to litter problems and sediment loads in the surrounding
waterways.
Stormwater discharges from the Maloneys Beach, Long Beach, sub-catchments
have the potential to degrade wetlands protected under SEPP14 due to erosion and
the invasion of exotic weeds.
The low lying Lilli Pilli, Reedy Creek and Hanging Rock sub-catchments have the
potential to be impacted by catchment flooding and ocean inundation possibly
resulting in public inconvenience and public safety risk.
Wimbie Creek sub-catchment has been identified as a potential first priority urban
flooding area.
The central Batemans Bay sub-catchment and the Princes Highway (in particular
the bridge across Clyde River estuary) have been identified as a possible major
hydrocarbon pollution area.
Water Infrastructure Performance Issues
At the beginning of this study it was identified that there is a general lack of a systematic
database to record operational issues and daily performance monitoring information. Whilst
a simple data management system was put together for the purposes of this study, there is
a need to expand this data management system and gain a commitment from Council to
maintain its currency and historical information. Council is currently upgrading its telemetry
system to help address this issue.
Water Supply
As Batemans Bay is part of the regional water supply scheme, the water source and supply
issues have been discussed in the regional water supply scheme section (Section 8.2) and
as part of the IWCM opportunities and options. In this section of the strategy, only the
performance and issues relating to the local service reservoir and reticulation will be
discussed along with any specific local quantity, quality and service level issues.
The current and future peak day demands are shown in Table 9-9 Current and Future Peak
Day Demands for Batemans Bay. Analysis indicates that the existing local reservoir
capacity is able to meet Council’s service level for current demands, however it is
inadequate for future demands. Council advised that under current demand conditions the
area meets Council’s service level for mains pressure and fire fighting requirements. No
assessment has been undertaken to verify whether this is the case under the future
demand scenario.