2021-22
NSW Government Floodplain Management Grants:
Tweed
Shire Council
Tweed
Heads south levee overtopping and drainage study
This
project will provide a local flood risk management study for the
South Tweed business district and residential area. The study will
examine flooding, drainage and the hydraulic characteristics of the
local levee and drainage systems, in order to identify potential
flood risk mitigation and improvement measures. It will also include
analysis of future flooding risks such as sea level rise and climate
change. The findings of the study will inform development controls in
the region and provide a local floodplain risk management strategy,
including measures to be implemented within the area to reduce the
impacts of flooding.
Raising
and Extension of Tweed Heads South Levee is
expected to cost $27 million over a 30 year period.
Byron
Shire Council
Debris
control measures for Federation Bridge
Federation
Bridge is the major bridge in Mullumbimby crossing the Brunswick
River. Federation Bridge's pile design makes the structure vulnerable
to the collection of debris, which causes a major blockage to
floodway flow in the Brunswick River at Mullumbimby. This was a
contributing factor to the increase in flood levels within
Mullumbimby during the 2017 flood event. This project will undertake
the investigation, design and construction of bridge control measures
to reduce the potential of river blockage at Federation Bridge.
2020-21
NSW Government Joint Grants through the Floodplain Management Grants
and Floodplain Grants Scheme, which is funded by Resilience NSW:
Lismore
City Council
Review
and update Lismore flood risk management plan
Lismore
experienced a major flood event in March 2017, which peaked at 11.59m
Australian height datum (Lismore Rowing Club gauge) and saw the
central business district levee overtopped for the first time since
it was completed in 2005. Rous County Council recently prepared a
flood risk management study following the 2017 event. This project
will update Lismore's flood risk management plan, based on the
findings of the flood risk management study.
Richmond
Valley Council
Update
the Richmond River flood study
This
project will produce a single consistent flood model for the Richmond
Valley local government area from Casino to Broadwater. This involves
rebuilding the Richmond River flood model (2010) for use in modern
flood model software, inclusion of calibrated modelling for the
Casino township, and the merging of the Evans River flood study
(2014) and the Pacific Highway Woolgoolga to Ballina road upgrade
flood modelling. This will result in the elimination of disparity
between the Richmond River and Casino models where they interface and
overlap.
2019-20
NSW Government Joint Grants through the Floodplain Management Grants
and Floodplain Grants Scheme, which is funded by the NSW Office of
Emergency Management:
Clarence
Valley Council
Alice
Street levee rehabilitation – investigation and design
A
section of the levee between Queen and Alice Street has been
identified as being at risk due to scouring and undercutting,
potentially causing slips that will risk the stability of the levee.
This project will carry out a geotechnical assessment on the
stability of the flood levee and riverbank and recommend options to
improve riverbank stability in this area.
Wooli
flood study and management plan – review and update
This
project will update the 1999 Wooli floodplain risk management plan to
incorporate recent flood events and best practice modelling to
predict flood levels. The updated flood study and plan for Wooli will
allow for informed decisions on managing flood risk.
Tweed
Shire Council
Detailed
design of Murwillumbah central business district levee spillway
During
the March 2017 flood, the earthen section of the Murwillumbah central
business district levee was overtopped in a few localised low points.
The overtopping occurred in an unexpected location and in an
uncontrolled nature. The Murwillumbah central business district levee
and drainage study recommended the remediation of the levee low
points and installation of a formalised spillway to achieve safe and
controlled overtopping of the levee during events equal to or greater
than the levee crest. This project will complete a detailed design
for a spillway and levee rehabilitation.
Update
and expansion of the Tweed Valley flood study
The
current Tweed Valley flood study was completed in 2009 and covered
only the more populated areas of the Tweed. Historical records and
anecdotal evidence suggest that there are many more properties in the
Tweed Shire's rural areas and villages that are exposed to flooding.
This project proposes to expand the Tweed Valley flood study into the
upper catchment to cover the villages of Chillingham, Tyalgum,
Kunghur, Uki, Stokers Siding, Bilambil and the rural areas in
between. Flood intelligence in these areas will allow Council to
identify high-risk areas/properties.
Kyogle
Council
Bonalbo
flood study
Council
will undertake a flood study to improve their understanding of flood
behaviour and impacts, and to make better informed management
decisions in relation to flood risk in Bonalbo. This study will also
provide a sound technical basis for any further flood risk management
investigations in the area.
2018-19
NSW Government Joint Grants through the Floodplain Management Grants
and Floodplain Grants Scheme, which is jointly funded by the NSW
Office of Emergency Management and the Australian Government:
Clarence
Valley Council
Bluff
Bridge (Orara River) flood monitoring
This
project will install a remotely monitored flood gauge in the Orara
River at Bluff Bridge to enable residents to be aware of when the
road is closed. Flooding of the Orara River has caused the Orara Way
to close on many occasions at this location. The closure causes
isolation and inconvenience to the community of Glenreagh and
surrounds as well as through traffic between Grafton and Coffs
Harbour.
The
Bluff Bridge Flood Monitoring System was switched on in
August-September 2020.
Lower
Clarence rural floodplain risk management study and plan
This
project will prepare a rural floodplain risk management study and
plan. In 2014, a report on the management of flood mitigation assets
identified that the Council may be maintaining floodplain works that
have little or no flood mitigation benefit or that perpetuate
environmental harm. The report concluded that the best option was to
prepare a new floodplain risk management plans for the rural
floodplain.
Tweed
Shire Council
Coastal
Creeks flash flood warning system
Burringbar,
Mooball and Crabbes creeks are subjected to flash flooding with
little or no warning. This project will undertake modelling to
establish the gauge triggers necessary for the flash flood warning
system to be effective. Once triggers are determined the warning
system will be investigated and implemented. Extensive community
engagement is proposed to ensure residents are aware of the action
they should take.
Community
flood markers
This
project involves the fabrication and installation of flood markers
and signage to record the level of the March 2017 flood event in
various impacted suburbs. This includes updating previous signage
commemorating the 1954 flood, as well as additional markers on street
poles. The signage project will be complemented by consultation
activities and media to raise flood awareness in these communities.
2017-18
NSW Government Joint Grants through the Floodplain Management Grants
and Floodplain Grants Scheme, which is jointly funded by the NSW
Office of Emergency Management and the Australian Government:
Clarence
Valley Council
Clarence
Valley floor level surveys
There
is a lack of knowledge regarding floor heights of buildings located
within the Clarence Valley floodplain. This project will undertake
floor height surveys of these buildings. This information will be
used in conjunction with the lower Clarence flood model for a variety
of floodplain management purposes, including refining the evacuation
strategies; assisting with the cost/benefit assessments for potential
levee augmentations to improve flood immunity; and identify
properties that would be eligible for potential future house raising
assistance.
Tweed
Shire Council
Enhance
Burringbar/Mooball/Crabbes Creek gauge network
There
are currently 2 rain gauges in the Burringbar and upper Crabbes Creek
catchments. This project will install 2 additional rain gauges
upstream of Burringbar to improve flood warning in the area.
Incorporate
Tumbulgum gauge into flood warning system
The
automatic stream gauge at Tumbulgum is not currently included in the
Bureau of Meteorology's formal flood warning network. This project
will incorporate the gauge at Tumbulgum into the Bureau of
Meteorology flood warning network. This will improve predictions of
flood height in the mid catchment, by including influences from the
tide and Rous River, and will improve flood warnings and real-time
evacuation planning.
South
Murwillumbah – Condong flow path/levee performance study
This
project will deliver a flood study for the south Murwillumbah
business district and residential area. The study will examine
flooding and the hydraulic characteristics of south Murwillumbah
Condong floodway, including the effectiveness of the current levee
system. The findings of the study will inform development controls in
the region and provide a floodplain risk strategy, including
potential property modification measures such as land acquisition and
structural works to maintain or improve the efficiency of the
floodway.
2016-17
NSW Government Joint Grants through the Floodplain Management Program
and Floodplain Grants Scheme, which is jointly funded by the NSW
Office of Emergency Management and the Australian Government.
Ballina
Shire Council
Ballina
Island and West Ballina Flood Protection Feasibility Study and Plan
This
project will develop a strategy to protect the existing urban
footprint of Ballina Island and West Ballina below the one percent
annual exceedance probability flood level from mainstream, storm
surge and local overland flooding that can be adapted for future sea
level rise. The strategy will be used to implement development
controls, identify feasible infrastructure upgrades and structural
protection measures available to reduce the impacts of flooding to
Ballina Island and West Ballina.
Byron
Shire Council
North
Byron Flood Risk Management Study and Plan
There
is considerable development pressure in the North Byron catchment and
Council is currently preparing a future residential development
strategy. This project will develop a risk management study and plan
for the area to ensure that the existing and future development will
be managed in accordance with flood hazards.
Kyogle
Council
Tabulam
Village floodplain risk management study and plan
The
village of Tabulam is flood prone and major flooding has impacted on
the village and its residents in the past. Development of the Tabulam
floodplain risk management study and plan will assist in identifying
the way to manage the risk of flooding impacts within the village
area. This will provide guidance for the control measures required
for the existing developed area and identify risks involved in new
development. Beneficial control measures will be identified and
implemented.
Rous
County Council
Tuckean
floodgate management plan review
The
Tuckean floodgate management plan review will address the functional
effectiveness and sustainability of Council's infrastructure on the
Northern Rivers of NSW. This project will inform and update the
Richmond Catchment flood model by providing a refinement of scale to
allow feeder canals, drains and tidal variation inclusion. This
approach will allow greater understanding of the hydrological
function of the Tuckean floodgate, which is known as an acid hotspot.
This will also allow Council to revise floodgate management plans in
the area and support the community's desire for improved water
quality in the Richmond River.
Tweed
Shire Council
South
Murwillumbah voluntary purchase scheme
A
voluntary purchase scheme is in place for high hazard flood affected
homes along the Tweed River frontage of River Street, South
Murwillumbah. The existing earthen levee provides limited low level
protection from small flood events. Properties have been purchased in
the region over the past twenty years. Only a few eligible properties
remain, and it is difficult to predict when these will be purchased,
given the voluntary nature of the program and the owner's willingness
to sell their property. Once removed, the properties will become
public open space to be enjoyed by the wider Tweed community.
2015-16
NSW Government Joint Grants through the Floodplain Management Program
and Floodplain Risk Management Grants Scheme, which was jointly
funded by the NSW Office of Emergency Management and the Australian
Government.
Richmond
River County Council
Richmond
Catchment Flood Model compilation and Australian height datum
adjustment
This
project is designed to refine the existing Richmond River catchment
flood models and aims to link all existing flood models into a
catchment model to provide continuity across the catchment.
Tweed
Shire Council
South
Murwillumbah Voluntary Purchase Scheme
A
voluntary purchase scheme is in place for high hazard flood affected
homes along the Tweed River frontage of River Street South
Murwillumbah. This project will provide funding for the purchase of
the few eligible properties that remain if the opportunity arises to
purchase the property.
2014-15
NSW Government Joint
Grants through the Floodplain
Management Program and Floodplain Risk Management Grants Scheme,
which was jointly funded by the NSW Office of Emergency Management
and the Australian Government.
Kyogle
Council
Kyogle
– flood modification measures: construction activities
This
project involves construction activities associated with the
structural flood modification measures identified in Council's
Floodplain Risk Management Plan, including a partial ring levee and
additional Fawcetts Creek flood breakout.
Richmond
River County Council
Water
Quality Monitoring – Richmond River Catchment
This
project will undertake water quality monitoring. The water quality
monitoring is linked to the flood mitigation systems as it triggers
the opening and closure thresholds (water level and pH) of the
floodgate.
Richmond
Valley flood warning and evacuation planning system - rural home
floor
This
project will collect ground and floor level data that can be used in
flood warning and evacuation systems and detail homes that are a
priority for house raising or evacuation.
Lismore
rural evacuation – house floor level plan
This
project will survey the floor levels of houses in the most impacted
areas. The information will inform potential purchasers of the risks
associated with individual houses in the rural area and at the same
time give emergency response agencies good information on where
resources should be deployed in a flood.
Flood
evacuation South Lismore
This
project will examine the option for constructing a new high level
escape route to high ground for South Lismore.
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