No sign of a break in widespread rain across NSW and road damage toll mounts

 

The Sydney Morning Herald, 20 October 2022:

Holidaymakers heading into regional NSW over the next few months have been told to brace themselves for longer journeys on more dangerous roads after a year of record rain and flooding.

The severe weather has caused billions of dollars in damage to local roads across the state, bringing regional councils to “their knees” as they struggle with repairs, and heaping pressure on the state government to intervene…..

NRMA spokesman Peter Khoury said the damage to roads across the state posed a safety risk heading into the summer and councils needed more state and federal funding to ensure their roads were safe after the rain.

“The roads are not great, they are littered with potholes and are severely damaged, but also roadworks will be taking place, which means people will need to slow down for those as well,” he said.

“There are safety risks when it comes to roads that are so badly damaged. It is easier to lose control, especially on high-speed roads.

“It’s going to be a challenging period and it’s not going to get better until the rain stops.”

The NRMA roadside assistance team was receiving almost twice as many call-outs for tyre and wheel damage in NSW compared with last year.

NSW Farmers fears the state of regional roads will impede the harvest of this year’s winter crops, due to start in NSW in the next few weeks, because heavy vehicles and machinery will struggle to get to farms and then get the crops to market…...

Local Government NSW said some councils were now spending up to 90 per cent of their capital works budgets on road repairs and this year’s rain had caused $2.5-$3 billion worth of damage to local roads.

It reiterated its call for the state government to act on its 2019 election promise and take over 15,000 kilometres of country roads owned and repaired by councils.

A spokesman said the government’s failure to do so had “heaped more pain on many regional and rural councils, who are financially on their knees due to rising repair costs”.

Almost 80 councils have identified 500 roads they want the state government to reclassify or take over. So far, the government has said it will take on five roads – totalling 391 kilometres – identified in a priority audit, but the transfer of ownership will take time. An independent panel is reviewing the remaining nominations……

The Bureau of Meteorology (BOM) expects this current bout of rain to continue falling over the Northern Rivers region at least until Thursday 27 October.

BOM advice as of 19 October 2022 was:

Significant rain and thunderstorms are continuing to spread across eastern and south-eastern Australia and will continue into next week.

Rain and thunderstorms with heavy falls over South Australia and Queensland are due to spread into northern and western New South Wales towards the South Australian and New South Wales border on Wednesday night.

Severe thunderstorms are also likely across Queensland and northern New South Wales, with heavy rainfall leading to flash flooding, damaging winds and large hail. Heavy falls across inland South Australia could also lead to flash flooding.

Thursday will see widespread thunderstorms across eastern Queensland, New South Wales, northern Victoria, and far eastern parts of South Australia, with isolated heavy falls.

Inland Queensland and New South Wales are also likely to see some severe thunderstorms with heavy rain, damaging winds and large hail, with giant hail also possible.

Further rainfall in coming days for southern inland Queensland, on and west of the ranges in New South Wales and northern Victoria is likely to lead to widespread moderate to major flooding impacting already flood affected communities.

On Friday and leading into Saturday widespread showers and thunderstorms will continue for eastern Queensland, New South Wales, Victoria and Tasmania, as humid and unstable conditions persist across eastern and south-eastern Australia.

Severe thunderstorms are likely across eastern Queensland, New South Wales, and parts of Victoria, bringing more large hail, damaging winds, and heavy rainfall.

Severe thunderstorms are likely across eastern Queensland, New South Wales, and parts of Victoria, bringing more large hail, damaging winds, and heavy rainfall.

Widespread rainfall totals of 25 to 50 mm are likely across South Australia, Queensland, New South Wales, and Victoria this week and into the weekend, with 50 to 100 mm falls possible in southern inland Queensland, on and west of the ranges in New South Wales.

This rain and storm activity will lead to renewed river level rises and widespread moderate to major flooding across southern Queensland, inland New South Wales, and possibly northern Victoria…...

For all the latest warnings see National Warnings Summary.

8-DAY TOTAL RAIN FORECAST

Australian Bureau of Meteorology, rain map, issued 7:43am AED Thursday 20 October 2022

Valley Watch Inc takes Clarence Valley Council to the NSW Civil and Administrative Tribunal seeking an honest answer as to the exact number of Yamba dwellings identified as having floor levels below modelled flood inundation heights

 

Over my lifetime I have lived in eight local government areas.

During my childhood years only one impinged on my consciousness, when community resistance to a proposed council measure saw parents & children armed with buckets of paste, large paintbrushes and posters, out after dark on the back of a truck deployed to festoon telegraph poles & public buildings with sentiments opposing the proposition.

It was also the first time I began to realise that local government was a point at which competing interests vied to be heard and an arena it which every interest hoped to prevail.

 

It was brought home to me when returning from attending a council meeting, a neighbour entered my family home exultantly crying “The mick’s have it! We won!”.

It was during those early years that I also began to learn that both state government and local council decisions about where to create new urban precincts can have unexpected consequences for families purchasing a home. In my case the lesson came with fast moving flash flooding, which sent water rushing under dwellings in a largescale housing project built on sloping former farmland land at the fringes of a city. Carving away clay and soil from foundations and making timber houses quiver like jellies on their newly exposed, vulnerable brick piers.

Over the years since then I have watched local government grow more complex and in many ways more powerful. With its elected arm frequently highly politicised and its administrative arm intent on imposing its own will on council decision making as its default position in relation to planning matters.

I have lived long enough to see more and more cities, suburbs, towns and villages expand their built footprints until they began to fill New South Wales coastal floodplains and, in the last three decades noted that this particular planning strategy has been repeatedly warned against.

I have also watched with both interest and sometimes alarm as vested interests have grown even more powerful when it came to deciding if, where and when areas on those floodplains should be turned into mile after mile of family homes just as vulnerable to the forces of nature as was that family home of my childhood. Still being built as mine was to designs and with materials which were never fully capable of withstanding severe storms, floods, wildfire or earthquake.

Right now the little town of Yamba (at the mouth of one such floodplain) is the focal point of one of those contests between residents seeking to protect the wellbeing and safety of a community and the political interests of three tiers of government aligned as they currently are within this state with the financial and commercial interests of property developers and land speculators both foreign and domestic.

Part of that contest is being played out in the matter of Valley Watch Inc v Clarence Valley Council, Case No. 2022/00290453, before the NSW Civil & Administrative Tribunal (Administrative and Equal Opportunity Division) in Sydney on Monday 17 October 2022 at a Case Conference (GIPA and Privacy) at which the progression of the matter through the Tribunal process will be decided.

Note: Full title of GIPA is the Government Information (Public Access) Act 2009 which in NSW is the vehicle under which a legally enforceable right to access most government information is exercised unless there is an overriding public interest against disclosure.

Clarence Valley Independent, 12 October 2022:

Valley Watch takes council to NSW Civil and Administrative Tribunal

Eight years of frustration by local community group Valley Watch over Clarence Valley Council not releasing important Yamba floor level survey results will now be subjected to a review by the NSW Civil and Administrative Tribunal.

Valley Watch spokes-person Helen Tyas Tunggal said 14 years after Yamba’s existing flooding problem was identified in council’s 2008 flood study, and eight years since professional floor level surveys were done in 2014, affected residents are still unable to access the results.

“Enough is enough” Ms Tyas Tunggal said.

“14 years is too long.

“The council has an obligation to act in the best interests of residents and stop keeping this information secret.”

The 2008 Yamba Floodplain Risk Management Study FRMS identified the issue of a lack of a floor level survey, but Ms Tyas Tunggal said it took another six years to be conducted.

“Due to a lack of surveyed floor level data an assessment based on approximations,” the FRMS stated.

The approximations, Ms Tyas Tunggal said were made of the number of existing house floors that would be inundated including a 20-year flood (122 homes); a 100-year flood (1223 homes) and extreme flood (2144 homes).

“It took until 2014 for the floor level survey to be conducted,”’ Ms Tyas Tunggal said.

“(The residents were notified) as a part of the investigation work for the preparation of the Development Control Plan that will guide residential development in West Yamba, it is a requirement that floor levels of surrounding residential dwellings be ascertained,” affected residents were told by council.

“These floor levels are required to determine whether any existing dwellings are at risk from the proposed future filling of appropriately zoned parts of West Yamba to enable future residential development.”

“And yet those residents whose floors were surveyed have not been told by the Council what the results are,” Ms Tyas Tunggal said.

Valley Watch has made various attempts to clarify what has happened to the resulting documentation from the 2014 floor level survey.

As a result, the organisation has asked its solicitor to seek a review of Council’s refusal to release the information.

“We think it is only fair for residents to be told how at risk of flooding their homes are,” Ms Tyas Tunggal said.

“Council has that information and could make the information available if they wish.”

When council replied to Valley Watch’s request for information the written response stated “Premature release of the floor level data might (for instance) result in one or more sales falling through without the statutory immunity of Council being assured.”

“We do not accept that by releasing floor level survey data council will lose its statutory Immunity,” Ms Tyas Tunggal said.

“The statement however raises concerns that there is significant information contained within the survey results that residents and the public need to know.

“We are asking the NSW Civil and Administrative Tribunal to take an independent look.”

A particular quote in the aforementioned article is revealing to say the least: 

“Premature release of the floor level data might (for instance) result in one or more sales falling through without the statutory immunity of Council being assured.”

One has to wonder why Clarence Valley Council would expose itself so blatantly, in asserting words to the effect that it believes it is perfectly proper for council to keep the full range of flood risk information from existing homeowners, as well as to actively involve itself in duping prospective homebuyers and presumably conveyancing agents acting on the buyer's behalf.

Such a coldly cruel expression of caveat emptor by an imperious Clarence Valley Council. 

It was interesting to note that the article set out below also appeared in that same issue of the Clarence Valley Independent. A well-intentioned article which voices the ideal while skirting around much of the problematic reality that is local government in 21 Century Australia.

Clarence Valley Independent, 12 October 2022:

Mayoral column 3 – Community engagement and consultation

October 12, 2022 -

In late 2021, during the Council election campaign, some candidates acknowledged that the Council should do much better in informing the community on matters of importance.

I believe that a local Council that consistently engages effectively with its community is helping to safeguard local democracy while placing people at the centre of local government. Perfunctory, irregular “consultation” should be unacceptable.

Councillors have received complaints of a lack of communication and response times to your communications. We are committed to continuous improvement in this regard. If you have experienced communication issues, I encourage you to contact me or your local councillor.

The level of community engagement undertaken should always be appropriate to the nature, complexity and impact of the issue, plan, project, or strategy. Adequate time and reasonable opportunity should be provided for people to present their views to Council in an appropriate manner and format. The Council should have proper regard to the reasonable expectations of the community, to the costs and benefits of the engagement process, and to intergenerational equity.

"Don't Drown Our Town" banners appearing on Yamba streets as the town waits to see how long and strong this third La Niña will be

Stop The Fill banner in front of retaining wall holding back landfill on a subdivision site in Carrs Drive, Yamba....

IMAGE: NBN News, 18 September 2022

Examples of STOP THE FILL: Don't Down Our Town corflutes out the front of homes on Yamba Rd, The Halyard & Golding Street....

Photographs supplied.

On the northern side of the Clarence River estuary, the little coastal village of Iluka is battling poor urban planning and an inadequate drainage network in a changing regional climate

Clarence Environment Centre, Winter newsletter – 2022, excerpt:

Who could have predicted that?

They have to be kidding!

The overworked phrase, “who could have seen this coming”, has been used by all levels of government to excuse the debacle which was the response to the recent flooding event across the Northern Rivers, and has been rightly ridiculed.

For 40 years, the world’s scientific community, through the UN, has been warning us that the changing climate will generate more frequent and more extreme weather events, and have begged the world’s governments to take appropriate action, with little success.

The failure of those governments to make meaningful attempts to reduce greenhouse gas emissions is inexcusable. However, to fail to plan for those forecast catastrophic weather events, verges on criminal neglect. The recent flooding saw lives and property lost, businesses forced to close, and rendered thousands homeless.

In the Clarence Valley, the response to 4 decades of warnings about the inevitability of increased flooding. has been zero, something that even this latest disaster seems unlikely to change.

In fact, Council’s first act when reviewing the cause of ponding in some areas in Iluka, was to examine past rainfall data, leading to the hardly surprising conclusion that: “The significant rainfall has led to a saturated catchment and high-water table, exacerbating the time taken for water to disperse”.

Council’s statement continues with: “There has been no event or combination of events since records began that comes close to the rainfall totals recorded at Yamba”, going on to say: “We need to be aware that the most efficiently designed drainage systems are not built to cope with rainfall totals equal to that recently experienced”.

Ponding problems in Iluka from recent rains will only worsen with the clearing of forested land and replacing it with roof-tops, concrete and bitumen

Having had over 40 years to plan for just such an event, we have to ask, why haven’t adequate drainage systems been designed, and required to be installed in all new developments?

Alongside one of Iluka’s ponding problem areas, a 140-lot subdivision is currently converting 14ha of bushland into roofs, concrete and bitumen, all combining to channel rainfall, at speed, through an inadequate stormwater system, directly into those ponding hotspots.

The above image was of the condition of that housing development after the water had subsided. Laughingly advertised as “Birrigan Iluka Beach”, despite being nowhere near the waterfront, it has already changed water flows beginning with the removal of the forest which has led to the unprecedented ponding, prompting this Facebook comment (see right). 

Council should be taking its “Climate Emergency” declaration seriously, and plan accordingly, but they aren’t, with multiple floodplain developments underway or in the planning stages in Iluka and Yamba.

Interesting time ahead!

If the NSW Government and emergency services tell Yamba it rarely floods and its houses are safe from all but extreme flooding, are the town's residents supposed to believe them?

 

Below is a fairly typical description of Yamba and environs during high rainfall and flooding events.

Even though it appears text and images have been produced between 2015-2021 it seems to be considered by the NSW Government as a contemporary description rather than an historical one.

Read it carefully if you live in Yamba or have been a holidaymaker in the town when the Lower Clarence River has been in flood in recent years.

NSW State Emergency Services (SES), Flood Awareness NSW, retrieved 13 September 2022:

CLARENCE RIVER

Clarence Valley LGA

Yamba and Palmers Island – Are you at risk?

Yes you are!

Yamba is located on the southern bank of the mouth of the Clarence River. The main impact of floods in the area is isolation, however several residents and commercial properties can be inundated in severe floods. Even in minor floods, Yamba may become isolated when Yamba Road closes. Another consideration during local floods is the influx of tourists during holidays and summer season, who may be unaware of the local effects of flooding.

Palmers Islands is located directly west of Yamba on the southern bank of the Clarence River. Most of the land on the island is prone to flooding. In a minor flood, Palmers Island becomes isolated and surrounded by flood water. In a major flood some properties may experience over-floor flooding and some residents may need to evacuate.

Rural land along the Clarence River around Wooloweyah Lagoon can also be inundated and substantial numbers of rural properties can become isolated.

The period of isolation for these areas can vary depending on the size and duration of the flood, as well as high tides preventing drainage to the sea. Any residents wanting to leave the area would need to do so before flooding causes Yamba Road to close.

Palmers Island Yamba Road Store and School Flooding 

Do those five short paragraphs and that one image match your experience of floodwater and stormwater inundation in Yamba over the last 30 years?

Is it still mostly the inconvenience of isolation that the Yamba community suffers? Is it an accurate description to say that only “several residents and commercial properties can be inundated in severe floods”?

Is anyone else in Yamba asking themselves why that first paragraph quoted here is still accepted uncritically by state authorities, when the lived experience is that the inundation situation has been gradually becoming more pronounced over decades. That the amount of water entering town commercial and residential precincts is long past just nuisance value.

The natural flood storage areas and flood ways within the town, which carry water overland to the river estuary and out to sea, no longer function. In large measure due to the degree of draining, infilling and building over of these these features which has occurred over time and the fact that: (i) the town’s stormwater system can no longer adequately cope with the amount of rain falling from the sky and subsequent rainwater runoff from sloping ground/hard surfaces; and (ii) the river water arriving as flood carried down from higher up the river system whose swirl through town streets is often exacerbated by a tidal pull.

There are residents whose homes have been inundated at floor level in both 2021 and 2022 and residential lots which experienced stormwater/floodwater intrusion onto the property for the first time or at a deeper level that previous flood periods according to homeowners.

A better description of the changing Yamba experience of flooding can be found in an Inside Local Government article of 26 May 2022:

Clarence Valley Mayor, Ian Tiley, has demanded the Clarence be included in any 2022 flood studies and assessments, saying the region had been ignored in initial assessments by the NSW Department of Planning and Environment.

Mayor Tiley put forward a Minute at the June Council meeting following advice from the Department of Planning and Environment that post flood data behaviour assessments already undertaken had focused on the Richmond, Wilson, Brunswick and Tweed rivers – local government areas to the north of the Clarence Valley.

“The flood level at Grafton was not a predictor for the flood behaviour downstream,” the Mayor said.

“It is clear the Clarence flood increased in volume as it moved downstream and staff consider it likely the extreme localised rainfall events in the tributaries of the lower catchment impacted Clarence River levels downstream of Grafton, and that post flood data behaviour assessments may inform these assumptions.”

CVC previously reported in April that Yamba experienced its biggest rainfall event on record, with 1267mm in February and March. This included 274.4mm on 28 February – the highest 24-hour February total on record – and 258.2mm on 1 March for a total of 532mm.

“There has been no event or combination of events since records began that comes close to the rainfall totals recorded at Yamba in February and March,” Clarence Valley Council Director Works and Civil, Jamie Fleeting said at the time.

Getty Images has a collection of photographs which clearly demonstrate the growing dissonance between what is written by government agencies about flood behaviour and the lived experience of the Yamba community in March 2022.

YAMBA, AUSTRALIA - MARCH 02: An aerial view of a flooded street and properties in the town of Yamba, in northern New South Wales, on March 1-2, 2022 in Yamba, Australia.

(Photo by Elise Hassey/Getty Images)

Note: Hover mouse over upper righthand corner of images to reveal "Share" and "Full Screen" buttons.

Embed from Getty Images Embed from Getty ImagesEmbed from Getty Images Embed from Getty Images Embed from Getty Images Embed from Getty Images Embed from Getty Images Embed from Getty Images Embed from Getty Images Embed from Getty Images Embed from Getty Images Embed from Getty Images

Yamba's only flood evacuation route in early March 2022.... pic.twitter.com/9FLn2VY1A7

— no_filter_Yamba (@no_filter_Yamba) September 13, 2022

BACKGROUND

Australian Bureau of Meteorology, Special Climate Statement 76 – Extreme rainfall and flooding in south-eastern Queensland and eastern New South Wales, 25 May 2022, excerpt:

Summary

Extreme multi-day rainfall and significant flooding affected south-eastern Queensland and eastern New South Wales from 22 February to 9 March 2022. The heavy rainfall began in south-east Queensland and north-east New South Wales during the last week of February, and continued further south into eastern New South Wales in March (Figure 1).

Multi-day rainfall records were broken across south-eastern Queensland and north-east New South Wales, with multiple sites recording over 1 metre of rainfall (Figure 2). For the last week of February, rainfalls across parts of the region were at least 2.5 times the February average (based on the 1961–1990 period), with some parts more than 5 times the average. For north-east New South Wales and large areas of south-eastern Queensland, this was the wettest week since at least 1900. The intense and sustained rainfall across the region led to flash flooding and riverine flooding extending from Maryborough in Queensland to Grafton in New South Wales. Some areas of south-eastern Queensland, such as the Mary River at Gympie, recorded their highest flood peaks since 1893.

Widespread major riverine flooding also occurred in the Sunshine Coast region, and in the Brisbane, Logan and Albert River catchments. In parts of north-east New South Wales, peak flood levels broke previous observed records (reliable since at least 1974 and for some locations dating back more than 100 years) by considerable margins. Devastating flooding occurred through Lismore (Wilsons River) and other nearby towns, including Coraki and Woodburn (Richmond River) and Murwillumbah and Tumbulgum (Tweed River).

In the first week of March, the rainfall system shifted south along the New South Wales coast, bringing further heavy rainfall to eastern parts of the state (Figure 3). As a result, the Hawkesbury-Nepean catchment recorded its wettest 9-day period on record (since 1900) to 9 March (Table 11). With rain falling on already saturated soils and swollen rivers, flood levels in the Hawkesbury-Nepean river system exceeded those reached in March 2021 and were comparable to those of 1978 (Table 12).

*

So Premier Perrottet, it's perfectly acceptable to drown a small coastal town in the name of of so-called progress?

This is a story about a small coastal town in New South Wales that is in the second stage of drowning.

It realised it was caught in a strong tide decades ago, started to tread water while looking about to see how far it was to the safety of a solid 'in good faith' urban planning riverbank, found it was in trouble and raised a hand high in the air hoping someone would notice its growing distress.

All that happened was that that successive federal, state and local governments waved at it from the shore and turned away to continue their discussions with property speculators and developers.

 

Click on images to enlarge

For decades this town has been told by federal and state governments that it needed to expand to grow their respective economies. Local government has said it needs to contribute to the local economy (and by implication grow Council's rate base) as well as the regional economy. 

Time and again developers have told the town that clear felling more and more land, as well as draining the marshes, natural flood ways and flood storage land then covering these areas with landfill, will benefit local communities by increasing the supply of housing in the town - that they are in fact 'good neighbours' to have in the community. If the community pushed back these same developers more often than not quickly fell back on their 'rights' as owners of portions of the hundreds of hectares in question and, not infrequently pointed to barely activated development consents they had hoarded as nest eggs until a more favourable political or economic climate developed.

And because all three tiers of government frequently talk in terms of legal ownership of land and its cash value as rateable land, regardless of its aesthetic, environmental, cultural and social value to the community, towns like Yamba at the mouth of the Clarence River often get sucked into responding in terms of the degree to which overdevelopment within long established urban precincts impacts on property ie., loss, damage and/or reduced amenity. 

It's understandable. Like many other coastal towns, a good many Yamba residents are home and/or business property owners themselves.

However, this conversation needs to be firmly turned away from an almost bloodless actuarial view of potential property losses and a new thread has to enter the argument - risk to the life, health and wellbeing of the town population on a individual and collective level.

Because is not just property or lifestyle that will be affected as the climate change risks increase.  

Therefore, all three tiers of government as well as property developers and those contracted to assist the progress of their development applications, need to be forced to face the potential for loss of life, injury and chronic illness if they proceed with political agendas and commercial aspirations on a 'business as usual basis'. 

Yamba, along with the entire east coast of Australia, is facing a rising level of risk because: 

Australia's climate is now on average 1.44°C(± 0.24°C) hotter than it was in 1910 with 1.0°C of this rise occurring since 1960; 

the surface waters of the ocean which forms the eastern border of the town are becoming warmer; 

the East Australia Current has increased in speed moving further down the NSW coast; 

wave patterns have changed and waves breaking on local beaches and estuary soft shorelines are more erosive;

sea-level rise has commenced;

season of the year patterns are changing; 

adverse weather events are becoming a fact of life;

and Yamba can no longer boast that it has one of the best climate systems in the world. 

Floods now move through the Lower Clarence River estuary on average once every three years with some intervals between floods being much shorter than that and, out of control bushfires driven by high winds have proven that the town is not immune to the threat of fire. East-Coast Lows batter the town during adverse weather events.

During such events - especially flood events - Yamba can be cut off from the wider Clarence Valley for days to weeks and experience disruptions to its food and medicine supply chains.

To date there is not one piece of state legislation, regulation or instrument which guarantees that ALL these risks are taken into consideration whenever a development application is lodged and progressed to the point of denial or consent.

Every battle against inappropriate development in coastal towns like Yamba has to be fought on a case by case basis and, again like Yamba, fought in towns whose topographies are being reshaped time and time again with no overarching understanding on the part of decisionmakers of potential consequences of their actions. 

When Yamba asks local government about safety in times of natural disaster it holds aloft a leaflet with a cry of "Nothing to worry about!" or words to that effect. Then tells residents that they should either 'self evacuate' (leave town ahead of its one road to the outside world being cut), 'shelter in place' (stay at home), go to stay with unspecified family or friends on the only high ground in the town - Pilot Hill with its mix of approx. 200 private and holiday rental dwellings clustered either side of three streets. Alternatively residents are told they could make their way to the ‘evacuation centre’, a low-lying local bowling club where an unspecified person/s will record their details but seemingly do little else.

So knowing that Yamba is vulnerable to almost the full suite of climate change risks - risks being exacerbated right now by inappropriate large scale development consents - who in this small town surrounded on all sides by bodies of water might be the most vulnerable?

How does Yamba bring this range of personal vulnerability to the notice of those overly complacent federal, state and local government decision makers?

A Brief Outline of Demographic Characteristics Which Potentially Indicate Vulnerable Persons within the town boundaries of Yamba, NSW, during an Adverse Weather Event caused by Bushfire or Riverine Flooding which may be intensified by Ocean Storm Surge or Stormwater Inundation.

Based on data collected by Australian Bureau of Statistics on CENSUS NIGHT, 10 August 2021, spatial information from id.com.au and Yamba Floodplain Risk Management Study 2008.

Yamba township is approx. 16.92 sq. kilometres in area with a current population density of 376.9 persons per sq. kilometre.

At all times there is one road acting as access and egress for the Yamba resident population and it is a designated evacuation route in times of bushfire or flood. This road along its length is at its lowest point 1.4mAHD and highest point 2mAHD. Note: Australian Height Datum (AHD) expressed as mAHD indicates height in metres above mean sea level. 

There are recognised difficulties to safe evacuation in and from Yamba in times of Lower Clarence River flooding:

“These are likely to be high on account of:

• the distance to high ground,

• Yamba Road will be cut early making access difficult,

• the roads will quickly be inundated by up to 1 m depth or

greater,

• the emergency services (SES, Police) will be “stretched”

answering calls throughout the area.”

[Webb, McKeown & Associates, October 2008]

Three significant flood ways taking water from the southern sections of the town to the Clarence River are now either partially built upon, impeded by poorly designed infrastructure or in the process of being blocked by hectares of new land fill.

There are within Yamba:

• est. 2,747 occupied residential dwellings housing 6,405 men, women & children;

• est. 875 lone person households in Yamba & another 1,191 two-person family households;

• est. 273 lone parent households;

• at least 136 residential dwellings with no car;

• est. 625 households without an internet connection at the dwelling. Note: Based on 2016 Census data as this question was not asked in Census 2021.

• est. 758 private dwellings being rented, excluding holiday rentals;

• est. 49 social housing properties being rented – 17 freestanding houses, 32 townhouses/duplex units;

• On the basis of vulnerable age groupings:

(i) 830 children aged between 0-14 years of age

(ii) 2,414 adults aged between 65-100+ years of age;

• On the basis of self-reported chronic health conditions:

2,482 persons with between 1 and 3 or more chronic conditions, including

(i) est. 71 children between 0-14 years of age with one or two health conditions

(ii) est. 200 adults aged between 65-85+ years of age with between one and three or more chronic health conditions:

Note: the range of long-term health conditions include but are not restricted to arthritis, asthma, cancer, dementia, diabetes, heart disease, kidney disease, lung conditions, stroke and mental health.

• On basis of possible inability to finance their own self-evacuation:

402 households with weekly family incomes of $0-$499 dollars, including

(i) est. 105 family households

(ii) est. 302 lone person & group households;

• the est. 300-1,000+ visitors staying in the town's hotel, motels, caravan parks, holiday rental accommodation who may be unfamiliar with the topography or road network in Yamba if/when required to seek safe shelter.

A word Premier Perrottet.....

Mr. Perrott, when heavy rainfall and major to extreme flooding events occurred earlier this year in the Northern Rivers region from Clarence Valley to the Qld-NSW border, members of your government - including yourself - called much of what happened "an unprecedented event, an unprecedented situation". 

But that is not really an accurate description is it?

It was a predictable event and a predicted situation.

Time and time again the United Nations has warned Australia that it was going to be the first continent to face the full force of climate change impacts. Successive NSW state governments have been aware of the rising level of risk since the 1990s.

You have been a member of the NSW Division of the Liberal Party since 2002, a member of the NSW Parliament and a member of the NSW Coalition Government since March 2011 and, a minister in that government since April 2014. You were NSW Treasurer for 4 years, 8 months, 6 days and went on to be state premier these last eleven months.

I have never heard anyone suggest that you were someone of limited intelligence. So there is no way you had not noted the increased risk of coastal erosion, bushfire and flood along the 1,973km long and 100km wide NSW mainland coastal zone, particularly in the last two decades. 

However, like many in positions of power before you Mr. Perrottet, you have ignored the situation and refused to face the issue of what that meant in terms of physical protection of the population. Or confronted the need to instigate reforms to land use as well as to planning legislation, regulations and instruments, in order to better reflect the circumstances of a society living in a changing climate.

As premier your electorate is the entire state. It's long past time you started to genuinely represent all those most vulnerable to climate change induced fire, storm and flood in that very large electorate - not just the NSW Liberal Party, foreign investors, big business, land speculators, property developers, political donors and your deeply suspect coalition partner, the NSW Nationals.

BRIEF BACKGROUND 

A handful of not so fun facts for Yamba residents  

Matters that state government, local government and regional planning panels should consider (but more often barely notice in passing) before granting consent for large scale residential developments along the NSW coastal zone.

Take Yamba for instance, bounded by the Clarence River estuary and Pacific Ocean...

Probable Maximum Flood (PMF). The largest flood that could conceivably be expected to occur at a particular location, usually estimated from probable maximum precipitation. The PMF defines the maximum extent of flood prone land, that is, the floodplain.

[NEW SOUTH WALES STATE FLOOD PLAN GLOSSARY , February 2018]

“Evacuation

1. Reliable access for pedestrians or vehicles required during a 100 year flood to a publicly accessible location above the PMF”

[RESIDENTIAL ZONES DEVELOPMENT CONTROL PLAN, effective from 23 Dec 2011 , FLOODPLAIN MANAGEMENT CONTROLS, LOWER CLARENCE RIVER FLOODPLAIN, YAMBA FLOODPLAIN & OTHER FLOODPLAINS]......

Approach to Yamba Bowling Club for most of Yamba population will be blocked by 1-in-100yr Flood at 2.09-2.2m & Extreme Flood at 3.56-3.68m. [https://maps.clarence.nsw.gov.au/intramaps97/]

In both flood types Yamba will be isolated from the wider Clarence Valley by floodwaters for a matter of days or weeks....

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