Coastal Flooding Threatens NSW Shores
· food
The Quiet Crisis on Our Shores
Coastal flooding has become a pressing concern in New South Wales, with communities across the state facing the stark reality of rising sea levels and intensifying extreme weather events. Once considered a distant threat, this issue is now gathering momentum, leaving many to question the feasibility of defending our shores.
The experiences of families like Virginia Jones, who were forced to evacuate their home in Bogangar after it was inundated by saltwater, are all too common. Low-lying areas around coastal lagoons, lakes, and estuaries are increasingly vulnerable to flooding, particularly in regions with high population density. The northern beaches, with its 273,000 residents surrounded on three sides by water, is one of the regions with the highest overall coastal risk.
According to the NSW State Disaster Mitigation Plan, up to 85% of the state’s population lives within 50 kilometers of the coastline, making it particularly susceptible to the impacts of sea level rise. By 2060, areas like Port Macquarie-Hastings and Clarence Valley will bear the brunt of this threat. The local government areas with the greatest overall risk include Central Coast, Northern Beaches, and Tweed.
Experts are increasingly challenging the notion that we can defend our entire coastline. Climate economist Russell Wise emphasizes the need for a managed retreat from areas at high risk from sea-level rises. “We’re talking about having to relocate entire communities because we cannot defend our entire coastline,” he warns. The consequences of inaction would be catastrophic: beaches and dunes systems would be lost, coastal ecosystems compromised, and public assets put at risk.
The proposal to build a permanent 90-meter seawall at The Entrance North has sparked controversy, with taxpayers potentially footing the bill for private properties worth millions. This raises questions about the equity and effectiveness of such measures. Research from the University of Sydney and the University of Wollongong suggests that hard coastal cliffs or seawalls can have detrimental effects on beaches below.
The NSW government’s review of the emergency services levy may be a crucial step towards addressing the financial implications of coastal flooding. Former planning minister Rob Stokes has highlighted the need for comprehensive planning to mitigate the impacts of climate change on our coastlines.
As we confront this complex issue, it is clear that the status quo is no longer tenable. We must acknowledge that some areas will inevitably be sacrificed in the name of protecting others. The question now is not whether we can defend our shores, but what kind of future we want to build on our coastlines.
A more nuanced understanding of the interconnectedness of our coastal ecosystems and communities is essential. This requires prioritizing sustainable development, managed retreat, and adaptive planning to ensure that our coasts remain resilient and livable for generations to come. Anything less would be a dereliction of duty towards future generations.
The clock is ticking, and it’s time we started taking the quiet crisis on our shores seriously.
Reader Views
- PMPat M. · home cook
The problem with trying to defend our coastline is that we're throwing good money after bad. We've got people proposing massive seawalls and pumping stations, but what about the long-term cost of relocating homes and businesses? We need to think about the economic viability of these measures, not just their perceived effectiveness. A managed retreat might be a more practical solution, but it's also a difficult one to sell to communities who've built their lives on the coast. Someone needs to crunch some numbers and give us a clear picture of what this is going to cost – both financially and in terms of human displacement.
- CDChef Dani T. · line cook
The discussion about coastal flooding in NSW is stuck on defensive measures, but we're not talking enough about the economic feasibility of these plans. Who's going to foot the bill for a 90-meter seawall at The Entrance North? It's a Band-Aid solution that might protect some properties, but what about the long-term costs of maintaining and replacing infrastructure in vulnerable areas? We need to consider the cost-benefit analysis of managed retreat as a viable option – it may be expensive upfront, but could ultimately save billions by avoiding repeated repairs and losses.
- TKThe Kitchen Desk · editorial
The NSW government's piecemeal approach to coastal flooding mitigation will only lead to a patchwork of band-aids on a sinking ship. While building seawalls and restoring dunes is essential, these measures are a mere drop in the bucket when up against the accelerating tide of sea-level rise. It's time to acknowledge that some communities must be relocated, not just defended, if we're serious about safeguarding our coastlines. The economic costs of inaction will far outweigh those of managed retreat – it's high time for policymakers to face this reality and start planning for the future, not just reacting to the present.