Engineers Australia

Landslide risk management in National Parks: some case histories

Andrew Hunter, Jon Thompson and Peter Volk


Geotechnical hazards which pose risks to both property and the public, one of which is landsliding, often owing to mountainous and rugged terrain, are common within National Park areas. The Illawarra Escarpment State Conservation Area, managed by the NSW National Parks and Wildlife Service (NPWS) contains a coastal escarpment with a well documented history of landsliding. The escarpment stretches from Stanwell Park in the north to near Kiama in the south. Case histories of a landslide at Mt Keira and of rockfall hazards above the Sublime Point Walking Track, presented herein, have been assessed employing the methods within AGS (2000) and AGS (2007). Both case histories provide an insight into the assessment of landslide risk to NPWS infrastructure and the public together with the measures taken to manage such risks.