The catchment contains many natural assets such as the Oyster Harbour, the Kalgan River, the King River, the Porongurup National Park, the Stirling Range National Park. In total, there are approximately 31 Nature Reserves and 38 listed Heritage Sites within the catchment. These all contribute to the catchment high biodiversity (which is a natural asset in itself) and the catchments ecological health.
The catchment is located within the Southwest Australia Ecoregion, an internationally recognised biodiversity hotspot (Conservation International, 2017). This was the first biodiversity hotspot identified in Australia, with 15 currently registered (Lambers, 2016; Hales, 2014). Learn more about Biodiversity Hotspots here