There are approximately 135 threatened plant species found in the Georges River Catchment including the native Rice Flower (Pimelea spicata), a Geebung (Persoonia nutans), White Cynanchum (Cynanchum elegans), and the Sydney Plains Greenhood Orchid (Pterostylis saxicola).
Endangered Ecological Communities
Several Endangered Ecological Communities (EEC's) are found in the Georges River Catchment.
- Castlereagh Swamp Woodland
- Coastal Salt Marsh
- Cumberland Plain Woodland
- Moist Shale Woodland in the Sydney Basin Bioregion
- O’Hares Creek Shale Forest
- Sandstone Transition Forest
- Shale Gravel Transition Forest
- Shale/Sandstone Transition Forest
- Southern Sydney Sheltered Forest
- Swamp Oak Floodplain Forest
- Sydney Coastal River Flat Forest
- Sydney Freshwater Wetlands
- Sydney Turpentine–Ironbark Forest
Within NSW there are two pieces of legislation governing the listing of species' as endangered. The Commonwealth Environment Protection and Biodiversity Conservation Act 1999 and the NSW Biodiversity Conservation Act 2016. Additionally, the NSW Fisheries Act 1994 provides for the protection of aquatic habitats which includes Mangroves.