The Great Barrier Reef Outlook Report 2019 identified the declining quality of water identified the declining quality of water entering the Great Barrier Reef over the last decade as a major threat to the ecosystem. The Reef continues to be exposed to increased levels of sediments, nutrients and pesticides. In particular, there are significant effects in inshore areas close to developed coasts, such as mangrove die-back and increased algae on coral reefs. See the
Great Barrier Reef Marine Park Authority for more information.
The Gladstone Harbour and Port Curtis catchment potentially poses a significant risk to the Great Barrier Reef.